public DataTableReaderTest()
{
_dt = new DataTable("test");
_dt.Columns.Add("id", typeof(int));
_dt.Columns.Add("name", typeof(string));
_dt.PrimaryKey = new DataColumn[] { _dt.Columns["id"] };
_dt.Rows.Add(new object[] { 1, "mono 1" });
_dt.Rows.Add(new object[] { 2, "mono 2" });
_dt.Rows.Add(new object[] { 3, "mono 3" });
_dt.AcceptChanges();
}