Namespace:
System.ComponentModel
Assembly:
System (in System.dll)
Visual Basic (Declaration)
Public Event ProgressChanged As ProgressChangedEventHandler
Dim instance As BackgroundWorker
Dim handler As ProgressChangedEventHandler
AddHandler instance.ProgressChanged, handler
public event ProgressChangedEventHandler ProgressChanged
public:
event ProgressChangedEventHandler^ ProgressChanged {
void add (ProgressChangedEventHandler^ value);
void remove (ProgressChangedEventHandler^ value);
}
JScript does not support events.
This event is raised when you call the ReportProgress method.
For more information about handling events, see Consuming Events.
The following code example demonstrates the use of the ProgressChanged event to report the progress of an asynchronous operation to the user. This code example is part of a larger example provided for the BackgroundWorker class.
' This event handler updates the progress bar.
Private Sub backgroundWorker1_ProgressChanged( _
ByVal sender As Object, ByVal e As ProgressChangedEventArgs) _
Handles backgroundWorker1.ProgressChanged
Me.progressBar1.Value = e.ProgressPercentage
End Sub
// This event handler updates the progress bar.
private void backgroundWorker1_ProgressChanged(object sender,
ProgressChangedEventArgs e)
{
this.progressBar1.Value = e.ProgressPercentage;
}
// This event handler updates the progress bar.
void backgroundWorker1_ProgressChanged( Object^ /*sender*/, ProgressChangedEventArgs^ e )
{
this->progressBar1->Value = e->ProgressPercentage;
}
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0
Reference
Other Resources