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PropertyChanged Event
See Also  Example
Leadtools.Web.Controls Namespace > WebThumbnailViewer Class : PropertyChanged Event




Notifies clients that a property value has changed.

Syntax

Visual Basic (Declaration) 
Public Event PropertyChanged() As PropertyChangedEventHandler
Visual Basic (Usage)Copy Code
Dim instance As WebThumbnailViewer
Dim handler As PropertyChangedEventHandler
 
AddHandler instance.PropertyChanged, handler
C# 
public event PropertyChangedEventHandler PropertyChanged()
Managed Extensions for C++ 
public: __event PropertyChangedEventHandler PropertyChanged();
C++/CLI 
public:
event PropertyChangedEventHandler PropertyChanged();

Example

This example handles the PropertyChanged event.

Visual BasicCopy Code
Public Sub WebImageViewer_PropertyChanged(ByVal webThumbnailViewer As WebThumbnailViewer)
   AddHandler webThumbnailViewer.PropertyChanged, New System.ComponentModel.PropertyChangedEventHandler(AddressOf webThumbnailViewer_PropertyChanged)
End Sub

Sub webThumbnailViewer_PropertyChanged(ByVal sender As Object, ByVal e As System.ComponentModel.PropertyChangedEventArgs)

   If (e.PropertyName = "SelectedIndex") Then

      ' SelectedIndex property changed.

   ElseIf (e.PropertyName = "Rows") Then
      ' Rows property changed.

      '
      'etc.
      '
   End If
End Sub
C#Copy Code
public void WebImageViewer_PropertyChanged(WebThumbnailViewer webThumbnailViewer) 
{ 
   webThumbnailViewer.PropertyChanged += new System.ComponentModel.PropertyChangedEventHandler(webThumbnailViewer_PropertyChanged); 
} 
void webThumbnailViewer_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e) 
{ 
   if(e.PropertyName == "SelectedIndex") 
   { 
      // SelectedIndex property changed. 
   } 
   else if(e.PropertyName == "Rows") 
   { 
      // Rows property changed. 
   } 
   // 
   //etc. 
   // 
}

Remarks

The PropertyChanged event can indicate all properties on the object have changed by using either a null reference (Nothing in Visual Basic) or String.Empty as the property name in the PropertyChangedEventArgs.

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also