Redirect a Response on a Callback Exception

• Dec 27, 2023

When a callback exception occurs, you can redirect the application to another web resource in the following ways:

• Use the Web.config’s callbackErrorRedirectUrl option to specify a page where the response is redirected.

• Use the static CallbackError event to delegate callback exception handling to the Application_Error event handler. In the handler, call the RedirectOnCallback(String) method to redirect the application to another web resource.

On the redirection page, you can call the static GetCallbackErrorMessage() method to obtain exception-related information.

• Error.aspx.cs
• Error.aspx.vb

public partial class Error : Page {
    protected void Page_Load(object sender, EventArgs e) {
        string errorMessage = ASPxWebControl.GetCallbackErrorMessage();
        Response.Output.Write(errorMessage);
    }
}

Public Partial Class [Error]
    Inherits Page
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
        Dim errorMessage As String = ASPxWebControl.GetCallbackErrorMessage()
        Response.Output.Write(errorMessage)
    End Sub
End Class

See Also

Callbacks