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DataRow.HasVersion Method

Gets a value that indicates whether a specified version exists.

Namespace: System.Data
Assembly: System.Data (in system.data.dll)

public bool HasVersion (
	DataRowVersion version
)
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.

See the BeginEdit method for more information.

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.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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