For now I'll just leave out calling it during the entry and only call it when saved. Which will lead up to my next question:

How to get the error icon to show up in the grid next to the label? But, I'll see what I can work out before asking this in a separate thread.

>I was not able to duplicate the same error as you have. If it was me, I would just do this check without using the rules object for now because it isn't a validation for save anyway. I will look at it further when I get a chance and let you know if I find anything.
>Tim
>
>>Tim,
>>
>>did you have a go at duplicating this?
>>
>>>I just copied your code and I am going to test this in my application to see what is happening.
>>>Tim
>>>
>>>>
>>>>I've tried it like this, but I still get the same error :(
>>>>
>>>>Here's my actual code:
>>>>
>>>>in my PolicyRider.Partial.cs:
>>>>
>>>>

        public string ValidateSumAssuredMaxMin(Guid? planPK, decimal? sumAssured)
>>>>        {
>>>>            // Get the Plan for the specified PlanPK
>>>>            Plan oPlan = new Plan();
>>>>            oPlan.GetPlanByPlanPK((Guid)planPK);
>>>>
>>>>            // Call the validate method in the Rules object
>>>>            return this.Rules.ValidateSumAssuredMaxMin(sumAssured, oPlan.Entity.MinSumAssured, oPlan.Entity.MaxSumAssured);
>>>>
>>>>        }

>>>>
>>>>In my PolicyRiderRules.Partial.cs:
>>>>
>>>>

        public string ValidateSumAssuredMaxMin(Decimal? sumAssured, Decimal? min, Decimal? max)
>>>>        {
>>>>            string message = null;
>>>>            // check that the sum assured meets the min and max sum assured requirements
>>>>            if (min > (Decimal)sumAssured
>>>>                    || max < (Decimal)sumAssured)
>>>>            {
>>>>                message = "Rider Sum Assured must be between " + min.ToString() + " and " + max.ToString();
>>>>                this.AddErrorProviderBrokenRule("SumAssured", message);
>>>>            }
>>>>            return message;
>>>>        }

>>>>
>>>>In my PolicyEdit.aspx.cs:
>>>>
>>>>

        protected void txtRiderSumAssured_TextChanged(object sender, EventArgs e)
>>>>        {
>>>>            TextBox thisTextBox = (TextBox)sender;
>>>>            this.oPolicyRider.Rules.ClearAll();
>>>>            GridViewRow gvr = (GridViewRow)thisTextBox.Parent.Parent;
>>>>            if (this.oPolicyRider.ValidateSumAssuredMaxMin((Guid)this.oPolicyRider.DataSet.Tables[0].Rows[gvr.RowIndex]["RiderFK"], decimal.Parse(thisTextBox.Text)) != null)
>>>>            {
>>>>                // show the message somehow
>>>>            }
>>>>
>>>>            this.CalculateRiderPremium(true, gvr);
>>>>            this.SetFocus(gvr.Cells[3].Controls[1]);
>>>>        }