DataRepeaterAddRemoveItemsCancelEventArgs 類別

更新：2007 年 11 月

提供 DeletingItems 和 UserDeletingItems 事件的資料。

命名空間： Microsoft.VisualBasic.PowerPacks
組件： Microsoft.VisualBasic.PowerPacks.Vs (在 Microsoft.VisualBasic.PowerPacks.Vs.dll 中)

語法

Public Class DataRepeaterAddRemoveItemsCancelEventArgs _
    Inherits CancelEventArgs

Dim instance As DataRepeaterAddRemoveItemsCancelEventArgs

public class DataRepeaterAddRemoveItemsCancelEventArgs : CancelEventArgs

public ref class DataRepeaterAddRemoveItemsCancelEventArgs : public CancelEventArgs

public class DataRepeaterAddRemoveItemsCancelEventArgs extends CancelEventArgs

備註

DeletingItems 和 UserDeletingItems 事件會在要求從 DataRepeater 控制項刪除 DataRepeaterItem 時發生。

您可以將 DataRepeaterAddRemoveItemsCancelEventArgs 的 cancel 參數設定為 True，以覆寫刪除動作。

範例

下列範例示範如何取消 DeletingItems 事件處理常式中的刪除動作。

Private Sub DataRepeater1_DeletingItems(ByVal sender As Object, _
 ByVal e As  _
 Microsoft.VisualBasic.PowerPacks.DataRepeaterAddRemoveItemsCancelEventArgs) _
 Handles DataRepeater1.DeletingItems
    ' Check whether the user is a supervisor.
    If My.User.IsInRole("Supervisor") = False Then
        ' Cancel the deletion and display a message.
        e.Cancel = True
        MsgBox("You are not authorized to delete.")
    End If
End Sub

private void DataRepeater1_DeletingItems(object sender, 
    Microsoft.VisualBasic.PowerPacks.DataRepeaterAddRemoveItemsCancelEventArgs e)
{
    // Check whether the user is a supervisor.

    ClientRolePrincipal rolePrincipal =
        System.Threading.Thread.CurrentPrincipal
        as ClientRolePrincipal;

    if (rolePrincipal.IsInRole("supervisor") == false)
    {
        e.Cancel = true;
        MessageBox.Show("You are not authorized to delete.");
    }
}