Mpwd.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 Mpwd : System.Web.UI.Page
{
    SqlHelper data = new SqlHelper();
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    private void UPpwd()
    {
     
        string Username = Session["id"].ToString();
        try
        {
            string sql = "update [users]  set [user_pwd] ='" + txtConfirmPassword.Value + "' where [user_Id]='" + Username + "' ";
            data.RunSql(sql);
            Session.Abandon();
            Session.Clear();
            Session["username"] = null;
            Session["User_realName"] = null;
            Alert.AlertAndRedirect("修改成功请使用新密码登录", "Default.aspx");
        }
        catch
        {

            Session.Abandon();
            Session.Clear();
            Session["username"] = null;
            Session["User_realName"] = null;
            Alert.AlertAndRedirect("修改失败", "Default.aspx");
        }
    }
    /// <summary>
    /// 检验原来的密码
    /// </summary>
    private void chkpwd()
    {
        SqlDataReader dr;
        dr = data.GetDataReader("select * from  users  where user_Id='" + Session["id"].ToString() + "' and user_pwd='" + txtPassword.Value + "'");
        if (dr.Read())
        {
            UPpwd();
        }
        else
        {
            lbInfo.Text = "原密码不正确！";
        }

    }
    protected void IbnOk_Click(object sender, ImageClickEventArgs e)