问题:
You are implementing an ASP.NET page that includes the following drop-down list.
You need to dynamically add values to the end of the drop-down list. What should you do? ()
A . Add the following OnPreRender event handler to the asp:DropDownList
B . Add the following OnPreRender event handler to the asp:DropDownList
C . Add the following event handler to the page code-behind.
D . Add the following event handler to the page code-behind.
You are implementing an ASP.NET page that includes the following drop-down list.
You need to dynamically add values to the end of the drop-down list. What should you do? ()
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