DataRepeaterAddRemoveItemsCancelEventArgs 建構函式

發行項
10/31/2012

初始化 DataRepeaterAddRemoveItemsCancelEventArgs 類別的新執行個體。

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

語法

'宣告
Public Sub New ( _
    index As Integer, _
    count As Integer _
)

public DataRepeaterAddRemoveItemsCancelEventArgs(
    int index,
    int count
)

public:
DataRepeaterAddRemoveItemsCancelEventArgs(
    int index, 
    int count
)

new : 
        index:int * 
        count:int -> DataRepeaterAddRemoveItemsCancelEventArgs

public function DataRepeaterAddRemoveItemsCancelEventArgs(
    index : int, 
    count : int
)

參數

index
型別：System.Int32
索引DataRepeaterItem ，正被刪除。

count
型別：System.Int32
正在刪除的項目數目。

備註

DeletingItems和UserDeletingItems刪除提出要求時，就會發生事件DataRepeaterItem的DataRepeater控制項。

您可以刪除設定來覆寫cancel參數的DataRepeaterAddRemoveItemsCancelEventArgs到True。

範例

下列範例示範如何取消刪除動作，在DeletingItems事件處理常式。

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.");
    }
}