ListViewItem.Tag 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。
取得或設定物件,其中包含與項目相關的資料。
public:
property System::Object ^ Tag { System::Object ^ get(); void set(System::Object ^ value); };
[System.ComponentModel.Bindable(true)]
[System.ComponentModel.TypeConverter(typeof(System.ComponentModel.StringConverter))]
public object Tag { get; set; }
[System.ComponentModel.Bindable(true)]
[System.ComponentModel.TypeConverter(typeof(System.ComponentModel.StringConverter))]
public object? Tag { get; set; }
[<System.ComponentModel.Bindable(true)>]
[<System.ComponentModel.TypeConverter(typeof(System.ComponentModel.StringConverter))>]
member this.Tag : obj with get, set
Public Property Tag As Object
屬性值
物件,包含與項目相關的資料。
- 屬性
範例
下列程式碼範例示範如何初始化 ListViewItem 和 設定 Tag 和 Text 屬性。 若要執行此範例,請將下列程式碼放在包含 ListView 具名 ListView1
的表單中,並從表單的建構函式或 Load 事件處理方法呼叫 InitializeListViewItems
。
private:
void InitializeListViewItems()
{
ListView1->View = View::List;
array<System::Windows::Forms::Cursor^>^favoriteCursors = {Cursors::Help,Cursors::Hand,Cursors::No,Cursors::Cross};
// Populate the ListView control with the array of Cursors.
System::Collections::IEnumerator^ myEnum = favoriteCursors->GetEnumerator();
while ( myEnum->MoveNext() )
{
System::Windows::Forms::Cursor^ aCursor = safe_cast<System::Windows::Forms::Cursor^>(myEnum->Current);
// Construct the ListViewItem object
ListViewItem^ item = gcnew ListViewItem;
// Set the Text property to the cursor name.
item->Text = aCursor->ToString();
// Set the Tag property to the cursor.
item->Tag = aCursor;
// Add the ListViewItem to the ListView.
ListView1->Items->Add( item );
}
}
private void InitializeListViewItems()
{
ListView1.View = View.List;
Cursor[] favoriteCursors = new Cursor[]{Cursors.Help,
Cursors.Hand, Cursors.No, Cursors.Cross};
// Populate the ListView control with the array of Cursors.
foreach ( Cursor aCursor in favoriteCursors )
{
// Construct the ListViewItem object
ListViewItem item = new ListViewItem();
// Set the Text property to the cursor name.
item.Text = aCursor.ToString();
// Set the Tag property to the cursor.
item.Tag = aCursor;
// Add the ListViewItem to the ListView.
ListView1.Items.Add(item);
}
}
Private Sub InitializeListViewItems()
ListView1.View = View.List
Dim aCursor As Cursor
Dim favoriteCursors() As Cursor = New Cursor() _
{Cursors.Help, Cursors.Hand, Cursors.No, Cursors.Cross}
' Populate the ListView control with the array of Cursors.
For Each aCursor In favoriteCursors
' Construct the ListViewItem object
Dim item As New ListViewItem
' Set the Text property to the cursor name.
item.Text = aCursor.ToString
' Set the Tag property to the cursor.
item.Tag = aCursor
' Add the ListViewItem to the ListView.
ListView1.Items.Add(item)
Next
End Sub
備註
屬性 Tag 可用來儲存您想要與專案產生關聯的任何物件。 雖然您可以儲存任何專案, Tag 但 屬性通常用來儲存專案的相關字串資訊,例如唯一識別碼或資料庫中專案資料的索引位置。