DataGridTableStyle.HeaderForeColorChanged 事件

在 HeaderForeColor 值更改时发生。

**命名空间:**System.Windows.Forms
**程序集:**System.Windows.Forms（在 system.windows.forms.dll 中）

语法

声明
Public Event HeaderForeColorChanged As EventHandler
用法
Dim instance As DataGridTableStyle
Dim handler As EventHandler

AddHandler instance.HeaderForeColorChanged, handler

public event EventHandler HeaderForeColorChanged

public:
event EventHandler^ HeaderForeColorChanged {
    void add (EventHandler^ value);
    void remove (EventHandler^ value);
}

/** @event */
public void add_HeaderForeColorChanged (EventHandler value)

/** @event */
public void remove_HeaderForeColorChanged (EventHandler value)

JScript 支持使用事件，但不支持进行新的声明。

备注

有关处理事件的更多信息，请参见 使用事件。

示例

Private Sub Create_Table()
   ' Create DataSet.
   myDataSet = New DataSet("myDataSet")
   ' Create DataTable.
   Dim myCustomerTable As New DataTable("Customers")
   ' Create two columns, and add them to the table.
   Dim CustID As New DataColumn("CustID", GetType(Integer))
   Dim CustName As New DataColumn("CustName")
   myCustomerTable.Columns.Add(CustID)
   myCustomerTable.Columns.Add(CustName)
   ' Add table to DataSet.
   myDataSet.Tables.Add(myCustomerTable)
   dataGrid1.SetDataBinding(myDataSet, "Customers")
   myTableStyle = New DataGridTableStyle()
   myTableStyle.MappingName = "Customers"
   AddHandler myTableStyle.HeaderBackColorChanged, AddressOf HeaderBackColorChangedHandler
   AddHandler myTableStyle.HeaderForeColorChanged, AddressOf HeaderForeColorChangedHandler
End Sub 'Create_Table


' Change header background color.
Private Sub OnHeaderBackColor_Click(sender As Object, e As System.EventArgs) Handles button1.Click
   dataGrid1.TableStyles.Clear()
   Select Case comboBox1.SelectedItem.ToString()
      Case "Red"
         myTableStyle.HeaderBackColor = Color.Red
      Case "Yellow"
         myTableStyle.HeaderBackColor = Color.Yellow
      Case "Blue"
         myTableStyle.HeaderBackColor = Color.Blue
   End Select
   myTableStyle.AlternatingBackColor = Color.LightGray
   dataGrid1.TableStyles.Add(myTableStyle)
End Sub 'OnHeaderBackColor_Click

  Private Sub HeaderBackColorChangedHandler(ByVal sender As Object, ByVal e As EventArgs)
      MessageBox.Show("Changed Header Background color to : " + comboBox1.SelectedItem.ToString(), "Success", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
  End Sub 'HeaderBackColorChangedHandler

' Change header forecolor.
Private Sub OnHeaderForeColor_Click(sender As Object, e As System.EventArgs) Handles button2.Click
   dataGrid1.TableStyles.Clear()
   Select Case comboBox2.SelectedItem.ToString()
      Case "Green"
         myTableStyle.HeaderForeColor = Color.Green
      Case "White"
         myTableStyle.HeaderForeColor = Color.White
      Case "Violet"
         myTableStyle.HeaderForeColor = Color.Violet
   End Select
   myTableStyle.AlternatingBackColor = Color.LightGray
   dataGrid1.TableStyles.Add(myTableStyle)
End Sub 'OnHeaderForeColor_Click

  Private Sub HeaderForeColorChangedHandler(ByVal sender As Object, ByVal e As EventArgs)
      MessageBox.Show("Changed Header Fore color to : " + comboBox2.SelectedItem.ToString(), "Success", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
  End Sub 'HeaderForeColorChangedHandler

private void Create_Table()
{
   // Create DataSet.
   myDataSet = new DataSet("myDataSet");
   // Create DataTable.
   DataTable myCustomerTable = new DataTable("Customers");
   // Create two columns, and add them to the table.
   DataColumn CustID = new DataColumn("CustID", typeof(int));
   DataColumn CustName = new DataColumn("CustName");
   myCustomerTable.Columns.Add(CustID);
   myCustomerTable.Columns.Add(CustName);
   // Add table to DataSet.
   myDataSet.Tables.Add(myCustomerTable);
   dataGrid1.SetDataBinding(myDataSet,"Customers");
   myTableStyle = new DataGridTableStyle();
   myTableStyle.MappingName = "Customers";
   myTableStyle.HeaderBackColorChanged += 
      new System.EventHandler(HeaderBackColorChangedHandler); 
   myTableStyle.HeaderForeColorChanged +=
      new System.EventHandler(HeaderForeColorChangedHandler); 
}

