login.aspx.cs

本程序只要配置好IIS就可以直接使用,是一个在线网上考试系统

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.HtmlControls; 
using System.Drawing.Design; 
using System.Drawing; 
public class imagecode : System.Web.UI.Page 
{
	protected System.Web.UI.WebControls.LinkButton ChangeCode;
	protected System.Web.UI.WebControls.Label Label1;
	protected System.Web.UI.WebControls.Label Label2;
	protected System.Web.UI.WebControls.Label Label3;
	protected System.Web.UI.WebControls.ImageButton yzm;
	protected System.Web.UI.WebControls.Button Button1;
	protected System.Web.UI.WebControls.TextBox Textname;
	protected System.Web.UI.WebControls.TextBox Textpwd;
	protected System.Web.UI.WebControls.TextBox a;
 
	protected void Page_Load(object sender, EventArgs e) 
	{ 
		//this.CreateCheckCodeImage(RndNum()); 

	} 
	private void InitializeComponent()
	{
		this.ChangeCode.Click += new System.EventHandler(this.ChangeCode_Click);
		this.Button1.Click += new System.EventHandler(this.Button1_Click);
		this.Load += new System.EventHandler(this.Page_Load);

	}
	protected  void ChangeCode_Click(object sender, System.EventArgs e)
	{
	
	}

	protected void Button1_Click(object sender, System.EventArgs e)
	{
		if(this.a.Text=="")
		{
			Response.Write("<script>alert('请输入验证码!')</script>"); 
		}
		else
		{
			if (String.Compare(Request.Cookies["yzmcode"].Value, a.Text, true) != 0) 
			{ 
				Response.Write("<script>alert('验证码错误!')</script>"); 
			} 
			else 
			{ 
				if (this.Textname.Text=="" && this.Textpwd.Text=="") 
				{
					Response.Write("<script>alert('用户名或密码不能为空!')</script>"); 
				}
				else
				{
					string strsql="select * from Users where U_Name='"+ this.Textname.Text +"' and U_Pwd='"+ this.Textpwd.Text +"'";
					DBClass.DataClass db=new DBClass.DataClass();
					DataSet ds=new DataSet();
					ds=db.SelectData(strsql);
					if(ds.Tables[0].Rows.Count==1)
					{
						Response.Write("<script>alert('登录成功!')</script>"); 
					}
				}
			} 
		}
			
	} 

}