Thanks Steve! It was so little mistake and i get so depressed.... Thank you

as900197

Hello! I have been using Datasets and DataAdapters by dragging and dropping on my form. Now I have created a public class and created a dataset by code and filled it wit a Dataadapter. Dataset contains one table "DEPARTMENT" with columns "D_ID" and "D_NAME". Dataset is filled and contains data but when in windows form i tried to bind a combobox to that table it creates problems. 1) dim ClassObj as new DSClass 2)CobmoBox1.datasource = ClassObj.Dataset1.Tables("DEPARTMENT") 3)CobmoBox1.DisplayMember = ????????????????????????? 4)CobmoBox1.DisplayMember = ????????????????????????? Lines 3,4 creates problems, Please guide me

as900197