Hi, I'm trying to setup a DataGridView with ComboBox, but I can't manage to setup the selected value of the combobox. The ComboBox value & display members are from table[1] of a Dataset object, and the rest of the datagrid columns are from Table[0] of the dataset. "noseID" (the primary key in Table[1] and the foreign key in Table[0]). How do I apply a selected value for the combobox? Here's my code: Code: private void SetupDataGridView() { this.Controls.Add(afikimGrid); DataGridViewComboBoxColumn comboGrid = new DataGridViewComboBoxColumn(); comboGrid.DataSource = dsRisk.Tables[1]; comboGrid.DisplayMember = "NoseDesc"; comboGrid.ValueMember = "NoseID"; afikimGrid.DataSource = dsRisk.Tables[0]; afikimGrid.Columns.Add(comboGrid); } Thanks, Udi