ListViewItem.Tag 屬性

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

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))>]
member this.Tag : obj with get, set

Public Property Tag As Object

屬性值

Object

物件，包含與項目相關的資料。

屬性

BindableAttribute TypeConverterAttribute

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。