DataGridColumnStyle.HeaderTextChanged-Ereignis

Tritt ein, wenn sich der HeaderText-Eigenschaftenwert ändert.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

Syntax

'Declaration
Public Event HeaderTextChanged As EventHandler
'Usage
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 unterstützt die Verwendung von Ereignissen, aber nicht die Deklaration von neuen Ereignissen.

Hinweise

Weitere Informationen zum Behandeln von Ereignissen finden Sie unter Behandeln von Ereignissen.

Beispiel

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

Plattformen

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

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

Siehe auch

Referenz

DataGridColumnStyle-Klasse
DataGridColumnStyle-Member
System.Windows.Forms-Namespace