Programming Forums - Null Reference Expeption... why?

Hi All,

I have a label on my aspx page and when I try to set the .Text property of if from the code behind file I get a null reference expeption....

Code behind file for form1

 catch (MySqlException mysqlx)

            {//<catch>

                showError show = new showError();

                show.printError(mysqlx.Message.ToString(), mysqlx.StackTrace.ToString());

            }//</catch>

Code behind file for form2

public partial class showError : System.Web.UI.Page

    {

        public void printError(string error, string trace)

        {

            Label2.Text = "xx";

        }

}