BindingManagerBase.Position 屬性

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

來源:

BindingManagerBase.cs

當在派生類別中被覆寫時，會取得或設定綁定到該資料來源所指向的底層清單中的位置。

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

一個以零為基礎的索引，用來指定底層列表中的某一位置。

範例

以下程式碼範例展示了四個設定該 Position 屬性的方法。 此 MoveNext 方法將屬性增加1。 此 MovePrevious 方法將性質減少1。 該 MoveFirst 方法將性質設為 0， MoveLast 而該方法則將性質設定為該性質的 Count 值減 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 );
   }

   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

利用該 Position 屬性遍歷由 BindingManagerBase維護的底層清單。 要進入第一個項目，請將 設 Position 為 0。 要進入清單的末尾，將 設定 Position 為該屬性的值 Count 減 1。

當房產價值變動時Position，事件PositionChanged就會發生。

另請參閱

• PositionChanged
• Current
• Count