Sort and bind datarow to dropdownlist

string _Code =开发者_C百科 "21";

        IEnumerable<DataRow> drs = GetCodes(_Code);
        foreach (DataRow items in drs)
        {
            ListItem li = new ListItem(items["CallingCode"].ToString(), items["CountryID"].ToString());
            ddCountry.Items.Add(li);
        }

//How can i sort the dropdownlist by calling code.

---

This might help...

Sort IEnumerable and List with property name

---

You could use LINQ to sort drs before creating the list of items...

var orderedDRS = drs.OrderBy(row => row["CallingCode"].ToString());
foreach (DataRow items in orderedDRS)
    {
        ...
    }

Where row => row["CallingCode"].ToString() is a lambda expression that selects the row's "CallingCode" as the sort key for OrderBy

You could use LINQ further to bind the DropDown without a foreach loop by Selecting out the CallingCode and CountryID values