[WinForm]为ComboBox绑定数据源并提供下拉提示

关键代码：

        /// <summary>

        ///  为ComboBox绑定数据源并提供下拉提示

        /// </summary>

        /// <typeparam name="T">泛型</typeparam>

        /// <param name="combox">ComboBox</param>

        /// <param name="list">数据源</param>

        /// <param name="displayMember">显示字段</param>

        /// <param name="valueMember">隐式字段</param>

        /// <param name="displayText">下拉提示文字</param>

        public static void Bind<T>(this ComboBox combox, IList<T> list, string displayMember, string valueMember, string displayText)

        {

            AddItem(list, displayMember, displayText);

            combox.DataSource = list;

            combox.DisplayMember = displayMember;

            if (!string.IsNullOrEmpty(valueMember))

                combox.ValueMember = valueMember;

        }

        private static void AddItem<T>(IList<T> list, string displayMember, string displayText)

        {

            Object _obj = Activator.CreateInstance<T>();

            Type _type = _obj.GetType();

            if (!string.IsNullOrEmpty(displayMember))

            {

                PropertyInfo _displayProperty = _type.GetProperty(displayMember);

                _displayProperty.SetValue(_obj, displayText, null);

            }

            list.Insert(0, (T)_obj);

        }

使用示例：

        List<CommonEntity> Sources = new List<CommonEntity>();

        private void WinComboBoxToolV2Test_Load(object sender, EventArgs e)

        {

            CreateBindSource(5);

            comboBox1.Bind(Sources, "Name", "Age", "--请选择--");

        }



        private void CreateBindSource(int count)

        {

            for (int i = 0; i < count; i++)

            {

                CommonEntity _entity = new CommonEntity();

                _entity.Age = i;

                _entity.Name = string.Format("Yan{0}", i);

                Sources.Add(_entity);

            }

        }

代码效果：

希望有所帮助！