DataGridColumnStyle.HeaderTextChanged 事件

在 HeaderText 属性值更改时发生。

**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 HeaderTextChanged As EventHandler
用法
Dim instance As DataGridColumnStyle
Dim handler As EventHandler

AddHandler instance.HeaderTextChanged, handler

public event EventHandler HeaderTextChanged

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

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

/** @event */
public void remove_HeaderTextChanged (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 AddCustomDataTableStyle()
   Dim myTableStyle As New DataGridTableStyle()
   ' Map DataGridTableStyle to a DataTable.
   myTableStyle.MappingName = "Orders"
   ' Get CurrencyManager object.
   Dim myCurrencyManager As CurrencyManager = CType(BindingContext(myDataSet, "Orders"), CurrencyManager)
   ' Use the CurrencyManager to get the PropertyDescriptor for the column.
   Dim myPropertyDescriptor As PropertyDescriptor = myCurrencyManager.GetItemProperties()("Amount")
   ' Change the HeaderText.
   Dim myColumnStyle As DataGridTextBoxColumn = New DataGridTextBoxColumn(myPropertyDescriptor, "c", True)
   ' Attach a event handler function with the 'HeaderTextChanged' event.
   AddHandler myColumnStyle.HeaderTextChanged, AddressOf MyHeaderText_Changed
   myColumnStyle.Width = 130
   myColumnStyle.HeaderText = "Amount in $"
   myTableStyle.GridColumnStyles.Add(myColumnStyle)
   myDataGrid.TableStyles.Add(myTableStyle)
   TablesAlreadyAdded = True
End Sub 'AddCustomDataTableStyle

 Private Sub MyHeaderText_Changed(ByVal sender As Object, ByVal e As EventArgs)
     myLabel.Text = "Header Descriptor Property of DataGridColumnStyle has changed"
 End Sub 'MyHeaderText_Changed

private void AddCustomDataTableStyle()
{
   DataGridTableStyle myTableStyle = new DataGridTableStyle();
   // Map DataGridTableStyle to a DataTable.
   myTableStyle.MappingName = "Orders";
   // Get CurrencyManager object.
   CurrencyManager myCurrencyManager = (CurrencyManager)BindingContext[myDataSet,"Orders"];
   // Use the CurrencyManager to get the PropertyDescriptor for the column.
   PropertyDescriptor myPropertyDescriptor = myCurrencyManager.GetItemProperties()["Amount"];
   // Change the HeaderText.
   DataGridColumnStyle myColumnStyle = new DataGridTextBoxColumn(myPropertyDescriptor,"c",true);
   // Attach a event handler function with the 'HeaderTextChanged' event.
   myColumnStyle.HeaderTextChanged+=new EventHandler(MyHeaderText_Changed);
   myColumnStyle.Width=130;
   myColumnStyle.HeaderText="Amount in $";
   myTableStyle.GridColumnStyles.Add(myColumnStyle);
   myDataGrid.TableStyles.Add(myTableStyle);
   TablesAlreadyAdded=true;
}

private void MyHeaderText_Changed(object sender,EventArgs e)
{
   myLabel.Text="Header Descriptor Property of DataGridColumnStyle has changed";
}

private:
   void AddCustomDataTableStyle()
   {
      DataGridTableStyle^ myTableStyle = gcnew DataGridTableStyle;
      
      // Map DataGridTableStyle to a DataTable.
      myTableStyle->MappingName = "Orders";
      
      // Get CurrencyManager Object*.
      CurrencyManager^ myCurrencyManager = dynamic_cast<CurrencyManager^>(BindingContext[myDataSet, "Orders"]);
      
      // Use the CurrencyManager to get the PropertyDescriptor for the column.
      PropertyDescriptor^ myPropertyDescriptor = myCurrencyManager->GetItemProperties()[ "Amount" ];
      
      // Change the HeaderText.
      DataGridColumnStyle^ myColumnStyle = gcnew DataGridTextBoxColumn( myPropertyDescriptor,"c",true );
      
      // Attach a event handler function with the 'HeaderTextChanged' event.
      myColumnStyle->HeaderTextChanged += gcnew EventHandler( this, &myDataForm::MyHeaderText_Changed );
      myColumnStyle->Width = 130;
      myColumnStyle->HeaderText = "Amount in $";
      myTableStyle->GridColumnStyles->Add( myColumnStyle );
      myDataGrid->TableStyles->Add( myTableStyle );
      TablesAlreadyAdded = (bool *)true;
   }

   void MyHeaderText_Changed( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      myLabel->Text = "Header Descriptor Property of DataGridColumnStyle has changed";
   }

private void AddCustomDataTableStyle()
{
    DataGridTableStyle myTableStyle = new DataGridTableStyle();

    // Map DataGridTableStyle to a DataTable.
    myTableStyle.set_MappingName("Orders");

    // Get CurrencyManager object.
    CurrencyManager myCurrencyManager = (CurrencyManager) 
        get_BindingContext().get_Item(myDataSet, "Orders");

    // Use the CurrencyManager to get the PropertyDescriptor for the column.
    PropertyDescriptor myPropertyDescriptor = 
        myCurrencyManager.GetItemProperties().get_Item("Amount");

    // Change the HeaderText.
    DataGridColumnStyle myColumnStyle = 
        new DataGridTextBoxColumn(myPropertyDescriptor, "c", true);

    // Attach a event handler function with the 'HeaderTextChanged' event.
    myColumnStyle.add_HeaderTextChanged(new EventHandler(
        MyHeaderText_Changed));
    myColumnStyle.set_Width(130);
    myColumnStyle.set_HeaderText("Amount in $");
    myTableStyle.get_GridColumnStyles().Add(myColumnStyle);
    myDataGrid.get_TableStyles().Add(myTableStyle);
    tablesAlreadyAdded = true;
} //AddCustomDataTableStyle

void MyHeaderText_Changed(Object sender, EventArgs e)
{
    myLabel.set_Text("Header Descriptor Property of DataGridColumnStyle " 
        + "has changed");
} //MyHeaderText_Changed

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

DataGridColumnStyle 类
DataGridColumnStyle 成员
System.Windows.Forms 命名空间