LinqDataSourceUpdateEventArgs.ExceptionHandled Property
Definition
Important
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Gets or sets a value that indicates whether the exception was handled and that it should not be thrown again.
public:
property bool ExceptionHandled { bool get(); void set(bool value); };public bool ExceptionHandled { get; set; }member this.ExceptionHandled : bool with get, setPublic Property ExceptionHandled As BooleanProperty Value
true if the exception was handled; otherwise, false.
Examples
The following example shows an event handler for the Updating event. It displays any validation exception messages by using a Label control.
Protected Sub LinqDataSource_Updating(ByVal sender As Object, _
ByVal e As LinqDataSourceUpdateEventArgs)
If (e.Exception IsNot Nothing) Then
For Each innerException As KeyValuePair(Of String, Exception) _
In e.Exception.InnerExceptions
Label1.Text &= innerException.Key & ": " & _
innerException.Value.Message & "<br />"
Next
e.ExceptionHandled = True
End If
End Sub
protected void LinqDataSource_Updating(object sender,
LinqDataSourceUpdateEventArgs e)
{
if (e.Exception != null)
{
foreach (KeyValuePair<string, Exception> innerException in
e.Exception.InnerExceptions)
{
Label1.Text += innerException.Key + ": " +
innerException.Value.Message + "<br />";
}
e.ExceptionHandled = true;
}
}
Remarks
You can create an event handler for the Updating event to examine validation exceptions that occurred before the update operation. If you handle the exception and do not want it to be thrown again, set the ExceptionHandled property to true. If you do not set the ExceptionHandled property to true, the exception will be propagated to the next event handler in the call stack.
