Using SQL tinyint columns in C#

gistfile1.cs

DataSet ds = GetDataSetFromStoredProc("stored_proc_name", new SqlParameter("@parameter_name", value_id));

var retItems = from dstable in ds.Tables[0].AsEnumerable()
                select new ClassThing()
                {
                    PrimaryKeyId = dstable.Field<int>("some_column_name")
                };