admin/changepassword.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 admin_changepassword : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        check_login();
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        check_pass();
        changepass();
    }
    void check_login()
    {
        if (Session["admin"] == null || Session["admin"].ToString() == "")
        {
            Response.Write("<script language='javascript'>alert('请先登录!');</script>");
            Response.Redirect("login.aspx");
        }
    }
    /// <summary>
    /// 检查旧密码是否正确
    /// </summary>
    void check_pass()
    {
        string strSql1 = "select * from admin where username='" + Session["admin"].ToString()+"'";
        string strConn1 = ConfigurationManager.ConnectionStrings["sq_chaletshopConnectionString"].ToString();
        SqlConnection conn1= new SqlConnection(strConn1);
        SqlCommand sqlcom1 = new SqlCommand(strSql1, conn1);
        conn1.Open();
        SqlDataReader reader = sqlcom1.ExecuteReader();
        if (reader.Read())
        {
            if (reader["password"].ToString() != this.oldpass.Text.ToString().Trim())
            {
                Response.Write("<script language=javascript>alert('旧密码不正确!');location='changepassword.aspx'</script>");
            }
            else
            {
                //通过检查
            }
        }
    }
    /// <summary>
    /// 修改密码
    /// </summary>
    void changepass()
    {
        string strSql = "update admin set password='" + this.newpass2.Text.ToString() + "' where id="+Session["id"].ToString();