Hasil dari from transaksi penjualan adalah seperti gambar dibawah ini :
Berikut langkahnya :
Silahakn buka VB .NET anda
Bautlah sebuah project VB .NET
Jika sudah muncul Form1, silahkan design form1 seperti gambar dibawah ini :
DataGridView yang diganti namanya menjadi : dgvData
Button Tambah : btnAdd
Button Hapus : btnRemove
Label Total
dan TexBox : txtSumTotal
JIka sudah selesai membuat Form seperti gambar diatas,
Silahkan Masukan Koding pada Form1 dibawah ini :
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.CenterToScreen()
Me.Text = "Contoh Form Transaksi Penjualan - www.javanetmedia.com"
txtSumTotal.Text = "0.00"
SetupGridView()
Dim row As String() = New String() {1, "BRG0001", "Nama Barang 1", 1, 0.0, 0.0}
' Add First Row
dgvData.Rows.Add(row)
' Focus
dgvData.Focus()
dgvData.CurrentCell = dgvData.Rows(dgvData.RowCount - 1).Cells(3)
' / Summary Cell Index = 5
CalSumTotal()
End Sub
' / --------------------------------------------------------------------------------
Private Sub SetupGridView()
With dgvData
.RowHeadersVisible = False
.AllowUserToAddRows = False
.AllowUserToDeleteRows = False
.AllowUserToResizeRows = False
.MultiSelect = False
.ReadOnly = False
' Columns Specified
dgvData.ColumnCount = 6
dgvData.Columns(0).Name = "No"
'dgvData.Columns(0).Visible = False ' Don't show Primary Key
dgvData.Columns(1).Name = "Kode_Barang"
dgvData.Columns(2).Name = "Nama_barang"
dgvData.Columns(3).Name = "Jumlah"
dgvData.Columns(3).ValueType = GetType(Integer)
dgvData.Columns(4).Name = "Harga"
dgvData.Columns(4).ValueType = GetType(Double)
dgvData.Columns(5).Name = "Total"
dgvData.Columns(5).ValueType = GetType(Double)
' Hidden column index 0 ... It's Primary Key for DataBase
.Columns("No").Visible = True ' False
.Columns("Kode_Barang").HeaderText = "Kode_Barang"
.Columns("Nama_Barang").HeaderText = "Nama_Barang"
.Columns("Jumlah").HeaderText = "Jumlah"
.Columns("Harga").HeaderText = "Harga"
' Total Column
With .Columns("Total")
.HeaderText = "Total"
.ReadOnly = True
.DefaultCellStyle.BackColor = System.Drawing.Color.LightGoldenrodYellow
.DefaultCellStyle.ForeColor = System.Drawing.Color.Red
.DefaultCellStyle.Font = New Font(dgvData.Font, FontStyle.Bold)
End With
' Adjust Column width
.Columns(0).Width = 35
.Columns(1).Width = dgvData.Width \ 5
.Columns(2).Width = dgvData.Width \ 5
.Columns(3).Width = dgvData.Width \ 5 - 20
.Columns(4).Width = dgvData.Width \ 5 - 20
.Columns(5).Width = dgvData.Width \ 5 ' + 2
' Header Own Style
With .ColumnHeadersDefaultCellStyle
.BackColor = Color.Navy
.ForeColor = Color.White
.Font = New Font(dgvData.Font, FontStyle.Bold)
End With
' Alignment only columns 3 to 5
For i As Byte = 3 To 5
' Header Alignment
.Columns(i).HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleRight
' Cell Alignment
.Columns(i).DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleRight
Next
End With
End Sub
' / --------------------------------------------------------------------------------
Private Sub Form1_Resize(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Resize
With dgvData
.Width = Me.Width - 22
End With
txtSumTotal.Left = Me.Width - (txtSumTotal.Width + 20)
Label1.Location = New Point(txtSumTotal.Left - Me.Label1.Width, txtSumTotal.Top + 3)
End Sub
' / --------------------------------------------------------------------------------
' / Add new row
Private Sub btnAddRow_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAdd.Click
Dim Position As Integer = dgvData.Rows.Count - 1
Dim LastRow = (From Items In dgvData.Rows.Cast(Of DataGridViewRow)() Select Items).ElementAt(Position)
Dim PK As Long = LastRow.Cells(0).Value + 1
Dim row As String() = New String() {PK, "BRG000" & PK, "Nama Barang " & PK, 1, 0.0, 0.0}
dgvData.Rows.Add(row)
' Focus
dgvData.CurrentCell = dgvData.Rows(dgvData.RowCount - 1).Cells(3)
dgvData.Focus()
' /
CalSumTotal()
End Sub
' / --------------------------------------------------------------------------------
