Universitas Sumatera Utara

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5 LAMPIRAN Listing Program FormUtama.vb Public Class FormUtama Dim uchome As UcHome Dim ucconnection As UcConnection Dim ucbook As UcBook Dim ucanggota As UcAnggota Dim ucpeminjaman As UcPeminjaman Dim ucpengembalian As UcPengembalian Public smsbackgroundprocess As SMSBackgroundProcess Public Sub New() ' This call is required by the designer. InitializeComponent() ' Add any initialization after the InitializeComponent() call. smsbackgroundprocess = New SMSBackgroundProcess() smsbackgroundprocess.runsmsbackgroundprocess() Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load ucconnection = New UcConnection() ucconnection.dock = DockStyle.Fill ucconnection.location = New Point(0, 0) ucconnection.visible = True panelcontent.controls.add(ucconnection) ucbook = New UcBook() ucbook.dock = DockStyle.Fill ucbook.location = New Point(0, 0) ucbook.visible = True panelcontent.controls.add(ucbook) ucanggota = New UcAnggota() ucanggota.dock = DockStyle.Fill ucanggota.location = New Point(0, 0) ucanggota.visible = True panelcontent.controls.add(ucanggota) ucpeminjaman = New UcPeminjaman() ucpeminjaman.dock = DockStyle.Fill ucpeminjaman.location = New Point(0, 0) ucpeminjaman.visible = True panelcontent.controls.add(ucpeminjaman) ucpengembalian = New UcPengembalian() ucpengembalian.dock = DockStyle.Fill ucpengembalian.location = New Point(0, 0)

6 ucpengembalian.visible = True panelcontent.controls.add(ucpengembalian) RemoveUC() ucconnection.visible = True Private Sub RemoveUC() For Each item As Control In panelcontent.controls If item.gettype().basetype.fullname.equals("system.windows.forms.usercontrol") Then Dim uc As UserControl uc = CType(item, UserControl) uc.visible = False Next Private Sub tsbconnection_click(sender As System.Object, e As System.EventArgs) Handles tsbconnection.click If Not ucconnection.visible Then RemoveUC() ucconnection.visible = True Private Sub tsbhome_click(sender As System.Object, e As System.EventArgs) Handles tsbhome.click If Not uchome.visible Then RemoveUC() uchome.visible = True Private Sub tsbbuku_click(sender As System.Object, e As System.EventArgs) Handles tsbbuku.click If Not ucbook.visible Then RemoveUC() ucbook.visible = True ucbook.loaddata() Private Sub tsbanggota_click(sender As System.Object, e As System.EventArgs) Handles tsbanggota.click If Not ucanggota.visible Then RemoveUC() ucanggota.visible = True ucanggota.loaddata() Private Sub tsbpeminjaman_click(sender As System.Object, e As System.EventArgs) Handles tsbpeminjaman.click If Not ucpeminjaman.visible Then RemoveUC() ucpeminjaman.visible = True ucpeminjaman.loaddata()

7 Private Sub tsbpengembalian_click(sender As System.Object, e As System.EventArgs) Handles tsbpengembalian.click If Not ucpengembalian.visible Then RemoveUC() ucpengembalian.visible = True ucpengembalian.loaddata() Private Sub FormUtama_FormClosed(sender As System.Object, e As System.Windows.Forms.FormClosedEventArgs) Handles MyBase.FormClosed If Not IsNothing(smsBackgroundProcess.port) Then smsbackgroundprocess.closeport() FrmAddAnggota.vb Public Class FrmAddAnggota Dim database As DatabaseEntities Public Sub New() ' This call is required by the designer. InitializeComponent() ' Add any initialization after the InitializeComponent() call. database = New DatabaseEntities() Private Sub btnsave_click(sender As System.Object, e As System.EventArgs) Handles btnsave.click If txtnama.text = "" Then General.ErrorMessage("Nama tidak boleh kosong!") If txtnim.text = "" Then General.ErrorMessage("Nim tidak boleh kosong!") If cmbfakultas.selectedindex < 0 Then General.ErrorMessage("Silahkan pilih Fakultas Anda!") If cmbprodi.selectedindex < 0 Then General.ErrorMessage("Silahkan pilih Program Studi Anda!") If txttmplahir.text = "" Then General.ErrorMessage("Tempat lahir tidak boleh kosong!") If txtnohp.text = "" Then General.ErrorMessage("No hp tidak boleh kosong!")

8 Try Dim prodi As prodi = cmbprodi.selecteditem Dim anggota As anggota = New anggota() anggota.nama = txtnama.text anggota.nim = txtnim.text anggota.id_prodi = prodi.id_prodi anggota.tempat_lahir = txttmplahir.text anggota.tanggal_lahir = dtptanggallahir.value anggota.no_hp = txtnohp.text database.anggota.addobject(anggota) database.savechanges() Me.DialogResult = Windows.Forms.DialogResult.OK Catch ex As Exception General.ErrorMessage(ex.Message) End Try Private Sub btnbatal_click(sender As System.Object, e As System.EventArgs) Handles btnbatal.click Me.DialogResult = Windows.Forms.DialogResult.Cancel Private Sub FrmAddAnggota_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load Dim fakultas = (From f In database.fakultas Select f).tolist() cmbfakultas.datasource = fakultas cmbfakultas.valuemember = "nama" Private Sub cmbfakultas_selectedvaluechanged(sender As System.Object, e As System.EventArgs) Handles cmbfakultas.selectedvaluechanged Dim selectedfakultas As fakultas = cmbfakultas.selecteditem Dim prodi = (From p In database.prodi Where p.id_fakultas = selectedfakultas.id_fakultas Select p).tolist() cmbprodi.datasource = prodi cmbprodi.valuemember = "nama" Private Sub txtnama_textchanged(sender As System.Object, e As System.EventArgs) Handles txtnama.textchanged FrmAddBook.vb Public Class FrmAddBook Dim database As DatabaseEntities

