DATAGRIDVIEW
DataGridView adalah sebuah kontrol di VB .net yang digunakan untuk menampilkan data dalam bentuk grid. Control ini dapat dikoneksikan dengan berbagai jenis database, dan menampilkan isi dari tabel atau query melalui perintah SQL.
Menampilkan Data dari database Ke Datagridview
Langkah-langkahnya sebagai berikut : Pilih Datagridview pada toolbox
Pilih New Connection
Pilih server name sesuai dengan nama servernya. Pilih nama database yang akan dikoneksikan. Kemudian klik Test Connection untuk memastikan koneksi sudah berhasil.
Membuat Data Grid View Sebagai Lembar Kerja
Menghitung Total pada GridView dengan LINQLINQ ( Language Integrated Query ) adalah sebuah Query yang terintegrasi dengan IDE Visual Studio, sehingga para programmer mempunyai opsi lain untuk melakukan sebuah query tanpa harus membuat command sql dalam bentuk string.
Banyak jenis LINQ yang dapat dipakai, LINQ to SQL, LINQ to XML, LINQ to Dataset dan lain – lain. Salah satu kegunaan LINQ yang sering sekali dipakai adalah untuk melakukan penjumlahan pada GridView, biasanya ini sering digunakan pada aplikasi seperti POS dan aplikasi sejenis.
Fungsi untuk menjumlahkan grid dengan looping pada tombol total : Dim Total AsDouble = 0
ForEach row As DataGridViewRow In DataGridView1.Rows 'Index no 1 kolom jumlah
Total += Convert.ToDouble(row.Cells(1).Value) Next
txtTotal.Text = Total
Atau, bandingkan apabila kita memakai LINQ….
Dim Total = Aggregate row As DataGridViewRow In DataGridView1.Rows _ Into Sum(Convert.ToDouble(row.Cells(1).Value))
txtTotal.Text = Total
Memasukan Data Dari DataGridView Ke Database
Buat database terlebih dahulu, misalnya kita ambil database DataMhs dengan tabel mhs. Kemudian buat form dibawah ini.
Data sebelum diubah :
Data sesudah diubah :
Masukan coding ke form dibawah ini :
Imports System.Data.SqlClient Imports System.Data
Public Class Form1
Dim sCommand As SqlCommand Dim sAdapter As SqlDataAdapter Dim sBuilder As SqlCommandBuilder Dim sDs As DataSet
Dim sTable As DataTable
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim connectionString As String = "Data Source=(LOCAL); Initial Catalog=DataMhs; Integrated Security=True"
Using connection As New SqlConnection(connectionString)
Dim cmdText As String = "INSERT INTO mhs (nim, nama, jenis_kelamin) VALUES (@Column1, @Column2, @Column3)"
Dim command As New SqlCommand(cmdText, connection)
command.Parameters.Add(New SqlParameter("@Column1", SqlDbType.VarChar)) command.Parameters.Add(New SqlParameter("@Column2", SqlDbType.VarChar)) command.Parameters.Add(New SqlParameter("@Column3", SqlDbType.VarChar)) connection.Open()
Dim transaction As SqlTransaction = connection.BeginTransaction() command.Transaction = transaction
Try
For i As Integer = 0 To DataGridView1.Rows.Count - 2 command.Parameters("@Column1").Value = DataGridView1.Rows(i).Cells(0).FormattedValue command.Parameters("@Column2").Value = DataGridView1.Rows(i).Cells(1).FormattedValue command.Parameters("@Column3").Value = DataGridView1.Rows(i).Cells(2).FormattedValue command.ExecuteNonQuery() Next i transaction.Commit()
MessageBox.Show("Data Berhasil Disimpan") Catch ex As Exception
Try
transaction.Rollback()
Catch rollBackEx As Exception
MessageBox.Show(rollBackEx.Message) End Try End Try End Using End Sub End Class
Pencarian Kata Dengan Textbox Di Datagridview
Pencarian dimana user mengetikan kata dalam sebuah textbox, sementara kursor didatagrid akan mencari kata yang sama sesuai dengan kata dalam textbox.
