Cellvalidating cancel


26-Jul-2017 13:18

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Add(ts) End Sub End Class Public Class Data Grid Combo Box Column Inherits Data Grid Text Box Column Public With Events Column Combo Box As No Key Up Combo 'special class Private With Events cm Source As Currency Manager Private m Row Num As Integer Private is Editing As Boolean Dim str Values() As String = Shared Sub New() End Sub Public Sub New() My Base.

Hide() End Sub Protected Overrides Function Get Column Value At Row(By Val source As System. Get Column Value At Row(source, row Num)) Return str Values(int Value) End Function End Class Public Class No Key Up Combo Inherits Combo Box Protected Overrides Sub Wnd Proc(By Ref m As System. New() Column Combo Box = New No Key Up Combo Add Handler Column Combo Box.

Selection Change Committed, _ New Event Handler(Address Of Combo Start Editing) End Sub Protected Overloads Overrides Sub Edit(By Val source As Currency Manager, _ By Val row Num As Integer, By Val bounds As Rectangle, By Val read Only1 As Boolean, _ By Val instant Text As String, By Val cell Is Visible As Boolean) My Base.

New() Column Combo Box = New No Key Up Combo Add Handler Column Combo Box.

Add(ts) End Sub Be aware this tip is for the Windows Forms Data Grid, not for the Data Grid View To validate the text entered into a datagrid add a handler to the Datagrid Textbox Column's validating event. Dim ds As New Data Set Private Sub Form1_Load(By Val sender As System. Fill(ds, "Products") Dim ts As New Data Grid Table Style ts.

Load Dim conn As Sql Connection Dim str Conn As String Dim str SQL As String Dim da As Sql Data Adapter str Conn = "Server = (local);" str Conn &= "Database = North Wind;" str Conn &= "Integrated Security = SSPI;" conn = New Sql Connection(str Conn) da = New Sql Data Adapter("Select * From Products", conn) da. Table Name Dim col Discontinued As New Data Grid Bool Column With col Discontinued .

column, its value is tested for validity by checking that it is not empty.

If the event handler for the Cell Validating event finds that the value is an empty string, the Data Grid View prevents the user from exiting the cell until a non-empty string is entered.

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Hide() End Sub End Class Public Class No Key Up Combo Inherits Combo Box Protected Overrides Sub Wnd Proc(By Ref m As System. Add(text Col) Dim cmb Txt Col As New Data Grid Combo Box Column cmb Txt Col.