User contains various properties which i have been able to bind to successfully using wizards and the form view.When I finally resort to set the Update Method's parameter manually, everything works!This is a strong evidence of such a possible exception.NET is smart enough to do it for me automatically !! Supplement information: Upon clicking Edit Item Template's update link button: Item Command event is triggered, then return and goes no further. This is my foresaid work around solution: programmatically fill in datasource's parameters, when apparently ASP. However, I am still appreciate if anyone can explain this problem.
Why isn't Form View's Item Updating event fired, when obviously link button's command name = "Update"? protected void Form View1_Item Command(object sender, Form View Command Event Args e) protected void Object Data Source1_Updating(object sender, Object Data Source Method Event Args e) protected void Object Data Source1_Inserting(object sender, Object Data Source Method Event Args e) private void set ODSParameter(Object Data Source Method Event Args e) Thanks for your suggestion, but I don't think it is a common practice to invoke ODS' update event manually.
Problem found: There was a Validator in the Form View, this Validator (along with its associated input Text Box) was ocassionaly set to Invisible.