DataGridTableStyle.HeaderFontChanged Event

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Occurs when the HeaderFont value changes.

public:
 event EventHandler ^ HeaderFontChanged;

public event EventHandler HeaderFontChanged;

member this.HeaderFontChanged : EventHandler

Public Custom Event HeaderFontChanged As EventHandler

Event Type

EventHandler

Examples

The following code example demonstrates the use of this member.

private:
   void AddCustomDataTableStyle()
   {
      myDataGridTableStyle1 = gcnew DataGridTableStyle;
      myDataGridTableStyle2 = gcnew DataGridTableStyle;
      MessageBox::Show( String::Concat( "LinkColor Before : ", myDataGridTableStyle1->LinkColor ) );
      MessageBox::Show( String::Concat( "HeaderFont Before : ", myDataGridTableStyle1->HeaderFont ) );
      myDataGridTableStyle1->LinkColorChanged += gcnew System::EventHandler( this, &DataGridTableStyle_Sample::LinkColorChanged_Handler );
      myDataGridTableStyle1->HeaderFontChanged += gcnew System::EventHandler( this, &DataGridTableStyle_Sample::HeaderFontChanged_Handler );
      myDataGridTableStyle1->MappingName = "Customers";

      // Set other properties.
      myDataGridTableStyle1->AlternatingBackColor = Color::LightGray;
      myDataGridTableStyle1->LinkColor = Color::Red;
      myDataGridTableStyle1->HeaderFont = gcnew System::Drawing::Font( "Verdana",8.25F,System::Drawing::FontStyle::Bold,System::Drawing::GraphicsUnit::Point,((System::Byte)(0)) );

      // Add a GridColumnStyle and set its MappingName.
      DataGridColumnStyle^ myBoolCol = gcnew DataGridBoolColumn;
      myBoolCol->MappingName = "Current";
      myBoolCol->HeaderText = "IsCurrent Customer";
      myBoolCol->Width = 150;
      myDataGridTableStyle1->GridColumnStyles->Add( myBoolCol );

      // Add a second column style.
      DataGridColumnStyle^ myTextCol = gcnew DataGridTextBoxColumn;
      myTextCol->MappingName = "custName";
      myTextCol->HeaderText = "Customer Name";
      myTextCol->Width = 250;
      myDataGridTableStyle1->GridColumnStyles->Add( myTextCol );

      // Create new ColumnStyle objects
      DataGridColumnStyle^ cOrderDate = gcnew DataGridTextBoxColumn;
      cOrderDate->MappingName = "OrderDate";
      cOrderDate->HeaderText = "Order Date";
      cOrderDate->Width = 100;

      // PropertyDescriptor to create a formatted column.
      PropertyDescriptorCollection^ myPropertyDescriptorCollection = this->BindingContext[myDataSet, "Customers.custToOrders"]->GetItemProperties();
      DataGridColumnStyle^ csOrderAmount = gcnew DataGridTextBoxColumn( myPropertyDescriptorCollection[ "OrderAmount" ],"c",true );
      csOrderAmount->MappingName = "OrderAmount";
      csOrderAmount->HeaderText = "Total";
      csOrderAmount->Width = 100;

      // Add the DataGridTableStyle instances to GridTableStylesCollection.
      myDataGrid->TableStyles->Add( myDataGridTableStyle1 );
   }

   void LinkColorChanged_Handler( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      MessageBox::Show( "LinkColor changed to 'RED'", "DataGridTableStyle" );
   }

   void HeaderFontChanged_Handler( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      MessageBox::Show( "HeaderFont changed to 'VERDANA'", "DataGridTableStyle" );
   }

private void AddCustomDataTableStyle()
{
   myDataGridTableStyle1 = new DataGridTableStyle();
   myDataGridTableStyle2 = new DataGridTableStyle();

   MessageBox.Show("LinkColor Before : "
      +myDataGridTableStyle1.LinkColor);
   MessageBox.Show("HeaderFont Before : "
      +myDataGridTableStyle1.HeaderFont);
   
   myDataGridTableStyle1.LinkColorChanged +=
      new System.EventHandler(LinkColorChanged_Handler);
   myDataGridTableStyle1.HeaderFontChanged 
      += new System.EventHandler(HeaderFontChanged_Handler);
   myDataGridTableStyle1.MappingName = "Customers";

   // Set other properties.
   myDataGridTableStyle1.AlternatingBackColor = Color.LightGray;
   myDataGridTableStyle1.LinkColor = Color.Red;         
   myDataGridTableStyle1.HeaderFont = 
      new System.Drawing.Font("Verdana",
         8.25F,
         System.Drawing.FontStyle.Bold, 
         System.Drawing.GraphicsUnit.Point,
         ((System.Byte)(0)));

   // Add a GridColumnStyle and set its MappingName.             
   DataGridColumnStyle myBoolCol = new DataGridBoolColumn();
   myBoolCol.MappingName = "Current";
   myBoolCol.HeaderText = "IsCurrent Customer";
   myBoolCol.Width = 150;
   myDataGridTableStyle1.GridColumnStyles.Add(myBoolCol);

