Data Binding problem with ComboBox

[hellamasta]

Hi everybody!!! I have a DataSet with only one DataTable in it. The DataTable has many DataColumn and one of those is binded to a ComboBox. Below the DataColumn... DataColumn protocolloColumn = new DataColumn("protocollo"); protocolloColumn.DataType = System.Type.GetType("System.String"); carDataTable.Columns.Add(protocolloColumn); ...and the Binding this.protocolloComboBox.DataBindings.Add(new Binding("SelectedValue", carDataSet, "car_models.protocollo")); The ComboBox is populated with some string. When I select a value from the combobox, this value is not stored in the dataset. Can anybody help me?