ControlError Event

Topic Last Modified: 2006-06-13

The ControlError Event is used for returning low-priority error information, for example, when an attempt is made to create folders or roots with duplicate names in the TreeView control.

Applies To

ExchangeTreeViewControl Class

Event Data

The event handler receives a ControlEventArgs object as an argument containing data related to this event. The following properties provide information specific to this event.

Property	Description
ErrorConstant Property	The error constant. For more information, see LocalizableErrors Enumeration.
ErrorContext Property	A string that identifies the context of the error. Usually the control or method in which the error occurred.
ErrorText Property	The error message.

Examples

Visual Basic .NET

The following is an example of a ControlError event handler in Microsoft® Visual Basic® .NET.

Private Sub OnControlError(ByVal o As Object, ByVal e As EventArgs) _
    Handles treeView.ControlError

     ' Declare the ControlEventArgs object.
     Dim evtArgs As ControlEventArgs

     ' Cast e to a ControlEventArgs object.
     evtArgs = CType(e, ControlEventArgs)

     Debug.WriteLine("Error text: " + evtArgs.ErrorText)
     Debug.WriteLine("Error constant: " + evtArgs.ErrorConstant)
     Debug.WriteLine("Context: " + evtArgs.ErrorContext)
End Sub

C#

The following is an example of a ControlError event handler in Microsoft C#.

void OnControlError(object o, EventArgs e )
{
     // Cast e to a ControlEventArgs object.
     ControlEventArgs evtArgs = (ControlEventArgs)e;

     Debug.WriteLine("Error text: " + evtArgs.ErrorText);
     Debug.WriteLine("Error constant: " + evtArgs.ErrorConstant);
     Debug.WriteLine("Context: " + evtArgs.ErrorContext);
}