   // Add a second column style.
   DataGridColumnStyle myTextCol = new DataGridTextBoxColumn();
   myTextCol.MappingName = "custName";
   myTextCol.HeaderText = "Customer Name";
   myTextCol.Width = 250;
   myDataGridTableStyle1.GridColumnStyles.Add(myTextCol);

   // Create new ColumnStyle objects
   DataGridColumnStyle cOrderDate = new DataGridTextBoxColumn();
   cOrderDate.MappingName = "OrderDate";
   cOrderDate.HeaderText = "Order Date";
   cOrderDate.Width = 100;

   // PropertyDescriptor to create a formatted column.
   PropertyDescriptorCollection myPropertyDescriptorCollection = this.BindingContext
      [myDataSet, "Customers.custToOrders"].GetItemProperties(); 
   
   DataGridColumnStyle csOrderAmount = 
      new DataGridTextBoxColumn(myPropertyDescriptorCollection["OrderAmount"], "c", true);
   csOrderAmount.MappingName = "OrderAmount";
   csOrderAmount.HeaderText = "Total";
   csOrderAmount.Width = 100;
        
   // Add the DataGridTableStyle instances to GridTableStylesCollection.
   myDataGrid.TableStyles.Add(myDataGridTableStyle1);
}
private void LinkColorChanged_Handler(object sender,EventArgs e)
{         
  MessageBox.Show("LinkColor changed to 'RED'", "DataGridTableStyle");
}

private void HeaderFontChanged_Handler(object sender,EventArgs e)
{                  
   MessageBox.Show("HeaderFont changed to 'VERDANA'",
      "DataGridTableStyle");
}

Private Sub AddCustomDataTableStyle()
   myDataGridTableStyle1 = New DataGridTableStyle()
   myDataGridTableStyle2 = New DataGridTableStyle()

   MessageBox.Show("LinkColor Before : " & myDataGridTableStyle1.LinkColor.ToString)
   MessageBox.Show("HeaderFont Before : " & myDataGridTableStyle1.HeaderFont.ToString)

   AddHandler myDataGridTableStyle1.LinkColorChanged, AddressOf LinkColorChanged_Handler
   AddHandler myDataGridTableStyle1.HeaderFontChanged, AddressOf HeaderFontChanged_Handler
   myDataGridTableStyle1.MappingName = "Customers"

   ' Set other properties.
   myDataGridTableStyle1.AlternatingBackColor = Color.LightGray
   myDataGridTableStyle1.LinkColor = Color.Red
   myDataGridTableStyle1.HeaderFont = New System.Drawing.Font _
            ("Verdana", 8.25F, System.Drawing.FontStyle.Bold, _
             System.Drawing.GraphicsUnit.Point, CType(0, System.Byte))

   ' Add a GridColumnStyle and set its MappingName.
   Dim myBoolCol = New DataGridBoolColumn()
   myBoolCol.MappingName = "Current"
   myBoolCol.HeaderText = "IsCurrent Customer"
   myBoolCol.Width = 150
   myDataGridTableStyle1.GridColumnStyles.Add(myBoolCol)

   ' Add a second column style.
   Dim myTextCol = New DataGridTextBoxColumn()
   myTextCol.MappingName = "custName"
   myTextCol.HeaderText = "Customer Name"
   myTextCol.Width = 250
   myDataGridTableStyle1.GridColumnStyles.Add(myTextCol)

   ' Create new ColumnStyle objects
   Dim cOrderDate = New DataGridTextBoxColumn()
   cOrderDate.MappingName = "OrderDate"
   cOrderDate.HeaderText = "Order Date"
   cOrderDate.Width = 100

   ' PropertyDescriptor to create a formatted column.
   Dim myPropertyDescriptorCollection As PropertyDescriptorCollection = _
            Me.BindingContext(myDataSet, "Customers.custToOrders").GetItemProperties()

   Dim csOrderAmount = New DataGridTextBoxColumn(myPropertyDescriptorCollection _
                           ("OrderAmount"), "c", True)
   csOrderAmount.MappingName = "OrderAmount"
   csOrderAmount.HeaderText = "Total"
   csOrderAmount.Width = 100

   ' Add the DataGridTableStyle instances to GridTableStylesCollection.
   myDataGrid.TableStyles.Add(myDataGridTableStyle1)
End Sub

Private Sub LinkColorChanged_Handler(ByVal sender As Object, ByVal e As EventArgs)
   MessageBox.Show("LinkColor changed to 'RED'", "DataGridTableStyle")
End Sub


Private Sub HeaderFontChanged_Handler(ByVal sender As Object, ByVal e As EventArgs)
   MessageBox.Show("HeaderFont changed to 'VERDANA'", "DataGridTableStyle")
End Sub

Remarks

For more information about handling events, see Handling and Raising Events.

Applies to

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