This is straight forward. Set the “SelectedValue” attribute for DropDownList control.
Note. The “SelectedValue” is not in the intelligent context menu. It won’t automatic pop-up when you typing, but it does exist.
For example, we display a product in a DetailsView. In edit mode, we want to use a dropdown list to select the type of that product. Assume the type id is used in the product table, the edit template would be like:
<EditItemTemplate>
<asp:DropDownList **** DataTextField="Name" DataValueField="typeid" SelectedValue='<%# Bind("typeid") %>'></asp:DropDownList>
</EditItemTemplate>
This will auto bind the type id to the list and update with the selected id. The update command and parameters are as usual.
