MyShiXiInfo.aspx.cs

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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 MyShiXiInfo : System.Web.UI.Page
{
    Alert alert = new Alert();
    SqlHelper data = new SqlHelper();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            DropDownList1.DataSource = data.GetDataReader("select * from  CompanyInfo");
            DropDownList1.DataTextField = "Name";
            DropDownList1.DataValueField = "id";
            DropDownList1.DataBind();

            SqlDataReader dr;
            dr = data.GetDataReader("select * from  SXCompanyInfo where id=" + Request.QueryString["id"].ToString());
            dr.Read();
            txtname.Text = dr["Name"].ToString();
            TextBox1.Text = dr["leixing"].ToString();
            TextBox2.Text = dr["fuzeren"].ToString();
            TextBox3.Text = dr["dianhua"].ToString();
            TextBox4.Text = dr["dizhi"].ToString();
            txtds.Text = dr["MiaoShu"].ToString();
        }

    }
    protected void LinkButton1_Click(object sender, EventArgs e)
    {
        int id = int.Parse(Request.QueryString["id"].ToString());
        data.RunSql("update   SXCompanyInfo set Name='" + txtname.Text + "',leixing='" + TextBox1.Text + "',fuzeren='" + TextBox2.Text + "', dianhua='" + TextBox3.Text + "', dizhi='" + TextBox4.Text + "',MiaoShu='" + txtds.Text + "',ComName='" + DropDownList1.SelectedItem.Text + "',ComId='"+DropDownList1.SelectedValue+"'   where id=" + id);

        Alert.AlertAndRedirect("修改成功！", "MySXList.aspx");

    }
    protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
       
        SqlDataReader dr;
        dr = data.GetDataReader("select * from  CompanyInfo where id=" + this.DropDownList1.SelectedValue);
        dr.Read();
        txtname.Text = dr["Name"].ToString();
        TextBox1.Text = dr["leixing"].ToString();
        TextBox2.Text = dr["fuzeren"].ToString();
        TextBox3.Text = dr["dianhua"].ToString();
        TextBox4.Text = dr["dizhi"].ToString();
        txtds.Text = dr["MiaoShu"].ToString();

    }
}