DataSource Controls :: Loading New Row To Data Table

I am using 2 data tables one for comparing the i.item-id=dr[datacolumn] and one for storing the result i.item_guid,i.item_description_title. But getting an error at table2.Rows.Add(itemlist) {"Input array is longer than the number of columns in this table."}

DataTable table2 = new DataTable();
foreach (DataRow dr in ds.Rows)
{
foreach (DataColumn dataColumn in ds.Columns)
{
pfDataContext pf = new pFDataContext();
var itemlist = from i in pf.item_tbls where i.item_id == dr[dataColumn].ToString() select new { i.item_guid, i.item_description_title };
table2.Rows.Add(itemlist);
}
}