C#中drowDownList使用

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• 代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Text;

public partial class Alerm_in_alerm : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
      if (!Page.IsPostBack)
        {
            DataSet ds = new DataSet();
            ds.Tables.Add("in");
            ds.Tables["in"].Columns.Add("No",typeof(int));
            ds.Tables["in"].Columns.Add("name", typeof(string));
            ds.Tables["in"].Columns.Add("data", typeof(int));
            ds.Tables["in"].Rows.Add(new object[]{1,"张三",200});
            ds.Tables["in"].Rows.Add(new object[]{2,"张2",200});
            ds.Tables["in"].Rows.Add(new object[]{3,"张a",200});
            ds.Tables["in"].Rows.Add(new object[]{4,"张b",200});
            ds.Tables["in"].Rows.Add(new object[]{5,"张i",200});

            this.DropDownList1.DataSource = ds.Tables["in"];
            this.DropDownList1.DataValueField = "No";
            this.DropDownList1.DataTextField = "name";
            this.DropDownList1.DataBind();
        }
 
    }
}

• 界面如下：
  
• 执行效果如下：