IEnumerable type cast

{
-- 
public static IEnumerable<Datarow> Codes(string topvalue)
    {

        DataTable itemCodes = new DataTable();

        itemCodes.Columns.Add("itemId");
        itemCodes.Columns.Add("itemCode");

        itemCodes.Rows.Add(0, firstCallingCode);
        DataTable Codes = GetAllItems().Tables[0];
        foreach (DataRow item in Codes.Rows)
        {
            if (item["ItemCode"] != DBNull.Value)
            {
                itemCodes.Rows.Add(item.Field<int?>("itemId"), item.Field<string>("itemCode"));
            }
        }
        return itemCodes.AsEnumerable();d
    }

how can i bind it to dropdownlist: i tried this

ddcodes.datasource = codes.getenumerable();开发者_如何学C
ddcodes.databind();

when i do this i get error about typecast. i can not solve it tried a lot please help. my method is actually this

public static IEnumerable"Datarow" Codes(string topvalue)

dont know why editor took that datarow off. bracket and datarow.

---

You just need to pass in the return value from the Codes method.

ddcodes.datasource = Codes();
ddcodes.databind();

You don't need to "get" an enumerable. The Codes method is already returning one.