register.aspx.cs

在书店系统,access数据库和.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;
using System.Configuration ;
using System.Data .SqlClient ;

namespace MMS
{
	/// <summary>
	/// register 的摘要说明。
	/// </summary>
	public class register : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox tbx_uid;
		protected System.Web.UI.WebControls.TextBox tbx_password;
		protected System.Web.UI.WebControls.TextBox txb_confirmpass;
		protected System.Web.UI.WebControls.TextBox tbx_uemail;
		protected System.Web.UI.WebControls.Button btn_submit;
		protected System.Web.UI.WebControls.RequiredFieldValidator rfv_password;
		protected System.Web.UI.WebControls.RequiredFieldValidator rfv_confirmpass;
		protected System.Web.UI.WebControls.RequiredFieldValidator rfv_uemail;
		protected System.Web.UI.WebControls.CompareValidator cpv_password;
		protected System.Web.UI.WebControls.CustomValidator ctv_uid;
		protected System.Web.UI.WebControls.HyperLink HyperLink1;
		protected System.Web.UI.WebControls.TextBox tbx_uname;
		protected System.Web.UI.WebControls.RequiredFieldValidator rfv_uname;
		protected System.Web.UI.WebControls.RegularExpressionValidator rev_email;
		protected System.Web.UI.WebControls.RequiredFieldValidator rfv_uid;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
					}

		#region Web Form Designer generated code
		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.btn_submit.Click += new System.EventHandler(this.btn_submit_Click);
			this.ctv_uid.ServerValidate += new System.Web.UI.WebControls.ServerValidateEventHandler(this.ctv_uid_ServerValidate);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void btn_submit_Click(object sender, System.EventArgs e)
		{
			if(Page.IsValid )
			{//从文件Web.config中读取连接字符串
				string strconn= ConfigurationSettings.AppSettings["dsn"];
				//连接本地计算机的MMS数据库
				SqlConnection cn= new SqlConnection (strconn);
				cn.Open ();
				//利用Command对象调用存储过程
				SqlCommand cm=new SqlCommand  ("useradd",cn);
				//将命令类型转为存储类型
				cm.CommandType =CommandType.StoredProcedure ;
				//添加并给参数付值
				cm.Parameters .Add ("@UID",SqlDbType.VarChar);
				cm.Parameters .Add ("@UPassword",SqlDbType.VarChar);
				cm.Parameters .Add ("@UName",SqlDbType.VarChar );
				cm.Parameters .Add ("@Email",SqlDbType.VarChar);

				cm.Parameters ["@UID"].Value =tbx_uid.Text .ToString ();
				cm.Parameters ["@UPassword"].Value =tbx_password.Text .ToString ();
				cm.Parameters ["@UName"].Value =tbx_uname.Text .ToString ();
				cm.Parameters ["@Email"].Value =tbx_uemail.Text .ToString ();
				cm.ExecuteNonQuery ();
				//关闭连接
				cn.Close();
				Response.Redirect("default.aspx");
			}
	
		}
		//验证注册用户名的有效性
		private void ctv_uid_ServerValidate(object source, System.Web.UI.WebControls.ServerValidateEventArgs args)
		{//从文件Web.config中读取连接字符串
			string strconn= ConfigurationSettings.AppSettings["dsn"];
			//连接本地计算机的MMS数据库
			SqlConnection cn= new SqlConnection (strconn);
			cn.Open ();
			//构造SQL语句，该语句在Users表中检查用户名和密码是否正确
			string mysql= "select * from Users where Uid='"+tbx_uid.Text +"'";
			//创建Command对象
			SqlCommand cm=new SqlCommand  (mysql,cn);
			//执行ExecuteReader ()方法
			SqlDataReader dr=cm.ExecuteReader ();
			if(dr.Read ())
			{
				args.IsValid =false;//用户名已被注册
			}
			else
			{
				args.IsValid =true;//用户名尚未被注册
			}
			//关闭连接
			cn.Close();
		
		}


	}
}