9 Private Sub FrmAddBook_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load database = New DatabaseEntities() Private Sub btnbatal_click(sender As System.Object, e As System.EventArgs) Handles btnbatal.click Me.DialogResult = Windows.Forms.DialogResult.Cancel Private Sub btnsave_click(sender As System.Object, e As System.EventArgs) Handles btnsave.click If txtisbn.text = "" Then General.ErrorMessage("ISBN buku tidak boleh kosong!") If txtcode.text = "" Then General.ErrorMessage("Kode buku tidak boleh kosong!") If txtjudul.text = "" Then General.ErrorMessage("Judul buku tidak boleh kosong!") If txtpengarang.text = "" Then General.ErrorMessage("Pengarang buku tidak boleh kosong!") If txtpenerbit.text = "" Then General.ErrorMessage("Penerbit buku tidak boleh kosong!") Then Dim jumlah As Integer If txtjumlah.text = "" Or Not Integer.TryParse(txtJumlah.Text, jumlah) General.ErrorMessage("Jumlah buku tidak valid!") For i As Integer = 1 To jumlah Dim book As buku = New buku() book.isbn = txtisbn.text book.code = txtcode.text.toupper() & i book.judul_buku = txtjudul.text book.pengarang = txtpengarang.text book.penerbit = txtpenerbit.text book.unit = i book.status = True database.addtobuku(book) Next database.savechanges() Me.DialogResult = Windows.Forms.DialogResult.OK

10 Private Sub txtisbn_textchanged(sender As System.Object, e As System.EventArgs) Handles txtisbn.textchanged FrmAddPeminjaman.vb Public Class FrmAddPeminjaman Dim database As DatabaseEntities Dim book As buku Dim anggota As anggota Public Sub New() ' This call is required by the designer. InitializeComponent() ' Add any initialization after the InitializeComponent() call. database = New DatabaseEntities() Private Sub btnbatal_click(sender As System.Object, e As System.EventArgs) Handles btnbatal.click Me.DialogResult = Windows.Forms.DialogResult.Cancel Private Sub btnsave_click(sender As System.Object, e As System.EventArgs) Handles btnsave.click If IsNothing(book) Then General.ErrorMessage("Silihkan pilih buku yang akan dipinjam!") If IsNothing(anggota) Then General.ErrorMessage("Silahkan pilih anggota yang meminjam buku!") If book.status = False Then General.ErrorMessage("Buku tidak tersedia") Dim peminjaman As peminjaman = New peminjaman() peminjaman.code = txtcode.text peminjaman.tanggal = dtptanggal.value peminjaman.id_anggota = anggota.id_anggota peminjaman.id_buku = book.id_buku peminjaman.no_hp = txtanggotahp.text peminjaman.konfirmasi = False database.peminjaman.addobject(peminjaman) book.status = False database.objectstatemanager.changeobjectstate(book, EntityState.Modified) database.savechanges() Me.DialogResult = Windows.Forms.DialogResult.OK

11 Private Sub FrmAddPeminjaman_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load Dim code As String = "P" & DateTime.Now.ToString("MM") Dim data = (From p In database.peminjaman Where p.code.tolower.startswith(code.tolower) Order By p.code Descending Select p).firstordefault() txtcode.text = code Private Sub pctsearchbuku_click(sender As System.Object, e As System.EventArgs) Handles pctsearchbuku.click Dim frmsearchbook As FrmSearchBook = New FrmSearchBook() Dim result As DialogResult = frmsearchbook.showdialog() If result = Windows.Forms.DialogResult.OK Then book = (From b In database.buku Where b.id_buku = frmsearchbook.book.id_buku Select b).firstordefault() txtbukujudul.text = book.judul_buku txtbukupengarang.text = book.pengarang() txtbukupenerbit.text = book.penerbit txtbukuunit.text = book.unit Private Sub pctsearchanggota_click(sender As System.Object, e As System.EventArgs) Handles pctsearchanggota.click Dim frmsearchanggota As FrmSearchAnggota = New FrmSearchAnggota() Dim result As DialogResult = frmsearchanggota.showdialog() If result = Windows.Forms.DialogResult.OK Then anggota = frmsearchanggota.anggota txtanggotanim.text = anggota.nim txtanggotanama.text = anggota.nama txtanggotafakultas.text = anggota.prodi.fakultas.nama txtanggotaprodi.text = anggota.prodi.nama txtanggotahp.text = anggota.no_hp Private Sub txtcode_textchanged(sender As System.Object, e As System.EventArgs) Handles txtcode.textchanged FrmEditAnggota.vb Public Class FrmEditAnggota Dim database As DatabaseEntities Dim IsEdit As Boolean Public anggota As anggota Public Sub New() ' This call is required by the designer. InitializeComponent()

12 ' Add any initialization after the InitializeComponent() call. database = New DatabaseEntities() IsEdit = False anggota = New anggota() Private Sub FrmEditAnggota_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load Dim fakultas = (From f In database.fakultas Select f).tolist() cmbfakultas.datasource = fakultas cmbfakultas.valuemember = "nama" Dim prodi = (From p In database.prodi Where p.id_fakultas = anggota.prodi.id_fakultas Select p).tolist() cmbprodi.datasource = prodi cmbprodi.valuemember = "nama" txtnama.text = anggota.nama txtnim.text = anggota.nim cmbfakultas.selectedvalue = anggota.prodi.fakultas.nama cmbprodi.selectedvalue = anggota.prodi.nama txttmplahir.text = anggota.tempat_lahir dtptanggallahir.value = anggota.tanggal_lahir txtnohp.text = anggota.no_hp txtnama.enabled = IsEdit txtnim.enabled = IsEdit cmbfakultas.enabled = IsEdit cmbprodi.enabled = IsEdit txttmplahir.enabled = IsEdit dtptanggallahir.enabled = IsEdit txtnohp.enabled = IsEdit btnsave.text = "&Edit" Private Sub btnbatal_click(sender As System.Object, e As System.EventArgs) Handles btnbatal.click Me.DialogResult = Windows.Forms.DialogResult.Cancel Private Sub btnsave_click(sender As System.Object, e As System.EventArgs) Handles btnsave.click If IsEdit Then If txtnama.text = "" Then General.ErrorMessage("Nama tidak boleh kosong!") If txtnim.text = "" Then General.ErrorMessage("Nim tidak boleh kosong!") If cmbfakultas.selectedindex < 0 Then

