protected void btnUpdateCustomer_Click(object sender, EventArgs e)
    {
        //Creates a boolean to false if the update creates an error
        bool customerUpdateError = false;

        //accesses Accounts.mdb database for the clsDataLayer
        string       tempPath    = Server.MapPath("Accounts.mdb");
        clsDataLayer myDataLayer = new clsDataLayer(tempPath);

        //Updates Customer Information for all fields
        try
        {
            myDataLayer.UpdateCustomer(txtUserName.Text, txtCity.Text, txtState.Text, txtLeastLanguage.Text, txtFavoriteLanguage.Text);
        }
        catch (Exception error)
        {
            customerUpdateError = true;
            string message = "Error updating customer, please check form data. ";
            Master.UserProgrammer.Text = message + error.Message;
        }

        if (!customerUpdateError)
        {
            ClearInputs(Page.Controls);
            Master.UserProgrammer.Text = "Customer Updated Successfully";
        }

        //Binds CustomerGridView()
        BindCustomerGridView();
    }