' / Remove selected row
Private Sub btnDelRow_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRemove.Click
If dgvData.RowCount = 1 Then Exit Sub
dgvData.Rows.Remove(dgvData.CurrentRow)
dgvData.Refresh()
' /
CalSumTotal()
End Sub
' / --------------------------------------------------------------------------------
' / Calcualte sum of Total (Column Index = 5)
Private Sub CalSumTotal()
txtSumTotal.Text = "0.00"
For i As Byte = 0 To dgvData.RowCount - 1
' CDbl = Convert to Double
txtSumTotal.Text = CDbl(txtSumTotal.Text) + CDbl(dgvData.Rows(i).Cells(5).Value)
Next
txtSumTotal.Text = Format(CDbl(txtSumTotal.Text), "#,##0.00")
End Sub
' / --------------------------------------------------------------------------------
' / Before Edit Data
Private Sub dgvData_CellBeginEdit(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellCancelEventArgs) Handles dgvData.CellBeginEdit
Dim Quantity As Integer = dgvData.Rows(e.RowIndex).Cells(3).Value
Dim UnitPrice As Double = dgvData.Rows(e.RowIndex).Cells(4).Value
dgvData.Rows(e.RowIndex).Cells(5).Value = (Quantity * UnitPrice).ToString("#,##0.00")
' /
CalSumTotal()
End Sub
' / --------------------------------------------------------------------------------
' / After you press Enter
Private Sub dgvData_CellEndEdit(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles dgvData.CellEndEdit
Select Case e.ColumnIndex
Case 3, 4 ' Column Index = 3 (Quantity), Column Index = 4 (UnitPrice)
' Quantity
' If Null Value
If IsDBNull(dgvData.Rows(e.RowIndex).Cells(3).Value) Then dgvData.Rows(e.RowIndex).Cells(3).Value = 0
Dim Quantity As Integer = dgvData.Rows(e.RowIndex).Cells(3).Value
' Keep original value in temporary. (Tag Properties)
dgvData.Tag = Quantity
If Quantity <= 0 Then
dgvData.Rows(e.RowIndex).Cells(3).Value = dgvData.Tag
Quantity = dgvData.Tag
End If
' UnitPrice
' If Null Value
If IsDBNull(dgvData.Rows(e.RowIndex).Cells(4).Value) Then dgvData.Rows(e.RowIndex).Cells(4).Value = 0.0
Dim UnitPrice As Double = dgvData.Rows(e.RowIndex).Cells(4).Value
dgvData.Tag = UnitPrice
If UnitPrice < 0 Then
dgvData.Rows(e.RowIndex).Cells(4).Value = dgvData.Tag
UnitPrice = dgvData.Tag
End If
' Quantity x UnitPrice
dgvData.Rows(e.RowIndex).Cells(5).Value = (Quantity * UnitPrice).ToString("#,##0.00")
CalSumTotal()
End Select
End Sub
' / --------------------------------------------------------------------------------
Private Sub dgvData_EditingControlShowing(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles dgvData.EditingControlShowing
Select Case dgvData.Columns(dgvData.CurrentCell.ColumnIndex).Name
' / Can use both ColumeIndex or Field Name
Case "Quantity", "UnitPrice"
RemoveHandler e.Control.KeyPress, AddressOf ValidKeyPress
AddHandler e.Control.KeyPress, AddressOf ValidKeyPress
End Select
End Sub
' / --------------------------------------------------------------------------------
Private Sub ValidKeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs)
Dim tb As TextBox = sender
Select Case dgvData.CurrentCell.ColumnIndex
Case 3 ' Quantity is Integer
Select Case e.KeyChar
Case "0" To "9" ' digits 0 - 9 allowed
Case ChrW(Keys.Back) ' backspace allowed for deleting (Delete key automatically overrides)
Case ChrW(Keys.Delete) ' Delete key
Case Else ' everything else ....
' True = CPU cancel the KeyPress event
e.Handled = True ' and it's just like you never pressed a key at all
End Select
Case 4 ' UnitPrice is Double
Select Case e.KeyChar
Case "0" To "9"
' Allowed "."
Case "."
' can present "." only one
If InStr(tb.Text, ".") Then e.Handled = True
Case ChrW(Keys.Back)
Case ChrW(Keys.Delete)
Case Else
e.Handled = True
End Select
End Select
End Sub
Private Sub Form1_FormClosed(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosedEventArgs) Handles Me.FormClosed
Me.Dispose()
Application.Exit()
End Sub
End Class
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