userregister.aspx.cs

来自「用ASP.NET（C#）、SQL Server2000数据库开发在线考试系统源代」· CS 代码 · 共 117 行

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 UserRegister.
	/// </summary>
	public class UserRegister : System.Web.UI.Page
	{
		protected System.Web.UI.HtmlControls.HtmlGenericControl title;
		protected System.Web.UI.WebControls.TextBox UserName;
		protected System.Web.UI.WebControls.RequiredFieldValidator UName;
		protected System.Web.UI.WebControls.TextBox Password;
		protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator1;
		protected System.Web.UI.WebControls.RegularExpressionValidator RegularExpressionValidator2;
		protected System.Web.UI.WebControls.TextBox PasswordStr;
		protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator2;
		protected System.Web.UI.WebControls.TextBox Email;
		protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator3;
		protected System.Web.UI.WebControls.RegularExpressionValidator RegularExpressionValidator1;
		protected System.Web.UI.WebControls.Button AddUserBtn;
		protected System.Web.UI.WebControls.Button CancelBtn;
		protected System.Web.UI.WebControls.Label EqualLoginName;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			//
		}

		#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.AddUserBtn.Click += new System.EventHandler(this.AddUserBtn_Click);
			this.CancelBtn.Click += new System.EventHandler(this.CancelBtn_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void AddUserBtn_Click(object sender, System.EventArgs e)
		{
			UserDB user = new UserDB();
			String userId = "";
			int nUserID = 0;

			SqlConnection myConnection = new SqlConnection(SQLHelper.DBCONNECTIONSTRING);
			String cmdTxt = "Select * from Users Where UserName ='"+ UserName.Text.Trim() +"'";
			SqlCommand myCommand = new SqlCommand(cmdTxt,myConnection);
			myConnection.Open();
			SqlDataReader recu = myCommand.ExecuteReader();
			
			while(recu.Read())
			{
				userId = recu["UserID"].ToString();
			
				if((userId != null)&&(userId != ""))
				{
					Response.Write("<script>alert(\"该用户已存在！\")</script>");
					UserName.Text = "";
					Password.Text = PasswordStr.Text = "";
				}
				else if(Password.Text == PasswordStr.Text)
				{
					try
					{
						nUserID = user.AddUser(UserName.Text.Trim(),UserDB.Encrypt(Password.Text.Trim()),
							CleanString.InputText(Email.Text.Trim(),Email.Text.Length));
					
						EqualLoginName.Text = "注册成功，请从程序首页登录！";
						EqualLoginName.Visible = true;
					}
					catch(Exception ex)
					{
						///错误处理
						EqualLoginName.Text = "注册失败，失败的原因如下：" + ex.Message;
						EqualLoginName.Visible = true;
					}
				}
				else
				{
					Response.Write("<script>alert(\"你两次输入的密码不相等，请重新输入！\")</script>");
				}
			}recu.Close();myConnection.Close();
		}

		private void CancelBtn_Click(object sender, System.EventArgs e)
		{
            UserName.Text = "";
			Password.Text = PasswordStr.Text = "";
			Email.Text = "";
		}
	}
}