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

首先新写一个PageBase类

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"); } } }}

Login页面后台部分代码

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>"); } }

以stuWishChoices页面为例，继承PageBase类

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) { } } }}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。