Session changes done in application_Error rolled back after redirect

Question

I have an asp.net application and I am trying to handle custom exception using Application_Error. It works nicely but I have new requirement to set the error data in Session obj

Answer 1

You could use the Cache and an appropriate naming strategy for your key, like this:

protected void Application_Error(object sender, EventArgs e)
    {
        HttpContext.Current.Cache["error:" + Session.SessionID] = Server.GetLastError();
        Response.Redirect("Error.aspx");
    }

in the Error.aspx page you ca read it like this:

var error = Cache["error:" + Session.SessionID];