DataRow.HasVersion Method
.NET Framework 2.0
Gets a value that indicates whether a specified version exists.
Namespace: System.Data
Assembly: System.Data (in system.data.dll)
Assembly: System.Data (in system.data.dll)
public boolean HasVersion ( DataRowVersion version )
public function HasVersion ( version : DataRowVersion ) : boolean
Parameters
- version
One of the DataRowVersion values that specifies the row version.
Return Value
true if the version exists; otherwise, false.The following example uses the HasVersion method to determine whether the current value of a column and the proposed value are the same. If so, the edit is canceled. Otherwise, the AcceptChanges method is called to end the edit.
Private Sub CheckVersionBeforeAccept() ' Assuming the DataGrid is bound to a DataTable. Dim table As DataTable = CType(DataGrid1.DataSource, DataTable) Dim row As DataRow = table.Rows(DataGrid1.CurrentCell.RowNumber) row.BeginEdit row(1) = Edit1.Text If row.HasVersion(datarowversion.Proposed) Then If row(1, DataRowVersion.Current) Is _ row(1, DataRowversion.Proposed) Then Console.WriteLine("The original and the proposed are the same") row.CancelEdit Exit Sub Else row.AcceptChanges End If Else Console.WriteLine("No new values proposed") End If End Sub
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.