DataRow.HasVersion(DataRowVersion) 方法

public:
 bool HasVersion(System::Data::DataRowVersion version);

public bool HasVersion (System.Data.DataRowVersion version);

member this.HasVersion : System.Data.DataRowVersion -> bool

Public Function HasVersion (version As DataRowVersion) As Boolean

如果版本存在，則為 true，否則為 false。

下列範例會 HasVersion 使用 方法來判斷數據行目前的值和建議的值是否相同。 如果是，則會取消編輯。 否則，會 AcceptChanges 呼叫 方法來結束編輯。

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

如需詳細資訊，請參閱 BeginEdit 方法。

• AcceptChanges()
• BeginEdit()
• CancelEdit()
• Item[Int32]
• GetChildRows(String)
• GetParentRows(String)
• EndEdit()
• RowState