ListViewEditEventArgs.NewEditIndex 屬性
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
取得所編輯項目的索引。
public:
property int NewEditIndex { int get(); };
public int NewEditIndex { get; }
member this.NewEditIndex : int
Public ReadOnly Property NewEditIndex As Integer
屬性值
所編輯項目的索引。
範例
下列範例示範如何使用 NewEditIndex 屬性來擷取 ListViewItem 正在編輯的物件。 此程式代碼範例是提供給 類別之較大範例的 ListViewEditEventArgs 一部分。
void ProductsListView_ItemEditing(Object sender, ListViewEditEventArgs e)
{
ListViewItem item = ProductsListView.Items[e.NewEditIndex];
Label dateLabel = (Label)item.FindControl("DiscontinuedDateLabel");
if (String.IsNullOrEmpty(dateLabel.Text))
return;
//Verify if the item is discontinued.
DateTime discontinuedDate = DateTime.Parse(dateLabel.Text);
if (discontinuedDate < DateTime.Now)
{
Message.Text = "You cannot edit a discontinued item.";
e.Cancel = true;
ProductsListView.SelectedIndex = -1;
}
}
Sub ProductsListView_ItemEditing(ByVal sender As Object, ByVal e As ListViewEditEventArgs)
Dim item As ListViewItem = ProductsListView.Items(e.NewEditIndex)
Dim dateLabel As Label = CType(item.FindControl("DiscontinuedDateLabel"), Label)
If String.IsNullOrEmpty(dateLabel.Text) Then _
Return
'Verify if the item is discontinued.
Dim discontinuedDate As DateTime = DateTime.Parse(dateLabel.Text)
If discontinuedDate < DateTime.Now Then
Message.Text = "You cannot edit a discontinued item."
e.Cancel = True
ProductsListView.SelectedIndex = -1
End If
End Sub
備註
NewEditIndex使用 屬性來判斷正在編輯的專案索引。 專案索引通常用來從 Items 控件的 ListView 集合中擷取此專案,這可讓您存取項目的屬性。