Here Mudassar Ahmed Khan has explained with an example, how to make the First (Default) item (option) not Selectable in ASP.Net DropDownList using C# and VB.Net.
Generally DropDownList controls have a default first item (option) such as “Please select” which is not meant to be selected and hence using this technique user will not be able to select the First (Default) item (option) in the ASP.Net DropDownList.
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