Modify it as
DataTable dt = new DataTable();
dsSite = objDB.ExecProc_getDataSet("D_SP_GET_EquipmentAttribute_GRID_Search", arrparam1);
if (dsSite != null && dsSite.Tables.Count > 0)
{
dt = dsSite.Tables[0];
if (dt.Rows.Count > 0)
{
}
else
{
}
}
GVEquipmentAttribute.DataSource = dt;
GVEquipmentAttribute.DataBind();