DataGrid.ParentRowsLabelStyleChanged 事件

在更改父行的标签样式时发生。

**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 ParentRowsLabelStyleChanged As EventHandler
用法
Dim instance As DataGrid
Dim handler As EventHandler

AddHandler instance.ParentRowsLabelStyleChanged, handler

public event EventHandler ParentRowsLabelStyleChanged

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

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

/** @event */
public void remove_ParentRowsLabelStyleChanged (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 CallParentRowsLabelStyleChanged()
   AddHandler myDataGrid.ParentRowsLabelStyleChanged, AddressOf _
                                        DataGridParentRowsLabelStyleChanged_Clicked
End Sub 'CallParentRowsLabelStyleChanged


' Set the 'ParentRowsLabelStyle' property on click of a button.
 Private Sub ToggleStyle_Clicked(ByVal sender As Object, ByVal e As EventArgs)
     If myDataGrid.ParentRowsLabelStyle.ToString() = "Both" Then
         myDataGrid.ParentRowsLabelStyle = DataGridParentRowsLabelStyle.TableName
     Else
         myDataGrid.ParentRowsLabelStyle = DataGridParentRowsLabelStyle.Both
     End If
 End Sub 'ToggleStyle_Clicked

 ' raise the event when 'ParentRowsLabelStyle' property is changed.
 Private Sub DataGridParentRowsLabelStyleChanged_Clicked(ByVal sender As Object, ByVal e As EventArgs)
     Dim myMessage As String = "ParentRowsLabelStyleChanged event raised, LabelStyle is : "
     ' Get the state of 'ParentRowsLabelStyle' property.
     Dim myLabelStyle As String = myDataGrid.ParentRowsLabelStyle.ToString()
     myMessage += myLabelStyle

     MessageBox.Show(myMessage, "ParentRowsLabelStyle information")
 End Sub 'DataGridParentRowsLabelStyleChanged_Clicked

private void CallParentRowsLabelStyleChanged()
{
   myDataGrid.ParentRowsLabelStyleChanged +=
      new EventHandler(DataGridParentRowsLabelStyleChanged_Clicked);
}

// Set the 'ParentRowsLabelStyle' property on click of a button.
private void ToggleStyle_Clicked(object sender, EventArgs e)
{
   if (myDataGrid.ParentRowsLabelStyle.ToString() == "Both")
      myDataGrid.ParentRowsLabelStyle = DataGridParentRowsLabelStyle.TableName;
   else
      myDataGrid.ParentRowsLabelStyle = DataGridParentRowsLabelStyle.Both;
}

// raise the event when 'ParentRowsLabelStyle' property is changed.
private void DataGridParentRowsLabelStyleChanged_Clicked(object sender, EventArgs e)
{
   string myMessage = "ParentRowsLabelStyleChanged event raised, LabelStyle is : ";
   // Get the state of 'ParentRowsLabelStyle' property.
   string myLabelStyle = myDataGrid.ParentRowsLabelStyle.ToString();
   myMessage += myLabelStyle;

   MessageBox.Show(myMessage, "ParentRowsLabelStyle information");
}

private:
   void CallParentRowsLabelStyleChanged()
   {
      myDataGrid->ParentRowsLabelStyleChanged += gcnew EventHandler( this, &MyForm::DataGridParentRowsLabelStyleChanged_Clicked );
   }

   // Set the 'ParentRowsLabelStyle' property on click of a button.
   void ToggleStyle_Clicked( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      if ( myDataGrid->ParentRowsLabelStyle.ToString()->Equals( "Both" ) )
            myDataGrid->ParentRowsLabelStyle = DataGridParentRowsLabelStyle::TableName;
      else
            myDataGrid->ParentRowsLabelStyle = DataGridParentRowsLabelStyle::Both;
   }

   // raise the event when 'ParentRowsLabelStyle' property is changed.
   void DataGridParentRowsLabelStyleChanged_Clicked( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      String^ myMessage = "ParentRowsLabelStyleChanged event raised, LabelStyle is : ";
      
      // Get the state of 'ParentRowsLabelStyle' property.
      String^ myLabelStyle = myDataGrid->ParentRowsLabelStyle.ToString();
      myMessage = String::Concat( myMessage, myLabelStyle );
      MessageBox::Show( myMessage, "ParentRowsLabelStyle information" );
   }

private void CallParentRowsLabelStyleChanged()
{
    myDataGrid.add_ParentRowsLabelStyleChanged(
        new EventHandler(DataGridParentRowsLabelStyleChanged_Clicked));
} //CallParentRowsLabelStyleChanged

// Set the 'ParentRowsLabelStyle' property on click of a button.
protected void ToggleStyle_Clicked(Object sender, EventArgs e)
{
    if (myDataGrid.get_ParentRowsLabelStyle().ToString().Equals("Both")) {
        myDataGrid.set_ParentRowsLabelStyle( 
            DataGridParentRowsLabelStyle.TableName);
    }
    else {
        myDataGrid.set_ParentRowsLabelStyle( 
            DataGridParentRowsLabelStyle.Both);
    }
} //ToggleStyle_Clicked

// raise the event when 'ParentRowsLabelStyle' property is changed.
protected void DataGridParentRowsLabelStyleChanged_Clicked(Object sender,
    EventArgs e)
{
    String myMessage = "ParentRowsLabelStyleChanged event raised, " 
        + "LabelStyle is : ";

    // Get the state of 'ParentRowsLabelStyle' property.
    String myLabelStyle = myDataGrid.get_ParentRowsLabelStyle().ToString();

    myMessage += myLabelStyle;
    MessageBox.Show(myMessage, "ParentRowsLabelStyle information");
} //DataGridParentRowsLabelStyleChanged_Clicked

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

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