updateuserpassword.aspx.cs

用ASP.NET（C#）、SQL Server2000数据库开发在线考试系统源代码

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;
using System.Data.SqlClient;

namespace ExamineSystem
{
	/// <summary>
	/// Summary description for UpdateUserPassword.
	/// </summary>
	public class UpdateUserPassword : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox UserName;
		protected System.Web.UI.WebControls.RequiredFieldValidator UName;
		protected System.Web.UI.WebControls.TextBox OldPassword;
		protected System.Web.UI.WebControls.RequiredFieldValidator ro;
		protected System.Web.UI.WebControls.TextBox NewPassword;
		protected System.Web.UI.WebControls.RequiredFieldValidator rn;
		protected System.Web.UI.WebControls.TextBox PasswordStr;
		protected System.Web.UI.WebControls.RequiredFieldValidator rnp;
		protected System.Web.UI.WebControls.Button SureBtn;
		protected System.Web.UI.WebControls.Button AgainBtn;
		protected System.Web.UI.HtmlControls.HtmlGenericControl title;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			///验证用户的权限
			if(Session["UserID"] == null)
			{
				Response.Redirect("~/Default.aspx");
			}
			

			if(!IsPostBack)
			{
				BindUserData(Int32.Parse(Session["UserID"].ToString()));
			}
		}

		private void BindUserData(int nUserID)
		{
			UserDB user = new UserDB();
			SqlDataReader recu = user.GetSingleUser(nUserID);

			while(recu.Read())
			{
				UserName.Text = recu["UserName"].ToString();
			}
			recu.Close();
		}

		private void SureBtn_Click(object sender, System.EventArgs e)
		{
			UserDB user = new UserDB();

			String userId = "";

			if(NewPassword.Text == PasswordStr.Text)
			{
				SqlDataReader recu = user.GetUserLogin(UserName.Text.Trim(),UserDB.Encrypt(OldPassword.Text.Trim()));

				if(recu.Read())
				{
					userId = recu["UserID"].ToString();
				}
				else
				{
					Response.Write("<script>alert(\"旧密码输入错误，请重新输入你的密码！\")</script>");
				}
				recu.Close();

				if((userId != null)&&(userId != ""))
				{
					try
					{
						user.UpdateUserPassword(Int32.Parse(userId),UserDB.Encrypt(NewPassword.Text.Trim()));

						Response.Write("<script>alert(\"更改密码成功，请重新登陆！\")</script>");
						Response.Redirect("~/Default.aspx");
					}
					catch(Exception ex)
					{
						string sRawURL = Request.RawUrl;

						if(sRawURL.IndexOf("?") > -1)
						{
							sRawURL = sRawURL.Substring(0,sRawURL.IndexOf("?"));
						}				
						Response.Redirect("~/DesktopModules/ErrorPage.aspx?ErrorUrl=" + sRawURL + "&ErrorMessage=" + ex.Message.Replace("\n"," "));
					}
				}
			}
			else
			{
				Response.Write("<script>alert(\"两次输入的密码不相同，请重新输入！\")</script>");
			}
		}

		private void AgainBtn_Click(object sender, System.EventArgs e)
		{
			OldPassword.Text = "";
			NewPassword.Text = "";
			PasswordStr.Text = "";
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.SureBtn.Click += new System.EventHandler(this.SureBtn_Click);
			this.AgainBtn.Click += new System.EventHandler(this.AgainBtn_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
	}
}