13 General.ErrorMessage("Silahkan pilih Fakultas Anda!") If cmbprodi.selectedindex < 0 Then General.ErrorMessage("Silahkan pilih Program Studi Anda!") If txttmplahir.text = "" Then General.ErrorMessage("Tempat lahir tidak boleh kosong!") If txtnohp.text = "" Then General.ErrorMessage("No hp tidak boleh kosong!") Dim prodi As prodi = cmbprodi.selecteditem Dim temp As anggota = (From a In database.anggota Where a.id_anggota = anggota.id_anggota Select a).first() temp.nama = txtnama.text temp.nim = txtnim.text temp.id_prodi = prodi.id_prodi temp.tempat_lahir = txttmplahir.text temp.tanggal_lahir = dtptanggallahir.value temp.no_hp = txtnohp.text If IsNothing(temp.EntityKey) Or temp.entitykey.istemporary Then database.anggota.addobject(temp) database.objectstatemanager.changeobjectstate(temp, EntityState.Modified) database.savechanges() Me.DialogResult = Windows.Forms.DialogResult.OK IsEdit = True txtnama.enabled = IsEdit txtnim.enabled = IsEdit cmbfakultas.enabled = IsEdit cmbprodi.enabled = IsEdit txttmplahir.enabled = IsEdit dtptanggallahir.enabled = IsEdit txtnohp.enabled = IsEdit btnsave.text = "&Simpan" Private Sub cmbfakultas_selectedindexchanged(sender As System.Object, e As System.EventArgs) Handles cmbfakultas.selectedindexchanged Dim selectedfakultas As fakultas = cmbfakultas.selecteditem Dim prodi = (From p In database.prodi Where p.id_fakultas = selectedfakultas.id_fakultas Select p).tolist()

14 cmbprodi.datasource = prodi Private Sub txtnama_textchanged(sender As System.Object, e As System.EventArgs) Handles txtnama.textchanged FrmEditBook.vb Public Class FrmEditBook Public book As buku Dim database As DatabaseEntities Public Sub New() ' This call is required by the designer. InitializeComponent() ' Add any initialization after the InitializeComponent() call. book = New buku database = New DatabaseEntities() Private Sub FrmEditBook_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load txtisbn.text = book.isbn txtcode.text = book.code txtjudul.text = book.judul_buku txtpengarang.text = book.pengarang txtpenerbit.text = book.penerbit cmbstatus.selecteditem = IIf(book.status = True, "tersedia", "tidak tersedia") Private Sub btnsave_click(sender As System.Object, e As System.EventArgs) Handles btnsave.click If txtisbn.text = "" Then General.ErrorMessage("ISBN buku tidak boleh kosong!") If txtcode.text = "" Then General.ErrorMessage("Kode buku tidak boleh kosong!") If txtjudul.text = "" Then General.ErrorMessage("Judul buku tidak boleh kosong!") If txtpengarang.text = "" Then General.ErrorMessage("Pengarang buku tidak boleh kosong!") If txtpenerbit.text = "" Then General.ErrorMessage("Penerbit buku tidak boleh kosong!")

15 Dim buku As buku = (From b In database.buku Where b.id_buku = book.id_buku Select b).firstordefault() buku.isbn = txtisbn.text buku.code = txtcode.text.toupper() buku.judul_buku = txtjudul.text buku.pengarang = txtpengarang.text buku.penerbit = txtpenerbit.text buku.status = If(cmbStatus.Text.Equals("tersedia"), True, False) database.savechanges() Me.DialogResult = Windows.Forms.DialogResult.OK Private Sub btnbatal_click(sender As System.Object, e As System.EventArgs) Handles btnbatal.click Me.DialogResult = Windows.Forms.DialogResult.Cancel Private Sub txtisbn_textchanged(sender As System.Object, e As System.EventArgs) Handles txtisbn.textchanged FrmPengembalian.vb ublic Class FrmPengembalian Dim database As DatabaseEntities Dim peminjaman As peminjaman Public Sub New() ' This call is required by the designer. InitializeComponent() ' Add any initialization after the InitializeComponent() call. database = New DatabaseEntities() Private Sub FrmPengembalian_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load Dim listcode = (From p In database.peminjaman Where p.pengembalian.count = 0 Select p).tolist() cmbcode.datasource = listcode cmbcode.valuemember = "code" txttanggalpeminjaman.text = "" txtdenda.text = "" txtbukujudul.text = "" txtbukupengarang.text = "" txtbukupenerbit.text = "" txtbukuunit.text = ""

16 txtanggotanim.text = "" txtanggotanama.text = "" txtanggotafakultas.text = "" txtanggotaprodi.text = "" txtanggotahp.text = "" Private Sub cmbcode_selectedindexchanged(sender As System.Object, e As System.EventArgs) Handles cmbcode.selectedindexchanged If Not IsNothing(peminjaman) Then Dim settingtime As Integer = General.GetSetting("lama_peminjaman") Dim settingdenda As Decimal = General.GetSetting("denda_per_hari") Dim denda As Integer Dim datenow As DateTime = DateTime.Now Dim pdate As DateTime = DateTime.Parse(peminjaman.tanggal.ToString()).AddDays(1) Dim range As Integer = (datenow - pdate).totaldays If (range > settingtime) Then denda = (range - settingtime) * settingdenda denda = 0 txttanggalpeminjaman.text = pdate.toshortdatestring() txtdenda.text = denda txtbukujudul.text = peminjaman.buku.judul_buku txtbukupengarang.text = peminjaman.buku.pengarang txtbukupenerbit.text = peminjaman.buku.penerbit txtbukuunit.text = peminjaman.buku.unit txtanggotanim.text = peminjaman.anggota.nim txtanggotanama.text = peminjaman.anggota.nama txtanggotafakultas.text = peminjaman.anggota.prodi.fakultas.nama txtanggotaprodi.text = peminjaman.anggota.prodi.nama txtanggotahp.text = peminjaman.anggota.no_hp Private Sub btnbatal_click(sender As System.Object, e As System.EventArgs) Handles btnbatal.click Me.DialogResult = Windows.Forms.DialogResult.Cancel Private Sub btnsave_click(sender As System.Object, e As System.EventArgs) Handles btnsave.click If IsNothing(peminjaman) Then General.ErrorMessage("Silahkan pilih code peminjaman!") Dim book = (From b In database.buku Where b.id_buku = peminjaman.id_buku Select b).firstordefault()

