Problem with duplicate values in comboBox

Hi, I have selected 2 columns to bind into combo box like this. 'Bind ClientMaster to cboClientName cboClientName.DataSource = _dataTable.DefaultView.ToTable(True, "ClientMaster", "USERID") cboClientName.DisplayMember = "ClientMaster" cboClientName.ValueMember = "USERID" Here ClientMaster has some duplicate values and UserID has unique values , So I am seeing duplicate values in combo box.. How can i remove duplicates in combo box with out removing USERID in _dataTable.DefaultView.ToTable(True, "ClientMaster", "USERID") please help me on this.. Thanks in advance.


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