本文实例展示了WinForm实现为ComboBox绑定数据源并提供下拉提示功能，这是一个非常有实用价值的功能，具体实现方法如下：

主要功能代码如下：

/// <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); } }

代码运行效果如下：