login.aspx.cs

在线考试系统...asp.net

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace TestOnline
{
	/// <summary>
	/// WebForm1 的摘要说明。
	/// </summary>
	public class WebForm1 : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox Textbox_stuId;
		protected System.Web.UI.WebControls.TextBox Textbox_userPwd;
		protected System.Web.UI.WebControls.ImageButton ImageButton1;
		protected System.Web.UI.WebControls.ImageButton ImageButton2;
		protected System.Web.UI.WebControls.DropDownList DropDownList1;
		protected System.Web.UI.WebControls.TextBox TextBox2;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
			
			Session.RemoveAll();
			//Response.Write("<script>document.all.Login.Textbox_stuId.focus()</script>");
		
		}

		#region Web 窗体设计器生成的代码
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.ImageButton1.Click += new System.Web.UI.ImageClickEventHandler(this.ImageButton1_Click);
			this.ImageButton2.Click += new System.Web.UI.ImageClickEventHandler(this.ImageButton2_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

	

		private void ImageButton1_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
			if(Textbox_stuId.Text.Trim()==""||Textbox_userPwd.Text.Trim()=="")
			{
				if(Textbox_stuId.Text.Trim()==""&&Textbox_userPwd.Text.Trim()=="")
					Response.Write("<script>alert(\"用户名和密码不能为空！\");</script>");
				else if(Textbox_stuId.Text.Trim()=="")
					Response.Write("<script>alert(\"用户名不能为空！\");</script>");
				else if(Textbox_userPwd.Text.Trim()=="")
					Response.Write("<script>alert(\"密码不能为空！\");</script>");
				
				
			}
			else
			{
					int count=0;
			
				if(DropDownList1.SelectedValue=="学生")
				{
					
					int exist;
					exist=(new projClass()).ifStuExist(Textbox_stuId.Text);
					if(exist==1)
					{ 
					   count=(new projClass()).getUser(Textbox_stuId.Text,Textbox_userPwd.Text);
						if(count==1)
						{
						string stuId=Textbox_stuId.Text.ToString();
						Session["stuId"]=stuId;
						Response.Redirect("userInfo.aspx");
					//	Response.Redirect("userInfo.aspx?stuId="+stuId);
						}
						else Response.Write("<script>alert(\"密码错误!请重新输入\");</script>");
					}
					//else if(count==2)
						//Response.Write("<script>alert(\"密码错误!请重新输入\");</script>");
					else Response.Write("<script>alert(\"学号不存在！请确认学号输入正确\");</script>");
				}
				else if(DropDownList1.SelectedValue=="管理员")
				{
					count=(new projClass()).getAdmin(Textbox_stuId.Text,Textbox_userPwd.Text);
					if(count>0)
					{
						Response.Write("<script>alert(\"登陆成功！\");</script>");
						string adminId=Textbox_stuId.Text.ToString();
						Session["adminId"]=adminId;
						Response.Redirect("adminFrame.htm");
					}else Response.Write("<script>alert(\"登录失败!\");</script>");
					
					
				}
				else if(DropDownList1.SelectedValue=="教师")
				{
					count=(new projClass()).getTeacher(Textbox_stuId.Text,Textbox_userPwd.Text);
					if(count>0)
					{
						
						string teacherId=Textbox_stuId.Text.ToString();
						Session["teacherId"]=teacherId;
						Response.Redirect("teacherFrame.htm");
					}
					else Response.Write("<script>alert(\"登录失败!\");</script>");
					

				}
			}

			
		
		}

		private void ImageButton2_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
			Textbox_stuId.Text="";
			Textbox_userPwd.Text="";
		
		}
	}
}