this.culturesCB.ValueMember = "LCID";
            this.culturesCB.DataSource = CultureInfo.GetCultures(CultureTypes.FrameworkCultures);

            /* Set the currently selected item in the ComboBox                  */
            this.culturesCB.SelectedValue = CultureInfo.CurrentCulture.LCID;

            /* Concatenate the IetfLanguageTag and DisplayName properties       */
            this.culturesCB.Format += delegate(object cb, ListControlConvertEventArgs args)
            {
                CultureInfo ci = (args.ListItem as CultureInfo);

                if (null != ci)
                {
                    args.Value = string.Format("{0}: {1}", ci.IetfLanguageTag, ci.DisplayName);
                }
            };

------解决方案--------------------
cboDis.DisplayMember = Dis.Tables[0].Columns["DisN"].ColumnName;
cboDis.ValueMember = Dis.Tables[0].Columns["DisNO"].ColumnName;
取value值

------解决方案--------------------
好像和我 问的两个问题 一样嘛!
http://topic.csdn.net/u/20080731/18/e0a2816c-0bad-4ab6-b420-086ddaba0a22.html
http://topic.csdn.net/u/20080801/10/a608e0b4-6126-49d6-8274-020123ae1a8f.html