17 book.status = True database.savechanges() Me.DialogResult = Windows.Forms.DialogResult.OK Private Sub pctsearchpeminjaman_click(sender As System.Object, e As System.EventArgs) Handles pctsearchpeminjaman.click Dim frmsearchpeminjaman As FrmSearchPeminjaman = New FrmSearchPeminjaman() Dim result As DialogResult = frmsearchpeminjaman.showdialog() If result = Windows.Forms.DialogResult.OK Then peminjaman = (From p In database.peminjaman Where p.id_peminjaman = frmsearchpeminjaman.peminjaman.id_peminjaman Select p).firstordefault() cmbcode.selecteditem = peminjaman FrmSearchAnggota.vb Public Class FrmSearchAnggota Dim database As DatabaseEntities Public anggota As anggota Public Sub New() ' This call is required by the designer. InitializeComponent() ' Add any initialization after the InitializeComponent() call. database = New DatabaseEntities() anggota = New anggota() Private Sub LoadData() Dim search As String = txtcari.text Dim data If search = "" Then data = (From a In database.anggota Select id_anggota = a.id_anggota, nim = a.nim, nama = a.nama, fakultas = a.prodi.fakultas.nama, prodi = a.prodi.nama, tempat_lahir = a.tempat_lahir, tanggal_lahir = a.tanggal_lahir, no_hp = a.no_hp).tolist() data = (From a In database.anggota Where a.nama.tolower().contains(search.tolower()) Select id_anggota = a.id_anggota, nim = a.nim, nama = a.nama, fakultas = a.prodi.fakultas.nama, prodi = a.prodi.nama, tempat_lahir = a.tempat_lahir,

18 tanggal_lahir = a.tanggal_lahir, no_hp = a.no_hp).tolist() datagrid.datasource = data Private Sub btncancel_click(sender As System.Object, e As System.EventArgs) Handles btncancel.click Me.DialogResult = Windows.Forms.DialogResult.Cancel Private Sub BtnCari_Click(sender As System.Object, e As System.EventArgs) Handles BtnCari.Click LoadData() Private Sub FrmSearchAnggota_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load LoadData() Private Sub txtcari_textchanged(sender As System.Object, e As System.EventArgs) Handles txtcari.textchanged FrmSearchBook.vb Public Class FrmSearchBook Dim database As DatabaseEntities Public book As buku Public Sub New() ' This call is required by the designer. InitializeComponent() ' Add any initialization after the InitializeComponent() call. database = New DatabaseEntities() book = New buku() LoadData() Private Sub LoadData() Dim search As String = txtcari.text Dim data If search = "" Then data = (From b In database.buku Select id_buku = b.id_buku, judul_buku = b.judul_buku, pengarang = b.pengarang, penerbit = b.penerbit, unit = b.unit, status = If(b.status = True, "tersedia", "tidak tersedia")).tolist() data = (From b In database.buku Where b.judul_buku.tolower().contains(search.tolower()) Or b.pengarang.tolower().contains(search.tolower()) Select id_buku = b.id_buku,

19 judul_buku = b.judul_buku, pengarang = b.pengarang, penerbit = b.penerbit, unit = b.unit, status = If(b.status = True, "tersedia", "tidak tersedia")).tolist() Private Sub BtnCari_Click(sender As System.Object, e As System.EventArgs) Handles BtnCari.Click LoadData() Private Sub btncancel_click(sender As System.Object, e As System.EventArgs) Handles btncancel.click Me.DialogResult = Windows.Forms.DialogResult.Cancel Private Sub txtcari_textchanged(sender As System.Object, e As System.EventArgs) Handles txtcari.textchanged FrmSearchPeminjaman.vb Public Class FrmSearchPeminjaman Dim database As DatabaseEntities Public peminjaman As peminjaman Public Sub New() ' This call is required by the designer. InitializeComponent() ' Add any initialization after the InitializeComponent() call. database = New DatabaseEntities() peminjaman = New peminjaman() Public Sub LoadData() Dim search As String = txtcari.text Dim data If search = "" Then data = (From p In database.peminjaman Where p.pengembalian.count = 0 Select id_peminjaman = p.id_peminjaman, code = p.code, tanggal = p.tanggal, judul_buku = p.buku.judul_buku, pengarang = p.buku.pengarang, penerbit = p.buku.penerbit, nama = p.anggota.nama, nim = p.anggota.nim).tolist() data = (From p In database.peminjaman Where (p.code.tolower.contains(search.tolower()) Or p.anggota.nama.tolower.contains(search.tolower)) And p.pengembalian.count = 0 Select id_peminjaman = p.id_peminjaman, code = p.code,

20 tanggal = p.tanggal, judul_buku = p.buku.judul_buku, pengarang = p.buku.pengarang, penerbit = p.buku.penerbit, nama = p.anggota.nama, nim = p.anggota.nim).tolist() Private Sub BtnCari_Click(sender As System.Object, e As System.EventArgs) Handles BtnCari.Click LoadData() Private Sub FrmSearchPeminjaman_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load LoadData() Private Sub btncancel_click(sender As System.Object, e As System.EventArgs) Handles btncancel.click Me.DialogResult = Windows.Forms.DialogResult.Cancel Private Sub txtcari_textchanged(sender As System.Object, e As System.EventArgs) Handles txtcari.textchanged FrmSearchPeminjaman.vb Public Class FrmSearchPeminjaman Dim database As DatabaseEntities Public peminjaman As peminjaman Public Sub New() ' This call is required by the designer. InitializeComponent() ' Add any initialization after the InitializeComponent() call. database = New DatabaseEntities() peminjaman = New peminjaman() Public Sub LoadData() Dim search As String = txtcari.text Dim data If search = "" Then data = (From p In database.peminjaman Where p.pengembalian.count = 0 Select id_peminjaman = p.id_peminjaman, code = p.code, tanggal = p.tanggal, judul_buku = p.buku.judul_buku, pengarang = p.buku.pengarang, penerbit = p.buku.penerbit, nama = p.anggota.nama, nim = p.anggota.nim).tolist()

