How to pass table value parameters to stored procedure from .net code

Question

I have a SQL Server 2005 database. In a few procedures I have table parameters that I pass to a stored proc as an nvarchar (separated by commas) and internally

Answer 1

Generic

   public static DataTable ToTableValuedParameter(this IEnumerable list, Func selector)
    {
        var tbl = new DataTable();
        tbl.Columns.Add("Id", typeof(T));

        foreach (var item in list)
        {
            tbl.Rows.Add(selector.Invoke(item));

        }

        return tbl;

    }