>Hi,
>
>I'm using Mere Mortals .NET 3.6 (not sure if that matters here or not).
>
>I've got an aspx page showing a header record and a gridview with child records displayed. I am using MM.Net's BOs but I think technically the gridview is bound to a dataset. When a value changes at the header level I need to recalculate some stuff in the child records and refresh the gridview. So I go through each datarow in the gridview's data set, recalculate one of the fields, then save the dataset to a session variable and do a GridView.DataBind().
>
>This does NOT show the newly calculated values, in fact the gridview disappears from the form completely.
>
>What am I doing wrong?

What is the code you're using in the Load method of the ASP.NET form? Are you checking IsPostBack status to run your code? Also, are you saving the DS into a session variable or re-build it?