problem with datagrid

Question

Hi, I am connecting orcale8i database using asp.net in C#. I am showing data(data comes from more than one table using sql join query) in a datagrid using dataset and then binding with datagrid. In first row it is showing all data. But from the 2nd row in few fields some part of data is getting truncated, like in username column user1 Us (Instead of user2) Us (Instead of user3) but if run the sql in oracle its showing all the data. In another page i am showing data in data repeater in this case same thing happening from 2nd row onwards. In another case after executing sql through datareader it does not return data. though in this case also if i run the sql in oracle it return rows. kajal