proses pencarian gambar diatas adalah pencarian Nomor Akun. ketika kita mengetikan nim yang kita inginkan, kursor yang berwarna biru di dalam grid akan menunjukkannya. Listing Programnya adalah sebagai berikut :
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.MhsTableAdapter.Fill(Me.DataMhsDataSet.mhs) End Sub
Private Sub txtFind_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtFind.TextChanged
Dim xloop1 As Integer Dim sPola As String Dim sbuka As String Dim SBetul As Boolean sPola = txtFind.Text + "*"
For xloop1 = 1 To Gridme.RowCount - 1
sbuka = Gridme.Rows(xloop1 - 1).Cells(0).Value SBetul = UCase(sbuka) Like UCase(sPola)
If SBetul = True Then
Gridme.CurrentCell = Gridme.Item(0, xloop1 - 1) Exit Sub
End If Next End Sub End Class
LIST VIEW
ListView dalam Visual Basic biasanya digunakan untuk menampilkan data, baik dari database maupun bukan, ke dalam tabel dalam bentuk list atau grid. Dengan listview, data yang ada dapat diurutkan, ditambahkan maupun dihapus dengan mudah dari list.
Menambah, Mengedit dan Menghapus Isi List View
Jawaban :
Public Class FrmListView Dim Baris As Integer = 0 Dim BarisEdit As Integer = 0
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Mengatur ListView
ListView1.View = View.Details ListView1.FullRowSelect = True ListView1.GridLines = True
ListView1.Columns.Add("Nama Lengkap", 150) ListView1.Columns.Add("Alamat", 200) End Sub
Button Tambah
Private Sub BtnTambah_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnTambah.Click
ListView1.Items.Add(TextBox1.Text)
ListView1.Items(Baris).SubItems.Add(TextBox2.Text) Baris += 1
Button Edit
Private Sub BtnEdit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnEdit.Click ListView1.Items(BarisEdit).Text = TextBox1.Text ListView1.Items(BarisEdit).SubItems(1).Text = TextBox2.Text End Sub
ListView
Private Sub ListView1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListView1.SelectedIndexChanged
BarisEdit = ListView1.FocusedItem.Index End Sub
Button Hapus
Private Sub BtnHapus_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnHapus.Click
ListView1.Items(BarisEdit).Remove() End Sub
End Class
Tugas Prktikum!
Dibawah ini contoh coding dengan obyek koneksi OleDbConnection :
Imports System.Data.OleDbImports System.Data Public Class frmEntrySP Dim cnn As OleDbConnection
Dim cmmd, cmmd1, cmmd2 As OleDbCommand Dim dReader As OleDbDataReader
Private index As Integer = 0 Private Total As Double = 0.0
Private Sub frmEntrySP_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Buka koneksi
cnn = New OleDbConnection(strConn)
If cnn.State <> ConnectionState.Closed Then cnn.Close() cnn.Open()
'Buat AutoNumber u Surat Pesanan Dim strTemp As String = ""
Dim strValue As String = "" Dim sql As String
sql = "SELECT * FROM SP ORDER BY NOSP DESC" cmmd = New OleDbCommand(sql, cnn) dReader = cmmd.ExecuteReader If dReader.Read Then strTemp = Mid(dReader.Item("NOSP"), 3, 5) Else txtNoSP.Text = "SP00001" Exit Sub End If 'MsgBox(strTemp) strValue = Val(strTemp) + 1
txtNoSP.Text = "SP" & Mid("00000", 1, 5 - strValue.Length) & strValue End Sub
Untuk Textboxt kode supplier :
Private Sub txtNoSP_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtNoSP.KeyPress If Asc(e.KeyChar) = 13 Then
btnCariSup.Focus() End If
End Sub
Tombol Cari :
