C# WinForm 技巧二： Combobox手动绑定数据

定义一个类，有两个属性

    /// <summary>
    /// 元数据
    /// </summary>
    [System.Diagnostics.DebuggerStepThrough]
    [Serializable]
    public class SandData
    {
        String key = "";
        Object value = "";
        /// <summary>
        /// 元数据
        /// </summary>
        public SandData() { }
        /// <summary>
        /// 元数据
        /// </summary>
        public SandData(String m_key,Object m_value) {
            this.key = m_key;
            this.value = m_value;
        }
        public String Key
        {
            get { return key; }
            set { key = value; }
        }
        public Object Value
        {
            get { return this.value; }
            set { this.value = value; }
        }

  }

然后，用一个

ArrayList list = new ArrayList();
                   foreach (DataRow row in table.Rows)
                   {
                       string text = row["d_name"].ToString() +"[" + row["UptownName"].ToString() + row["BuildingName"].ToString() + row["UnitName"].ToString()+"]";
                       string value = row["Id"].ToString();

                       SandData vo = new SandData();
                       vo.Key = text;
                       vo.Value = value;
                       list.Add(vo);
                   }
                   this.comboBox1.DataSource = list;
                   this.comboBox1.DisplayMember = "Key";
                   this.comboBox1.ValueMember = "Value";

这样就OK了，取值只要cbb.SelectedValue就取到了。