score:0

Accepted answer

you can try like this, peform a check before giving a datasource

var ddleligibility = ((dropdownlist)(fvsubscriber.findcontrol("ddleligibility")));

if(ddleligibility!=null)
{
   ddleligibility.datasource = program;
   ddleligibility.databind();
} 
else
{
   statusmesage.innerhtml = "it is null";
}

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