21 data = (From p In database.peminjaman Where (p.code.tolower.contains(search.tolower()) Or p.anggota.nama.tolower.contains(search.tolower)) And p.pengembalian.count = 0 Select id_peminjaman = p.id_peminjaman, code = p.code, tanggal = p.tanggal, judul_buku = p.buku.judul_buku, pengarang = p.buku.pengarang, penerbit = p.buku.penerbit, nama = p.anggota.nama, nim = p.anggota.nim).tolist() Private Sub BtnCari_Click(sender As System.Object, e As System.EventArgs) Handles BtnCari.Click LoadData() Private Sub FrmSearchPeminjaman_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load LoadData() FrmUcAnggota.vb Public Class UcAnggota Dim database As DatabaseEntities Public Sub New() ' This call is required by the designer. InitializeComponent() ' Add any initialization after the InitializeComponent() call. database = New DatabaseEntities() Public Sub LoadData() Dim search As String = txtcari.text Dim data If search = "" Then data = (From a In database.anggota Order By a.nim Ascending Select id_anggota = a.id_anggota, nim = a.nim, nama = a.nama, fakultas = a.prodi.fakultas.nama, prodi = a.prodi.nama, tempat_lahir = a.tempat_lahir, tanggal_lahir = a.tanggal_lahir, no_hp = a.no_hp).tolist() data = (From a In database.anggota Order By a.nim Ascending Where a.nama.tolower().contains(search.tolower()) Or a.nim.tolower().contains(search.tolower()) Select id_anggota = a.id_anggota, nim = a.nim, nama = a.nama,

22 fakultas = a.prodi.fakultas.nama, prodi = a.prodi.nama, tempat_lahir = a.tempat_lahir, tanggal_lahir = a.tanggal_lahir, no_hp = a.no_hp).tolist() datagrid.datasource = data Private Sub UcAnggota_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load LoadData() Private Sub btncari_click(sender As System.Object, e As System.EventArgs) Handles btncari.click LoadData() Private Sub btnadd_click(sender As System.Object, e As System.EventArgs) Handles btnadd.click Dim frmaddanggota As FrmAddAnggota = New FrmAddAnggota() Dim result As DialogResult = frmaddanggota.showdialog() If result = DialogResult.OK Then LoadData() Private Sub datagrid_cellcontentdoubleclick(sender As System.Object, e As System.Windows.Forms.DataGridViewCellEventArgs) Handles datagrid.cellcontentdoubleclick Dim id_anggota As Integer = datagrid.rows(e.rowindex).cells(0).value Dim anggota As anggota = (From a In database.anggota Where a.id_anggota = id_anggota Select a).firstordefault() Dim frmeditanggota As FrmEditAnggota = New FrmEditAnggota() Dim result As DialogResult frmeditanggota.anggota = anggota result = frmeditanggota.showdialog() If result = DialogResult.OK Then LoadData() Private Sub btndelete_click(sender As System.Object, e As System.EventArgs) Handles btndelete.click Dim id As Integer = datagrid.rows(datagrid.selectedcells(0).rowindex).cells(0).value Dim name As String = datagrid.rows(datagrid.selectedcells(0).rowindex).cells(2).value Dim result As DialogResult = MessageBox.Show(String.Format("Apakah Anda ingin menghapus data anggota {0}", name), "Konfirmasi", MessageBoxButtons.YesNo, MessageBoxIcon.Information) If result = DialogResult.Yes Then Dim anggota = (From a In database.anggota Where a.id_anggota = id).firstordefault()

23 database.anggota.deleteobject(anggota) database.savechanges() LoadData() Private Sub txtcari_textchanged(sender As System.Object, e As System.EventArgs) Handles txtcari.textchanged FrmUcBook.vb Public Class UcBook Dim database As DatabaseEntities Private Sub UcBook_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load database = New DatabaseEntities() Public Sub LoadData() Dim search As String = txtcari.text Dim data If search = "" Then data = (From b In database.buku Order By b.judul_buku Ascending Select id_buku = b.id_buku, judul_buku = b.judul_buku, pengarang = b.pengarang, penerbit = b.penerbit, unit = b.unit, isbn = b.isbn, code = b.code, status = If(b.status = True, "tersedia", "tidak tersedia")).tolist() data = (From b In database.buku Order By b.judul_buku Ascending Where b.judul_buku.tolower().contains(search.tolower()) Or b.pengarang.tolower().contains(search.tolower()) Select id_buku = b.id_buku, judul_buku = b.judul_buku, pengarang = b.pengarang, penerbit = b.penerbit, unit = b.unit, isbn = b.isbn, code = b.code, status = If(b.status = True, "tersedia", "tidak tersedia")).tolist() datagrid.datasource = data Private Sub btnadd_click(sender As System.Object, e As System.EventArgs) Handles btnadd.click Dim frmaddbook = New FrmAddBook() Dim result As DialogResult

24 result = frmaddbook.showdialog() If result = DialogResult.OK Then LoadData() Private Sub datagrid_celldoubleclick(sender As System.Object, e As System.Windows.Forms.DataGridViewCellEventArgs) Handles datagrid.celldoubleclick Dim frmedit As FrmEditBook = New FrmEditBook() Dim id_buku As Integer = datagrid.rows(e.rowindex).cells(0).value frmedit.book = (From b In database.buku Where b.id_buku = id_buku Select b).firstordefault() Dim result As DialogResult result = frmedit.showdialog() If result = DialogResult.OK Then LoadData() Private Sub btncari_click(sender As System.Object, e As System.EventArgs) Handles btncari.click LoadData() Private Sub txtcari_textchanged(sender As System.Object, e As System.EventArgs) Handles txtcari.textchanged FrmUcConnection.vb Imports System.IO.Ports Imports System.Management Public Class UcConnection Dim port As SerialPort Dim SMSGateway As SMSLib Dim formutama As FormUtama Public Sub New() ' This call is required by the designer. InitializeComponent() ' Add any initialization after the InitializeComponent() call. SMSGateway = New SMSLib() formutama = New FormUtama() Private Sub UcConnection_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load Try formutama = Me.Parent.Parent Next cmbport.valuemember = "Name"

