.net验证后台页面是否登录实例教程

本文实例为大家分享了.net后台页面统一验证是否登录的具体代码，供大家参考，具体内容如下

using System;  using System.Collections.Generic;  using System.Web;    namespace DepartmentMIS.Web.myclass  {    public class PageBase : System.Web.UI.Page    {      public PageBase()      {        this.Load += new EventHandler(BasePage_Load);      }        private void BasePage_Load(object sender, EventArgs e)      {        if (Session["UserNo"] == null || Session["UserNo"].ToString() == "")        {          Response.Redirect("~/Login.aspx");        }      }    }  }

protected void btnLogin_Click(object sender, EventArgs e)      {        if (rblRole.SelectedValue == "1")        {          DataSet ds = AdminBLL.GetList("userName = '" + tbxUserName.Text.Trim() + "' and password = '" + tbxPassword.Text.Trim()+"' and isDeleted = 0");          if (ds.Tables[0].Rows.Count == 1)          {            int id = Convert.ToInt32(ds.Tables[0].Rows[0]["id"]);            Session["UserNo"] = ds.Tables[0].Rows[0]["id"];            Session["UserName"] = ds.Tables[0].Rows[0]["userName"];            Response.Redirect("admin/adminIndex.aspx");          }          else          {            Response.Write("<script>alert('用户名或密码错误！')</script>");          }        }        if (rblRole.SelectedValue == "2")        {          DataSet ds = StuBLL.GetList("stuNo = '" + tbxUserName.Text.Trim() + "' and password = '" + tbxPassword.Text.Trim() + "' and isDeleted = 0");          if (ds.Tables[0].Rows.Count == 1)          {            int id = Convert.ToInt32(ds.Tables[0].Rows[0]["id"]);            Session["UserNo"] = ds.Tables[0].Rows[0]["id"];            Session["UserName"] = ds.Tables[0].Rows[0]["stuName"];            Response.Redirect("student/stusIndex.aspx");          }          else          {            Response.Write("<script>alert('用户名或密码错误！')</script>");          }        }

using System.Web.UI.WebControls.WebParts;  using System.Data.SqlClient;  using System.Collections;    namespace cbmis.ProDocumentMng  {    public partial class DocumentList : BasePage //继承    {        protected void Page_Load(object sender, EventArgs e)        {              }        }    }  }

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