DataRepeater.AllowUserToDeleteItems 屬性

更新：2007 年 11 月

取得或設定值，這個值決定使用者是否可以在執行階段從 DataRepeater 刪除資料列。

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

語法

Public Property AllowUserToDeleteItems As Boolean

Dim instance As DataRepeater
Dim value As Boolean

value = instance.AllowUserToDeleteItems

instance.AllowUserToDeleteItems = value

public bool AllowUserToDeleteItems { get; set; }

public:
property bool AllowUserToDeleteItems {
    bool get ();
    void set (bool value);
}

public function get AllowUserToDeleteItems () : boolean
public function set AllowUserToDeleteItems (value : boolean)

屬性值

型別：System.Boolean

如果使用者可以刪除資料列則為 true，否則為 false。預設為 true。

備註

當 AllowUserToDeleteItems 屬性是設定為 True 時，使用者可以刪除資料列的方式有二，一是在 BindingNavigator 控制項上按一下 BindingNavigatorDeleteItemToolStripButton，二是在 DataRepeaterItem 獲得焦點時按 DELETE。

當 AllowUserToDeleteItems 屬性是設定為 False 時，會停用 DELETE 鍵盤功能，但 BindingNavigatorDeleteItemToolStripButton 仍然處於啟用狀態。如果您想要讓使用者無法刪除資料列，應該也要在 BindingNavigator 控制項上停用或移除 BindingNavigatorDeleteItemToolStripButton。

範例

在下列程式碼範例中，會示範當 AllowUserToAddItems 屬性是設定為 False 時如何停用 [Delete] (ToolStripButton) 按鈕。這個範例假設您的表單上有一個名為 DataRepeater1 的 DataRepeater 控制項，以及一個 BindingNavigator 控制項。

Private Sub DataRepeater1_AllowUserToDeleteItemsChanged _
 (ByVal sender As Object, ByVal e As System.EventArgs) Handles _
  DataRepeater1.AllowUserToDeleteItemsChanged
    ' If this event occurs during form initialization, exit.
    If Me.IsHandleCreated = False Then Exit Sub
    ' If AllowUserToDeleteItems is False.
    If DataRepeater1.AllowUserToDeleteItems = False Then
        ' Disable the Delete button.
        BindingNavigatorDeleteItem.Enabled = False
    Else
        ' Otherwise, enable the Delete button.
        BindingNavigatorDeleteItem.Enabled = True
    End If
End Sub
Private Sub BindingNavigatorDeleteItem_EnabledChanged(ByVal sender _
 As Object, ByVal e As System.EventArgs) Handles _
 BindingNavigatorDeleteItem.EnabledChanged
    If DataRepeater1.AllowUserToDeleteItems = False Then
        ' The BindingSource resets this property when a 
        ' new record is selected, so override it.
        If BindingNavigatorDeleteItem.Enabled = True Then
            BindingNavigatorDeleteItem.Enabled = False
        End If
    End If
End Sub

private void dataRepeater1_AllowUserToDeleteItemsChanged(object sender, System.EventArgs e)
{
    // If this event occurs during form initialization, exit.
    if (this.IsHandleCreated == false) { return; }
    // If AllowUserToDeleteItems is False.
    if (dataRepeater1.AllowUserToDeleteItems == false)
    // Disable the Delete button.
    {
        bindingNavigatorDeleteItem.Enabled = false;
    }
    else
    {
        // Otherwise, enable the Delete button.
        bindingNavigatorDeleteItem.Enabled = true;
    }
}
private void bindingNavigatorDeleteItem_EnabledChanged(object sender, System.EventArgs e)
{
    if (dataRepeater1.AllowUserToDeleteItems == false)
    // The BindingSource resets this property when a 
    // new record is selected, so override it.
    {
        if (bindingNavigatorDeleteItem.Enabled == true)
        {
            bindingNavigatorDeleteItem.Enabled = false;
        }
    }
}