// Change header background color.
private void OnHeaderBackColor_Click(object sender, System.EventArgs e)
{
   dataGrid1.TableStyles.Clear ();
   switch(comboBox1.SelectedItem.ToString())
   {
      case "Red":
         myTableStyle.HeaderBackColor = Color.Red;
         break;
      case "Yellow":
         myTableStyle.HeaderBackColor = Color.Yellow ;
         break;
      case "Blue":
         myTableStyle.HeaderBackColor = Color.Blue ;
         break;
   }
   myTableStyle.AlternatingBackColor = Color.LightGray;
   dataGrid1.TableStyles.Add(myTableStyle);
}

private void HeaderBackColorChangedHandler(object sender,EventArgs e)
{
   MessageBox.Show("Changed Header Background color to : " + 
   comboBox1.SelectedItem.ToString(),"Success", MessageBoxButtons.OK, 
   MessageBoxIcon.Exclamation);
}

// Change header forecolor.
private void OnHeaderForeColor_Click(object sender, System.EventArgs e)
{
   dataGrid1.TableStyles.Clear();
   switch(comboBox2.SelectedItem.ToString())
   {
      case "Green":
         myTableStyle.HeaderForeColor = Color.Green;
         break;
      case "White":
         myTableStyle.HeaderForeColor = Color.White;
         break;
      case "Violet":
         myTableStyle.HeaderForeColor = Color.Violet;
         break;
   }
   myTableStyle.AlternatingBackColor = Color.LightGray;
   dataGrid1.TableStyles.Add(myTableStyle);
}

private void HeaderForeColorChangedHandler(object sender,EventArgs e)
{
   MessageBox.Show("Changed Header Fore color to : " + 
   comboBox2.SelectedItem.ToString(), "Success",
   MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}

private:
   void Create_Table()
   {
      // Create DataSet.
      myDataSet = gcnew DataSet( "myDataSet" );

      // Create DataTable.
      DataTable^ myCustomerTable = gcnew DataTable( "Customers" );

      // Create two columns, and add them to the table.
      DataColumn^ CustID = gcnew DataColumn( "CustID",int::typeid );
      DataColumn^ CustName = gcnew DataColumn( "CustName" );
      myCustomerTable->Columns->Add( CustID );
      myCustomerTable->Columns->Add( CustName );

      // Add table to DataSet.
      myDataSet->Tables->Add( myCustomerTable );
      dataGrid1->SetDataBinding( myDataSet, "Customers" );
      myTableStyle = gcnew DataGridTableStyle;
      myTableStyle->MappingName = "Customers";
      myTableStyle->HeaderBackColorChanged += gcnew System::EventHandler( this, &Form1::HeaderBackColorChangedHandler );
      myTableStyle->HeaderForeColorChanged += gcnew System::EventHandler( this, &Form1::HeaderForeColorChangedHandler );
   }

   // Change header background color.
   void OnHeaderBackColor_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      dataGrid1->TableStyles->Clear();
      String^ str = dynamic_cast<String^>(comboBox1->SelectedItem);
      if ( str->Equals( "Red" ) )
               myTableStyle->ForeColor = Color::Red;
      else
      if ( str->Equals( "Yellow" ) )
               myTableStyle->ForeColor = Color::Yellow;
      else
      if ( str->Equals( "Blue" ) )
               myTableStyle->ForeColor = Color::Blue;

      myTableStyle->AlternatingBackColor = Color::LightGray;
      dataGrid1->TableStyles->Add( myTableStyle );
   }

   void HeaderBackColorChangedHandler( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      MessageBox::Show( String::Concat( "Changed Header Background color to : ", comboBox1->SelectedItem ), "Success", MessageBoxButtons::OK, MessageBoxIcon::Exclamation );
   }

