DataGridBoolColumn.AllowNullChanged イベント

AllowNull プロパティが変更されると発生します。

Public Event AllowNullChanged As EventHandler
[C#]
public event EventHandler AllowNullChanged;
[C++]
public: __event EventHandler* AllowNullChanged;

[JScript] JScript では、このクラスで定義されているイベントを処理できます。ただし、独自に定義することはできません。

イベント データ

イベント ハンドラが EventArgs 型の引数を受け取りました。

使用例

 
Private Sub RegisterEventHandlers(myDataGridBoolColumn As DataGridBoolColumn)
   AddHandler myDataGridBoolColumn.AllowNullChanged, _
                       AddressOf myDataGridBoolColumn_AllowNullChanged
   AddHandler myDataGridBoolColumn.TrueValueChanged, _
                       AddressOf myDataGridBoolColumn_TrueValueChanged
   AddHandler myDataGridBoolColumn.FalseValueChanged, _
                       AddressOf myDataGridBoolColumn_FalseValueChanged
End Sub 'RegisterEventHandlers


' Event handler for event when 'TrueValue' is property changed.
Private Sub myDataGridBoolColumn_TrueValueChanged(sender As Object, e As EventArgs)
   MessageBox.Show("The TrueValue property of the DataGridBoolColumn has been changed to " _
                                                 & myDataGridBoolColumn.TrueValue)
End Sub 'myDataGridBoolColumn_TrueValueChanged


' Event handler for event when 'FalseValue' is property changed.
Private Sub myDataGridBoolColumn_FalseValueChanged(sender As Object, e As EventArgs)
   MessageBox.Show("The FalseValue property of the DataGridBoolColumn has been changed to " _
                                                     & myDataGridBoolColumn.FalseValue)
End Sub 'myDataGridBoolColumn_FalseValueChanged


' Event handler for event when 'AllowNull' is property changed.
Private Sub myDataGridBoolColumn_AllowNullChanged(sender As Object, e As EventArgs)
   MessageBox.Show("The AllowNull property of DataGridBoolColumn has been changed to " _
                                                       & myDataGridBoolColumn.AllowNull)
End Sub 'myDataGridBoolColumn_AllowNullChanged



[C#] 

   private void RegisterEventHandlers(DataGridBoolColumn myDataGridBoolColumn)
   {
      myDataGridBoolColumn.AllowNullChanged += 
         new System.EventHandler(myDataGridBoolColumn_AllowNullChanged);
      myDataGridBoolColumn.TrueValueChanged += 
         new System.EventHandler(myDataGridBoolColumn_TrueValueChanged);
      myDataGridBoolColumn.FalseValueChanged +=
         new System.EventHandler(myDataGridBoolColumn_FalseValueChanged);
   }

   // Event handler for event when 'TrueValue' is property changed.
   private void myDataGridBoolColumn_TrueValueChanged(object sender, EventArgs e)
   {
      MessageBox.Show("The TrueValue property of the DataGridBoolColumn has been changed to "
         + myDataGridBoolColumn.TrueValue);
   }

   // Event handler for event when 'FalseValue' is property changed.
   private void myDataGridBoolColumn_FalseValueChanged(object sender, EventArgs e)
   {
      MessageBox.Show("The FalseValue property of the DataGridBoolColumn has been changed to "
         + myDataGridBoolColumn.FalseValue);
   }

   // Event handler for event when 'AllowNull' is property changed.
   private void myDataGridBoolColumn_AllowNullChanged(object sender, EventArgs e)
   {
      MessageBox.Show("The AllowNull property of DataGridBoolColumn has been changed to "
         + myDataGridBoolColumn.AllowNull);
   }


[C++] 

private:
    void RegisterEventHandlers(DataGridBoolColumn* myDataGridBoolColumn) {
        myDataGridBoolColumn->AllowNullChanged += 
            new System::EventHandler(this, &MyForm::myDataGridBoolColumn_AllowNullChanged);
        myDataGridBoolColumn->TrueValueChanged += 
            new System::EventHandler(this, &MyForm::myDataGridBoolColumn_TrueValueChanged);
        myDataGridBoolColumn->FalseValueChanged += 
            new System::EventHandler(this, &MyForm::myDataGridBoolColumn_FalseValueChanged);
    }

    // Event handler for event when 'TrueValue' is property changed.
    void myDataGridBoolColumn_TrueValueChanged(Object* /*sender*/, EventArgs* /*e*/) {
        MessageBox::Show(String::Concat(
            S"The TrueValue property of the DataGridBoolColumn has been changed to ", 
            myDataGridBoolColumn->TrueValue));
    }

    // Event handler for event when 'FalseValue' is property changed.
    void myDataGridBoolColumn_FalseValueChanged(Object* /*sender*/, EventArgs* /*e*/) {
        MessageBox::Show(String::Concat(
            S"The FalseValue property of the DataGridBoolColumn has been changed to ",
            myDataGridBoolColumn->FalseValue));
    }

    // Event handler for event when 'AllowNull' is property changed.
    void myDataGridBoolColumn_AllowNullChanged(Object* /*sender*/, EventArgs* /*e*/) {
        MessageBox::Show(String::Concat(
            S"The AllowNull property of DataGridBoolColumn has been changed to ",
            __box(myDataGridBoolColumn->AllowNull)));
    }

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必要条件

プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ

参照

DataGridBoolColumn クラス | DataGridBoolColumn メンバ | System.Windows.Forms 名前空間