BindingManagerBase.Position 屬性

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

當在衍生類別中覆寫時，取得或設定控制項 (繫結至這個資料來源) 所指向基礎清單中的位置。

public:
 abstract property int Position { int get(); void set(int value); };

public abstract int Position { get; set; }

member this.Position : int with get, set

Public MustOverride Property Position As Integer

屬性值

Int32

以零為起始的索引，指定基礎清單中的位置。

範例

下列程式碼範例顯示四個設定 Position 屬性的方法。 方法會將 MoveNext 屬性遞增 1。 方法 MovePrevious 會將 屬性遞減 1。 方法會將 MoveFirst 屬性設定為 0，而 方法會將 MoveLast 屬性設定為 屬性減 1 的值 Count 。

private:
   void BindingManagerBase_CurrentChanged( Object^ sender, EventArgs^ /*e*/ )
   {
      // Print the new value of the current object.
      Console::Write( "Current Changed: " );
      Console::WriteLine( ( (BindingManagerBase^)(sender) )->Current );
   }

   void MoveNext()
   {
      // Increment the Position property value by one.
      myBindingManagerBase->Position = myBindingManagerBase->Position + 1;
   }

   void MovePrevious()
   {
      // Decrement the Position property value by one.
      myBindingManagerBase->Position = myBindingManagerBase->Position - 1;
   }

   void MoveFirst()
   {
      // Go to the first item in the list.
      myBindingManagerBase->Position = 0;
   }

   void MoveLast()
   {
      // Go to the last row in the list.
      myBindingManagerBase->Position = myBindingManagerBase->Count - 1;
   }

private void BindingManagerBase_CurrentChanged
(object sender, EventArgs e)
{
   // Print the new value of the current object.
   Console.Write("Current Changed: ");
   Console.WriteLine(((BindingManagerBase)sender).Current);
}

private void MoveNext()
{
   // Increment the Position property value by one.
   myBindingManagerBase.Position += 1;
}

private void MovePrevious()
{
   // Decrement the Position property value by one.
   myBindingManagerBase.Position -= 1;
}

private void MoveFirst()
{
   // Go to the first item in the list.
   myBindingManagerBase.Position = 0;
}

private void MoveLast()
{
   // Go to the last row in the list.
   myBindingManagerBase.Position = 
   myBindingManagerBase.Count - 1;
}

Private Sub BindingManagerBase_CurrentChanged(sender As Object, e As EventArgs)
    ' Print the new value of the current object.
    Console.Write("Current Changed: ")
    Console.WriteLine(CType(sender, BindingManagerBase).Current)
End Sub


Private Sub MoveNext()
    ' Increment the Position property value by one.
    myBindingManagerBase.Position += 1
End Sub


Private Sub MovePrevious()
    ' Decrement the Position property value by one.
    myBindingManagerBase.Position -= 1
End Sub


Private Sub MoveFirst()
    ' Go to the first item in the list.
    myBindingManagerBase.Position = 0
End Sub


Private Sub MoveLast()
    ' Go to the last row in the list.
    myBindingManagerBase.Position = myBindingManagerBase.Count - 1
End Sub

備註

Position使用 屬性逐一查看 所 BindingManagerBase 維護的基礎清單。 若要移至第一個專案，請將 設定 Position 為 0。 若要移至清單結尾，請將 設定 Position 為 屬性的值 Count 減 1。

當 PositionChanged 屬性值變更時， Position 就會發生此事件。

另請參閱

• PositionChanged
• Current
• Count