are you sure? show some more code?it is very weird, why cannot you just doDropDownList1.DataSource = ds.Tables[0].DefaultView;
DropDownList1.DataTextField = "cbh";
DropDownList1.DataValueField = "n_bz3";
DropDownList1.DataBind();DropDownList1.SelectedIndex=0; //not needed
DropDownList1.DataTextField = "cbh";
DropDownList1.DataValueField = "n_bz3";
DropDownList1.DataBind();DropDownList1.SelectedIndex=0; //not needed
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