DataGridColumnStyle.PropertyDescriptorChanged-Ereignis

Tritt ein, wenn sich der PropertyDescriptor-Eigenschaftenwert ändert.

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

Syntax

'Declaration
Public Event PropertyDescriptorChanged As EventHandler
'Usage
Dim instance As DataGridColumnStyle
Dim handler As EventHandler

AddHandler instance.PropertyDescriptorChanged, handler

public event EventHandler PropertyDescriptorChanged

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

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

/** @event */
public void remove_PropertyDescriptorChanged (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 myButton_Click(ByVal sender As Object, ByVal e As EventArgs)
     If TablesAlreadyAdded Then
         Return
     End If
     AddCustomDataTableStyle()
 End Sub 'myButton_Click

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 column.
   Dim myPropertyDescriptor As PropertyDescriptor = myCurrencyManager.GetItemProperties()("Amount")
   ' Construct a 'DataGridColumnStyle' object changing its format to 'Currency'.
   Dim myColumnStyle As DataGridTextBoxColumn = New DataGridTextBoxColumn(myPropertyDescriptor, "c", True)
   ' Add EventHandler function for PropertyDescriptorChanged Event.
   AddHandler myColumnStyle.PropertyDescriptorChanged, AddressOf MyPropertyDescriptor_Changed
   myTableStyle.GridColumnStyles.Add(myColumnStyle)
   ' Add the DataGridTableStyle instance to the GridTableStylesCollection.
   myDataGrid.TableStyles.Add(myTableStyle)
   TablesAlreadyAdded = True
End Sub 'AddCustomDataTableStyle

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

private void myButton_Click(object sender, EventArgs e)
{
   if(TablesAlreadyAdded) 
   {
      return;
   }
   AddCustomDataTableStyle();
}
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 column.
   PropertyDescriptor myPropertyDescriptor = myCurrencyManager.GetItemProperties()["Amount"];
   // Construct a 'DataGridColumnStyle' object changing its format to 'Currency'.
   DataGridColumnStyle myColumnStyle =  new DataGridTextBoxColumn(myPropertyDescriptor,"c",true);
   // Add EventHandler function for PropertyDescriptorChanged Event.
   myColumnStyle.PropertyDescriptorChanged+=new System.EventHandler(MyPropertyDescriptor_Changed);
   myTableStyle.GridColumnStyles.Add(myColumnStyle);
   // Add the DataGridTableStyle instance to the GridTableStylesCollection. 
   myDataGrid.TableStyles.Add(myTableStyle);
   TablesAlreadyAdded=true;
}
private void MyPropertyDescriptor_Changed(object sender,EventArgs e)
{
   myLabel.Text="Property Descriptor Property of DataGridColumnStyle has changed";
}

private:
   void myButton_Click( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      if ( TablesAlreadyAdded )
      {
         return;
      }

      AddCustomDataTableStyle();
   }

   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 column.
      PropertyDescriptor^ myPropertyDescriptor = myCurrencyManager->GetItemProperties()[ "Amount" ];
      
      // Construct a 'DataGridColumnStyle' object changing its format to 'Currency'.
      DataGridColumnStyle^ myColumnStyle = gcnew DataGridTextBoxColumn( myPropertyDescriptor,"c",true );
      
      // Add EventHandler function for PropertyDescriptorChanged Event.
      myColumnStyle->PropertyDescriptorChanged += gcnew System::EventHandler( this, &myDataForm::MyPropertyDescriptor_Changed );
      myTableStyle->GridColumnStyles->Add( myColumnStyle );
      
      // Add the DataGridTableStyle instance to the GridTableStylesCollection.
      myDataGrid->TableStyles->Add( myTableStyle );
      TablesAlreadyAdded = true;
   }

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

protected void myButton_Click(Object sender, EventArgs e)
{
    if (TablesAlreadyAdded) {
        return;
    }
    AddCustomDataTableStyle();
} //myButton_Click

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 column.
    PropertyDescriptor myPropertyDescriptor = 
        myCurrencyManager.GetItemProperties().get_Item("Amount");

    // Construct a 'DataGridColumnStyle' object changing its format to 
    // 'Currency'.
    DataGridColumnStyle myColumnStyle = 
        new DataGridTextBoxColumn(myPropertyDescriptor, "c", true);

    // Add EventHandler function for PropertyDescriptorChanged Event.
    myColumnStyle.add_PropertyDescriptorChanged(new System.EventHandler(
        MyPropertyDescriptorChanged));
    myTableStyle.get_GridColumnStyles().Add(myColumnStyle);

    // Add the DataGridTableStyle instance to the GridTableStylesCollection. 
    myDataGrid.get_TableStyles().Add(myTableStyle);
    TablesAlreadyAdded = true;
} //AddCustomDataTableStyle

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

protected void myButton_Click(Object sender, EventArgs e)
{
    if(TablesAlreadyAdded) {
        return;
    }
    AddCustomDataTableStyle();
} //myButton_Click

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 column.
    PropertyDescriptor myPropertyDescriptor = myCurrencyManager.
        GetItemProperties().get_Item("Amount");

    // Construct a 'DataGridColumnStyle' object changing its format to 
    // 'Currency'.
    DataGridColumnStyle myColumnStyle = 
        new DataGridTextBoxColumn(myPropertyDescriptor, "c", true);

    // Add EventHandler function for PropertyDescriptorChanged Event.
    myColumnStyle.add_PropertyDescriptorChanged(new System.
        EventHandler(MyPropertyDescriptorChanged));
    myTableStyle.get_GridColumnStyles().Add(myColumnStyle);

    // Add the DataGridTableStyle instance to the 
    // GridTableStylesCollection. 
    myDataGrid.get_TableStyles().Add(myTableStyle);
    TablesAlreadyAdded = true;
} //AddCustomDataTableStyle

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

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