webform1.aspx.cs

C#2005 实例源代码

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class WebForm1 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!this.IsPostBack)
        {
            InitData();
        }
    }

    private void InitData()
    {
        //连接数据库
        SqlConnection myCon = new SqlConnection();
        myCon.ConnectionString = "Persist Security Info=False;User id=sa;pwd=sa;database=northwind;server=(local)";
        myCon.Open();

        //使用SqlCommand提交查询命令
        SqlCommand selectCMD = new SqlCommand("SELECT CategoryName,CategoryID FROM Categories", myCon);

        //获取数据适配器
        SqlDataAdapter da = new SqlDataAdapter();
        da.SelectCommand = selectCMD;

        //填充DataSet，得到DataTable
        DataSet ds = new DataSet();
        da.Fill(ds);
        DataTable dt = ds.Tables["Categories"];

        //将DataSet中的数据绑定到CheckBoxList1
        CheckBoxList1.DataSource = dt;
        CheckBoxList1.DataTextField = "CategoryName";
        CheckBoxList1.DataValueField = "CategoryID";
        CheckBoxList1.DataBind();

        //断开连接
        myCon.Close();
    }
}