UpdateUserInfo.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;

public partial class UpdateUserInfo : System.Web.UI.Page
{
   
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            
                string SQL = "select * from TB_Pro";
                DataSet ds = DBHelper.GetDataSet(SQL);
                this.DropDownList2.DataTextField = "Pro";
                this.DropDownList2.DataValueField = "ID";
                this.DropDownList2.DataSource = ds;
                this.DropDownList2.DataBind();
                GetDrop();
           
            if (Session["MemberName"] == null)
            {
                Response.Write("<script language='javascript'>alert('没有登录，不能操作！');location='javascript:history.go(-1)';</script>");
            }
            else
            {
                GetUserInfo();
            }
        }
       
    }
    public void GetDrop()
    {
        string SQL = "select * from TB_City where ProID='" + this.DropDownList2.SelectedItem.Value + "'";
        DataSet ds = DBHelper.GetDataSet(SQL);
        this.DropDownList3.DataTextField = "City";
        this.DropDownList3.DataValueField = "ID";
        this.DropDownList3.DataSource = ds;
        this.DropDownList3.DataBind();
    }
    protected void DropDownList2_SelectedIndexChanged(object sender, EventArgs e)
    {
        GetDrop();
    }
    private void GetUserInfo()
    {
        string sql = "select * from tb_Member where MemberName ='" + Session["MemberName"]+"'";
        DataTable dt = DBHelper.GetDataSet(sql).Tables[0];

        this.TextBox1.Text = dt.Rows[0]["MemberName"].ToString();
        this.TextBox2.Text = dt.Rows[0]["MemberPwd"].ToString();
        this.TextBox3.Text = dt.Rows[0]["MemberPwd"].ToString();
        this.TextBox4.Text = dt.Rows[0]["QQ"].ToString();