Answer / rajesh

make sure that dropdownlist is there in the webform

Answer / sujit biswas

if (!IsPostBack)
{
ArrayList books=new ArrayList();
books.Add("gone with the wind");
books.Add("rahulsriramprakash");
books.Add("vishal");
dropdowndisplay.DataSource = books;
dropdowndisplay.DataBind();
}

Answer / vyas pyk

though u have the control in the web form some times is
shows like that onle,
the solutions is u better delete the control and add it
again u will get it

Answer / rahul

Even i tried with that even it's saying the same error.

Answer / tarun

instead of arrayList use HashTable

and create one bindingsourse

BindingSource bs=new BindingSource();

HashTable hs=new HashTable();
hs.Add("Value","Key");

bs.dataSource=hs;

dropdowndisplya.datasource=bs;
dropdowndisplay.databind();

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