25 Catch err As ManagementException MessageBox.Show("An error occurred while querying for WMI data: " & err.message) End Try port = formutama.smsbackgroundprocess.port rdbsim.checked = True formutama.smsbackgroundprocess.sim_storage = True Catch ex As Exception General.ErrorLog(ex.Message) End Try Private Sub rdbsim_checkedchanged(sender As System.Object, e As System.EventArgs) Handles rdbsim.checkedchanged formutama.smsbackgroundprocess.sim_storage = True Private Sub rdbdevice_checkedchanged(sender As System.Object, e As System.EventArgs) Handles rdbdevice.checkedchanged formutama.smsbackgroundprocess.sim_storage = False Private Sub btnconnect_click(sender As System.Object, e As System.EventArgs) Handles btnconnect.click Try If btnconnect.text.equals("connect") Then Me.port = formutama.smsbackgroundprocess.smslib.openport(port.port, baundrate, databits, readtimeout, writetimeout) cmbport.text If Not IsNothing(Me.port) Then formutama.statusbar.text = "Status : Connected to " + formutama.statusbar.text = "Status : Invalid port settings" formutama.smsbackgroundprocess.port = Me.port btnconnect.text = "Disconnect" gboportsetting.enabled = False formutama.smsbackgroundprocess.closeport() btnconnect.text = "Connect" gboportsetting.enabled = True Catch ex As Exception formutama.statusbar.text = "Status : " & ex.message End Try Private Sub cmbport_selectedindexchanged(sender As System.Object, e As System.EventArgs) Handles cmbport.selectedindexchanged Public Class PortName Property Name As String Property Port As String

26 FrmUcHome.vb Public Class UcHome Private Sub Label1_Click(sender As System.Object, e As System.EventArgs) Handles Label1.Click FrmUcPeminjaman.vb Public Class UcPeminjaman Dim database As DatabaseEntities Public Sub New() ' This call is required by the designer. InitializeComponent() ' Add any initialization after the InitializeComponent() call. database = New DatabaseEntities() Private Sub UcPeminjaman_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load Public Sub LoadData() Dim search As String = txtcari.text Dim data If search = "" Then data = (From p In database.peminjaman Where p.pengembalian.count = 0 Select id_peminjaman = p.id_peminjaman, code = p.code, tanggal = p.tanggal, judul_buku = p.buku.judul_buku, pengarang = p.buku.pengarang, penerbit = p.buku.penerbit, nama = p.anggota.nama, nim = p.anggota.nim).tolist() data = (From p In database.peminjaman Where p.code.tolower.contains(search.tolower()) Or p.anggota.nama.tolower.contains(search.tolower) And p.pengembalian.count = 0 Select id_peminjaman = p.id_peminjaman, code = p.code, tanggal = p.tanggal, judul_buku = p.buku.judul_buku, pengarang = p.buku.pengarang, penerbit = p.buku.penerbit, nama = p.anggota.nama, nim = p.anggota.nim).tolist() Private Sub btncari_click(sender As System.Object, e As System.EventArgs) Handles btncari.click

27 LoadData() Private Sub btnadd_click(sender As System.Object, e As System.EventArgs) Handles btnadd.click Dim frmaddpeminjaman As FrmAddPeminjaman = New FrmAddPeminjaman() Dim result As DialogResult = frmaddpeminjaman.showdialog() If result = DialogResult.OK Then LoadData() Private Sub txtcari_textchanged(sender As System.Object, e As System.EventArgs) Handles txtcari.textchanged FrmUcPengembalian.vb Public Class UcPengembalian Dim database As DatabaseEntities Public Sub New() ' This call is required by the designer. InitializeComponent() ' Add any initialization after the InitializeComponent() call. database = New DatabaseEntities() Public Sub LoadData() Dim search As String = txtcari.text Dim data If search = "" Then data = (From p In database.pengembalian Select id_pengembalian = p.id_pengembalian, code = p.peminjaman.code, tanggal_peminjaman = p.peminjaman.tanggal, tanggal_pengembalian = p.tanggal, judul_buku = p.peminjaman.buku.judul_buku, pengarang = p.peminjaman.buku.pengarang, penerbit = p.peminjaman.buku.penerbit, nama = p.peminjaman.anggota.nama, nim = p.peminjaman.anggota.nim, denda = p.denda).tolist() data = (From p In database.pengembalian Where p.peminjaman.code.tolower.contains(search.tolower()) Or p.peminjaman.anggota.nama.tolower.contains(search.tolower) Select id_pengembalian = p.id_pengembalian, code = p.peminjaman.code, tanggal_peminjaman = p.peminjaman.tanggal, tanggal_pengembalian = p.tanggal, judul_buku = p.peminjaman.buku.judul_buku, pengarang = p.peminjaman.buku.pengarang, penerbit = p.peminjaman.buku.penerbit, nama = p.peminjaman.anggota.nama,

28 nim = p.peminjaman.anggota.nim, denda = p.denda).tolist() Private Sub btnadd_click(sender As System.Object, e As System.EventArgs) Handles btnadd.click Dim frmpengembalian As FrmPengembalian = New FrmPengembalian() Dim result As DialogResult = frmpengembalian.showdialog() If result = DialogResult.OK Then LoadData() Private Sub txtcari_textchanged(sender As System.Object, e As System.EventArgs) Handles txtcari.textchanged ShortMessage.vb Public Class ShortMessage Public Property Index As Integer Public Property Status As String Public Property Sender As String Public Property Alphabet As String Public Property Sent As String Public Property Message As String SMSBackgroundProcess.vb Imports System.IO.Ports Imports System.Text.RegularExpressions Imports System.Threading Public Class SMSBackgroundProcess Public port As SerialPort Public smslib As ATLib.SMSLib Public SIM_STORAGE As Boolean Dim database As DatabaseEntities Public Sub New() smslib = New ATLib.SMSLib() SIM_STORAGE = True database = New DatabaseEntities() Public Sub ClosePort() smslib.closeport(me.port) Public Function SendMultiPageSMS(sender As String, message As String) While message.length > 160 Dim part As String = message.substring(0, 160) message = message.substring(160) If Not smslib.sendmessage(me.port, sender, part) Then

29 False End While smslib.sendmessage(me.port, sender, message) End Function Public Sub RunSMSBackgroundProcess() Dim bgprocess = New Thread(New ThreadStart(AddressOf SMSGateway)) bgprocess.isbackground = True bgprocess.start() Public Sub SMSGateway() While True ConfirmationProcess() ReadSMS() Thread.Sleep(3000) End While Private Sub ConfirmationProcess() 'While True Try If Not IsNothing(Me.port) Then 'mengirim sms konfirmasi telah melakukan peminjaman buku smslib.log_file = "ConfirmationProcess_" General.LogActivity(smsLib.log_file, "Start Confirmation Process") Dim listpeminjaman As List(Of peminjaman) = (From p In database.peminjaman Where p.konfirmasi = False Select p).tolist() General.LogActivity(smsLib.log_file, String.Format("{0} data peminjaman ditemukan", listpeminjaman.count)) For Each item In listpeminjaman General.LogActivity(smsLib.log_file, String.Format("Receiver : {0}, NIM : {1}, No : {2}, Code Pemesanan : {3}", item.anggota.nama, item.anggota.nim, item.no_hp, item.code)) Dim tanggaltenggang As DateTime = DateTime.Parse(item.tanggal.ToString).AddDays(General.GetSetting("lama_peminjam an")) Dim message As String = String.Format("Terima kasih telah melakukan peminjaman. Kode peminjaman Anda {0}. Tenggang waktu peminjaman {1}", item.code, tanggaltenggang.toshortdatestring()) If smslib.sendmessage(me.port, item.no_hp, message) Then item.konfirmasi = True database.savechanges() General.LogActivity(smsLib.log_file, "Success") General.LogActivity(smsLib.log_file, "Failed") Next General.LogActivity(smsLib.log_file, "=================================") 'mengirimkan sms peringatan tenggang waktu

