ASP.NET Super Form - Validate Custom DropDownListField

Order Details
Customer
 
Country
 
Insert
 
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This example showcases the use of custom DropDownListField fields, for which we added extra items at runtime ("Select a customer ..." and "Select a country ..."). The Validators collection is used to set up a RequiredFieldValidator for both fields in such a way to detect when the users select one of the "Select ..." items and prevent them from saving the changes unless they select a correct item.

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