>>>>>Hi,
>>>>>
>>>>>I've got an ASP.NET form with an mmGridView showing the many side of a one to many relationship between two tables. When a value in this grid is changed to one that causes a business rule to fail the error icon does not get displayed in the grid. How can I achieve this?
>>>>
>>>>Am I doing something out of the norm here that no one has encountered this?
>>>
>>>Hi Frank,
>>>
>>>I don't think so and I have had others with this challenge. To be honest, editing in a grid can be complicated real easy. I rarely do it only because I don't like dealing with editing in grids. I prefer to provide editing forms. How do you have your in place editing setup? Are you using edit templates?
>>>Tim
>>
>>So you display a separate web page when the user edits each row of the many side of a one to many relationship?.
>
>Not necessarily. Since I am using Telerik, I can use a User Control form within the grid. Check these out.
>http://demos.telerik.com/aspnet-ajax/grid/examples/dataediting/usercontroleditform/defaultcs.aspx
>
>>
>>Yes I am using item and edit item templates in the grid
>Then if the save fails are you preventing the edit mode from finishing?
>
>

>protected void grdStuff_UpdateCommand(object source, GridCommandEventArgs e)
>{
>     // Get your dataset back and do whatever work you need to do before the save
>     //
>     // See if the data gets saved and check for broken rules.
>     if(this.Save(this.oBizObj, dsMyData)  ==  mmSaveDataResult.RulesBroken)
>     {
>           e.Canceled = true;
>           e.Item.Edit = true;
>     }
>     //  Reset the edited item and rebind
>     this.grdStuff.ItemIndex = -1;
>}
>

Tim,

I just had a look at the telerik demo. Does that mean that in a one to many situation you let the user edit the many side, and then save just that record? What happens if the user makes a change on the many side and saves it, then wants to discard the overall changes?