Private Sub btnCariSup_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCariSup.Click
Dim popupsup As New PopSup popupsup.ShowDialog() If popupsup.retKdSup <> "" Then txtkdsup.Text = popupsup.retKdSup txtNmSup.Text = popupsup.retNmSup txtNmSup.Focus() End If End Sub
Untuk textboxt nama supplier :
Private Sub txtNmsup_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtNmSup.KeyPress If Asc(e.KeyChar) = 13 Then
BtnCariBrg.Focus() End If
End Sub
Untuk Textboxt Jumlah barang :
Private Sub txtJmlbeli_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtJmlBeli.KeyPress If Asc(e.KeyChar) = 13 Then
SetTotal()
txtTotal.Focus() End If
End Sub
Untuk Textbox Total :
Private Sub txtTotal_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtTotal.KeyPress If Asc(e.KeyChar) = 13 Then btnTambah.Focus() End If End Sub Sub SetTotal() Dim a As Integer
a = CInt(txtJmlBeli.Text) * CInt(txtSatuan.Text)
txtTotal.Text = Format(CDbl(CStr(a)), "##,####,####,###") 'txt.Text = Format(CDbl(txt.Text), "##,####,####,###") End Sub
Untuk tombol cari barang :
Private Sub BtnCariBrg_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnCariBrg.Click
Dim popupbrg As New PopBrg popupbrg.ShowDialog()
If popupbrg.retKdBrg <> "" Then txtKdBrg.Text = popupbrg.retKdBrg txtNmBrg.Text = popupbrg.retNmBrg
txtSatuan.Text = Format(CDbl(popupbrg.retSatuan), "##,####,####,###")
txtJmlBeli.Focus() End If
End Sub
Untuk Tombol tambah :
Private Sub btnTambah_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnTambah.Click
Dim Value() As String = {txtKdBrg.Text, txtNmBrg.Text, txtSatuan.Text, txtJmlBeli.Text, txtTotal.Text}
AddList(Value)
Total += CDbl(txtTotal.Text) : txtGrandTotal.Text = Format(CDbl(CStr(Total)), "##,####,####,###")
txtKdBrg.Text = "" : txtNmBrg.Text = "" : txtSatuan.Text = "" : txtJmlBeli.Text = ""
txtTotal.Text = "" txtKdBrg.Focus() End Sub
Sub AddList(ByVal Value() As String) Dim subIndex As Integer
ListView1.Items.Add("") For subIndex = 0 To 4 ListView1.Items(index).SubItems.Add("") ListView1.Items(index).SubItems(subIndex).Text = Value(subIndex) Next
index = index + 1 End Sub
Untuk Tombol Simpan :
Private Sub cmdSimpan_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdSimpan.Click
Dim counter As Integer Dim sql1, sql2 As String Try
sql1 = "INSERT INTO SP(NOSP, TGLSP, KDSUP) " & _ "VALUES('" & txtNoSP.Text & "','" & _
DateTimePicker3.Text & "','" & _ txtkdsup.Text & "')"
cmmd1 = New OleDbCommand(sql1, cnn) Dim x As Integer = cmmd1.ExecuteNonQuery For counter = 0 To index - 1
sql2 = "INSERT INTO PESAN(TKDBRG,NOSP, JML, HRG) " & _ "VALUES('" & _
ListView1.Items(counter).SubItems(0).Text & "','" & _ txtNoSP.Text & "','" & _
ListView1.Items(counter).SubItems(3).Text & "','" & _ ListView1.Items(counter).SubItems(2).Text & "')" cmmd2 = New OleDbCommand(sql2, cnn)
cmmd2.ExecuteNonQuery() Next
If x = 1 Then
MessageBox.Show("DATA SP BERHASIL DISIMPAN") End If
Catch ex As Exception MsgBox(ex.Message) End Try
End Sub
Untuk tombol Batal :
Private Sub cmdBatal_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdBatal.Click
ListView1.Items.Clear() index = 0 : Total = 0 txtGrandTotal.Text = "" End Sub
Untuk Tombol keluar :
Private Sub cmdKeluar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdKeluar.Click
Me.Close() End Sub End Class