30 smslib.log_file = "RemainderProcess_" General.LogActivity(smsLib.log_file, "Start Reminder Process") listpeminjaman = (From p In database.peminjaman Where p.konfirmasi = True And p.pengembalian.count = 0 And p.denda = False Select p).tolist() General.LogActivity(smsLib.log_file, String.Format("{0} data peminjaman", listpeminjaman.count)) For Each item In listpeminjaman If Not (item.sent_date = DateTime.Now.Date) Or IsNothing(item.sent_date) Then General.LogActivity(smsLib.log_file, String.Format("code {0}, tanggal {1}", item.code, item.tanggal.tostring())) Dim currentdate As DateTime = DateTime.Now Dim settingtime As Integer = General.GetSetting("lama_peminjaman") Dim pdate As DateTime = DateTime.Parse(item.tanggal.ToString()).AddDays(1) Dim range As Integer = (currentdate - pdate).totaldays 'pengecekan waktu tenggang -1 If (settingtime - range) = 1 Then General.LogActivity(smsLib.log_file, String.Format("Receiver : {0}, NIM : {1}, No : {2}, Code Pemesanan : {3}", item.anggota.nama, item.anggota.nim, item.no_hp, item.code)) Dim message As String = String.Format("Masa peminjaman Anda dengan kode {0}," & "judul {1}, akan berakhir pada tanggal {2}. " & "Silahkan lakukan pengembalian buku.", item.code, item.buku.judul_buku, pdate.adddays(settingtime - 1).ToShortDateString()) If SendMultiPageSMS(item.no_hp, message) Then item.sent_date = Date.Now database.savechanges() General.LogActivity(smsLib.log_file, "Success") General.LogActivity(smsLib.log_file, "Failed") 'pengecekan waktu tenggang pada hari ini If (range - settingtime) = 0 Then General.LogActivity(smsLib.log_file, String.Format("Receiver : {0}, NIM : {1}, No : {2}, Code Pemesanan : {3}", item.anggota.nama, item.anggota.nim, item.no_hp, item.code)) Dim message As String = String.Format("Masa peminjaman Anda dengan kode {0}," & "judul {1}, akan berakhir pada hari ini {2}. " & "Silahkan lakukan pengembalian buku.", item.code, item.buku.judul_buku, currentdate.toshortdatestring())

31 If SendMultiPageSMS(item.no_hp, message) Then item.sent_date = Date.Now database.savechanges() General.LogActivity(smsLib.log_file, "Success") General.LogActivity(smsLib.log_file, "Failed") 'pengecekan waktu tenggang telah habis dan dikenakan denda If (range - settingtime) > 0 Then Dim settingdenda As Decimal = General.GetSetting("denda_per_hari") Dim denda As Integer = (range - settingtime) * settingdenda {2}, Code Pemesanan : {3}", item.anggota.nim, item.no_hp, item.code)) General.LogActivity(smsLib.log_file, String.Format("Receiver : {0}, NIM : {1}, No : item.anggota.nama, Dim message As String = String.Format("Masa peminjaman Anda dengan kode {0}," & "judul {1}, telah berakhir pada tanggal {2}, dengan denda {3}. " & "Silahkan lakukan pengembalian buku.", item.code, item.buku.judul_buku, pdate.adddays(settingtime - 1).ToShortDateString(), denda) If SendMultiPageSMS(item.no_hp, message) Then item.sent_date = Date.Now item.denda = True database.savechanges() General.LogActivity(smsLib.log_file, "Success") General.LogActivity(smsLib.log_file, "Failed") database.refresh(objects.refreshmode.clientwins, item) Next General.LogActivity(smsLib.log_file, "=================================") Catch ex As Exception General.ErrorLog(ex.Message) End Try 'Thread.Sleep(2000) 'End While Private Sub ReadSMS() 'While True Dim messages As List(Of ATLib.ShortMessage) = Nothing Try If Not IsNothing(Me.port) Then smslib.log_file = "ReadSMS_"

32 General.LogActivity(smsLib.log_file, "Start Read SMS Process") Dim input As String = smslib.readsms(port, SIM_STORAGE) messages = ParseMessages(input) General.LogActivity(smsLib.log_file, String.Format("Diterima {0} sms.", messages.count)) If messages.count > 0 Then For Each msg In messages Dim cmd As Integer = 0 If ValidateSMS(msg, cmd) Then If cmd = CMD_DENDA Then General.LogActivity(smsLib.log_file, "REQUEST DENDA") Console.WriteLine("DENDA") Dim pesan As String() = msg.message.split(new Char() {" "c}) message : {1}", msg.message)) General.LogActivity(smsLib.log_file, String.Format("Sender : {0}, If pesan.length = 2 Then Dim code As String = pesan(1) msg.sender, database.peminjaman p.code.tolower().equals(code.tolower()) p).firstordefault() Dim peminjaman As peminjaman = (From p In Where Select If Not IsNothing(peminjaman) Then If peminjaman.pengembalian.count <= 0 Then Dim currentdate As DateTime = DateTime.Now Dim settingtime As Integer = General.GetSetting("lama_peminjaman") Dim pdate As DateTime = DateTime.Parse(peminjaman.tanggal.ToString()).AddDays(1) Dim range As Integer = (currentdate - pdate).totaldays General.LogActivity(smsLib.log_file, Tanggal : {1}", String.Format("Code : {0}, peminjaman.code, peminjaman.tanggal)) General.GetSetting("denda_per_hari") settingtime) * settingdenda If (range - settingtime) > 0 Then Dim settingdenda As Decimal = Dim denda As Integer = (range - Dim message As String = String.Format("Denda Anda untuk peminjaman {0} sebesar Rp. {1}", peminjaman.code, denda) General.LogActivity(smsLib.log_file,