   // Change header forecolor.
   void OnHeaderForeColor_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      dataGrid1->TableStyles->Clear();
      String^ str = dynamic_cast<String^>(comboBox1->SelectedItem);
      if ( str->Equals( "Green" ) )
               myTableStyle->ForeColor = Color::Green;
      else
      if ( str->Equals( "White" ) )
               myTableStyle->ForeColor = Color::White;
      else
      if ( str->Equals( "Violet" ) )
               myTableStyle->ForeColor = Color::Violet;

      myTableStyle->AlternatingBackColor = Color::LightGray;
      dataGrid1->TableStyles->Add( myTableStyle );
   }

   void HeaderForeColorChangedHandler( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      MessageBox::Show( String::Concat( "Changed Header Fore color to : ", comboBox2->SelectedItem ), "Success", MessageBoxButtons::OK, MessageBoxIcon::Exclamation );
   }

private void Create_Table()
{
    // Create DataSet.
    myDataSet = new DataSet("myDataSet");

    // Create DataTable.
    DataTable myCustomerTable = new DataTable("Customers");

    // Create two columns, and add them to the table.
    DataColumn custID = new DataColumn("CustID", int.class.ToType());
    DataColumn custName = new DataColumn("CustName");

    myCustomerTable.get_Columns().Add(custID);
    myCustomerTable.get_Columns().Add(custName);

    // Add table to DataSet.
    myDataSet.get_Tables().Add(myCustomerTable);
    dataGrid1.SetDataBinding(myDataSet, "Customers");
    myTableStyle = new DataGridTableStyle();
    myTableStyle.set_MappingName("Customers");
    myTableStyle.add_HeaderBackColorChanged(
        new System.EventHandler(HeaderBackColorChangedHandler));
    myTableStyle.add_HeaderForeColorChanged(
        new System.EventHandler(HeaderForeColorChangedHandler));
} //Create_Table

// Change header background color.
private void OnHeaderBackColor_Click(Object sender, System.EventArgs e)
{
    dataGrid1.get_TableStyles().Clear();
    if (comboBox1.get_SelectedItem().ToString().Equals("Red")) {
        myTableStyle.set_HeaderBackColor(Color.get_Red());
    }
    else if (comboBox1.get_SelectedItem().ToString().Equals("Yellow")) {
        myTableStyle.set_HeaderBackColor(Color.get_Yellow());
    }
    else if (comboBox1.get_SelectedItem().ToString().Equals("Blue")) {
        myTableStyle.set_HeaderBackColor(Color.get_Blue());
    }
    myTableStyle.set_AlternatingBackColor(Color.get_LightGray());
    dataGrid1.get_TableStyles().Add(myTableStyle);
} //OnHeaderBackColor_Click

void HeaderBackColorChangedHandler(Object sender, EventArgs e)
{
    MessageBox.Show("Changed Header Background color to : " 
        + comboBox1.get_SelectedItem().ToString(), "Success", 
        MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
} //HeaderBackColorChangedHandler

// Change header forecolor.
private void OnHeaderForeColor_Click(Object sender, System.EventArgs e)
{
    dataGrid1.get_TableStyles().Clear();
    if (comboBox2.get_SelectedItem().ToString().Equals("Green")) {
        myTableStyle.set_HeaderForeColor(Color.get_Green());
    }
    else if (comboBox2.get_SelectedItem().ToString().Equals("White")) {
        myTableStyle.set_HeaderForeColor(Color.get_White());
    }
    else if (comboBox2.get_SelectedItem().ToString().Equals("Violet")) {
        myTableStyle.set_HeaderForeColor(Color.get_Violet());
    }
    myTableStyle.set_AlternatingBackColor(Color.get_LightGray());
    dataGrid1.get_TableStyles().Add(myTableStyle);
} //OnHeaderForeColor_Click

void HeaderForeColorChangedHandler(Object sender, EventArgs e)
{
    MessageBox.Show("Changed Header Fore color to : " 
        + comboBox2.get_SelectedItem().ToString(), "Success", 
        MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
} //HeaderForeColorChangedHandler

平台

Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、Windows Mobile for Smartphone、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

DataGridTableStyle 类
DataGridTableStyle 成员
System.Windows.Forms 命名空间
DataGridTableStyle.HeaderForeColor 属性
DataGridTableStyle.HeaderBackColor 属性
ShouldSerializeHeaderForeColor
ResetHeaderForeColor
DataGridTableStyle.ColumnHeadersVisible 属性
DataGridTableStyle.HeaderFont 属性