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You select the record from master control (as example Grid View) and selected record is displayed in Detail View control.In general Grid View control displays more than one record, but the Details View control displays single record from database table.When developing application pages you can use this control to build Share Point-like pages.It offers a basic layout for the different parts of the control and offers a skeleton in which you can place your own controls.
Since two way binding is not supported for the First Name Text Box, the special code for extracting values is not generated resulting in null being sent back for the First Name property. I just don't understand why using a nested control doesn't work properly.When you execute your web page, Details View control renders an HTML table.The Details View supports both declarative and programmatic databinding. NET 3.5 SP1This post describes two gotchas with the Form View control when binding:1) When performing two way databinding, Null values and Nullables get changed to string. 2) Two way binding is not supported for nested controls.When performing two way databinding, Null values and Nullables get changed to string. The way the Form View control handles null values has caused me some grief :-( Consider a Form View bound to an Object Data Source like so: On the other hand, if we try the same thing with the Details View control, the Last Name will still be “null” on update.
I change the value and click the Update button -- as soon as I do that then on-screen the value in the textbox goes back to what it was originally and the original value is sent as parameter to the method call. The code is finding the control on the formview but won't take the new value and keeps using the old one.