DataGridBoolColumn.TrueValueChanged Event

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Important

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Occurs when the TrueValue property value is changed.

public:
 event EventHandler ^ TrueValueChanged;

public event EventHandler TrueValueChanged;

member this.TrueValueChanged : EventHandler

Public Custom Event TrueValueChanged As EventHandler

Event Type

EventHandler

Examples

The following code example demonstrates the use of this member.

void RegisterEventHandlers( DataGridBoolColumn^ myDataGridBoolColumn )
{
   myDataGridBoolColumn->AllowNullChanged += gcnew System::EventHandler( this, &MyForm::myDataGridBoolColumn_AllowNullChanged );
   myDataGridBoolColumn->TrueValueChanged += gcnew System::EventHandler( this, &MyForm::myDataGridBoolColumn_TrueValueChanged );
   myDataGridBoolColumn->FalseValueChanged += gcnew 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( "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( "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( "The AllowNull property of DataGridBoolColumn has been changed to ", myDataGridBoolColumn->AllowNull ) );
}


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);
}

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


' 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


' 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


' 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

Remarks

For more information about how to handle events, see Handling and Raising Events.

Applies to

Ürün	Sürümler
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop	3.0, 10

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