33 {0}", message)) msg.sender, message) Then General.LogActivity(smsLib.log_file, "Success") String.Format("Message : If smslib.sendmessage(me.port, General.LogActivity(smsLib.log_file, "Failed") Dim message As String = String.Format("Peminjaman Anda belum melewati tenggang waktu. " & "Batas akhir pengembalian {0}", pdate.adddays(settingtime).toshortdatestring()) General.LogActivity(smsLib.log_file, {0}", message)) msg.sender, message) Then General.LogActivity(smsLib.log_file, "Success") String.Format("Message : If smslib.sendmessage(me.port, General.LogActivity(smsLib.log_file, "Failed") General.LogActivity(smsLib.log_file, String.Format("Kode {0} sudah di kembalikan", code)) smslib.sendmessage(port, msg.sender, "Pengembalian sudah dilakukan") General.LogActivity(smsLib.log_file, String.Format("Kode {0} tidak ditemukan", code)) smslib.sendmessage(port, msg.sender, "Code peminjaman tidak ditemukan") General.LogActivity(smsLib.log_file, String.Format("Format tidak benar. {0}", msg.message)) smslib.sendmessage(port, msg.sender, "Format SMS Anda salah. Format yang benar DENDA<spasi>KODE") Next General.LogActivity(smsLib.log_file, "=================================") Catch ex As Exception General.ErrorLog(ex.Message) End Try 'Thread.Sleep(2000) 'End While

34 Private Function ValidateSMS(message As ATLib.ShortMessage, ByRef cmdtype As Integer) Dim check As Boolean = False Dim pesan As String() = message.message.split(new Char() {" "c}) Dim cmd As String = pesan(0).toupper() If (cmd = "DENDA") Then check = True cmdtype = CMD_DENDA check End Function SMSLib.vb Imports System.IO.Ports Imports System.Threading Imports System.Text Public Class SMSLib Public receivenow As AutoResetEvent Public log_file As String Shared readnow As AutoResetEvent = New AutoResetEvent(False) Public Sub New() Me.log_file = "SMSLib_" Public Function OpenPort(portName As String, baudrate As Integer, databits As Integer, readtimeout As Integer, writetimeout As Integer) receivenow = New AutoResetEvent(True) Dim port As System.IO.Ports.SerialPort = New SerialPort() Try port.portname = portname port.baudrate = baudrate port.databits = databits port.readtimeout = readtimeout port.writetimeout = writetimeout port.stopbits = StopBits.One port.parity = Parity.None port.encoding = Encoding.GetEncoding("iso ") AddHandler port.datareceived, AddressOf port_datareceived port.open() port.dtrenable = True port.rtsenable = True Catch ex As Exception General.ErrorMessage(ex.Message) Throw ex End Try port End Function Public Sub port_datareceived(sender As Object, e As SerialDataReceivedEventArgs)

35 Try If e.eventtype = SerialData.Chars Then receivenow.set() Catch ex As Exception Throw ex End Try Public Function ReadResponse(port As SerialPort, timeout As Integer) Dim buffer As String = String.Empty Try Do If receivenow.waitone(timeout, False) Then Dim t As String = port.readexisting() buffer &= t If buffer.length > 0 Then Throw New ApplicationException("Response received is incomplete.") Throw New ApplicationException("No data received from phone.") Loop While (Not buffer.endswith("\r\nok\r\n") And Not buffer.endswith("\r\n> ") And Not buffer.endswith("\r\nerror\r\n")) Catch ex As Exception Throw ex End Try buffer End Function Public Function ExecCommand(port As SerialPort, command As String, responsetimeout As Integer, errormessage As String) Try port.discardoutbuffer() port.discardinbuffer() receivenow.reset() port.write(command & "\r") Dim input As String = ReadResponse(port, responsetimeout) If ((input.length = 0) Or Not (input.endswith("\r\nok\r\n") Or input.endswith("\r\n> "))) Then Throw New ApplicationException("No success message was received.") input Catch ex As Exception Throw New ApplicationException(errorMessage, ex) End Try End Function Public Function SendMessage(port As SerialPort, PhoneNo As String, Message As String) Dim issend As Boolean = False Try General.LogActivity(Me.log_file, String.Format("Sending message")) Dim recieveddata As String = ExecCommand(port, "AT", 1000, "No phone connected")

36 recieveddata = ExecCommand(port, "AT+CMGF=1", 1000, "Failed to set message format.") Dim command As String = "AT+CMGS=\"" + PhoneNo + " \ "" recieveddata = ExecCommand(port, command, 1000, "Failed to accept phoneno") command = Message & Char.ConvertFromUtf32(26) & "\r" recieveddata = ExecCommand(port, command, 20000, "Failed to send message") If recieveddata.endswith("\r\nok\r\n") Then issend = True If recieveddata.contains("error") Then issend = False General.LogActivity(Me.log_file, String.Format("{0} {1} {2}", PhoneNo, Message, issend)) issend Catch ex As Exception General.LogActivity(Me.log_file, String.Format("{0} {1} {2} {3}", PhoneNo, Message, issend, ex.message)) Throw ex End Try End Function Public Function ReadSMS(port As SerialPort, sim_storage As Boolean) Try General.LogActivity(Me.log_file, "Read SMS") 'Check connection ExecCommand(port, "AT", 1000, "No phone connected") 'Use message format "Text mode" ExecCommand(port, "AT+CMGF=1", 1000, "Failed to set message format.") If sim_storage Then ExecCommand(port, "AT+CPMS=""SM""", 1000, "Failed to select message storage") ExecCommand(port, "AT+CPMS=""ME""", 1000, "Failed to select message storage") 'Read the messages Dim input As String = ExecCommand(port, "AT+CMGL=""REC UNREAD""", 5000, "Failed to read the messages.") input Catch ex As Exception General.LogActivity(Me.log_file, ex.message) Nothing End Try End Function Public Sub ClosePort(ByRef port As SerialPort) Try port.close() RemoveHandler port.datareceived, AddressOf port_datareceived port = Nothing Catch ex As Exception Throw ex End Try