register.aspx.cs

SP.NET经典案例源码之用户管理系统 实现用户的注册、分级管理

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 partial class register : System.Web.UI.Page
	{
	
		protected void Page_Load(object sender, System.EventArgs e)
		{	//绑定城市信息下拉列表框
			if(!IsPostBack)
			{	string strconn=ConfigurationSettings.AppSettings["dsn"];
				//连接本地计算机的MMS数据库
				SqlConnection cn0= new SqlConnection (strconn);
				cn0.Open ();
				string mysql="select * from city ";
				SqlCommand cm=new SqlCommand  (mysql,cn0);
				SqlDataReader dr=cm.ExecuteReader ();
				while(dr.Read ())
				{
					ddl_ucityid.Items .Add (new ListItem(dr["cname"].ToString(),dr["cid"].ToString()) );
				}
				cn0.Close ();
			}
		}

		#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.ctv_uid.ServerValidate += new System.Web.UI.WebControls.ServerValidateEventHandler(this.ctv_uid_ServerValidate);

		}
		#endregion

		protected 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.NVarChar);
				cm.Parameters .Add ("@UPassword",SqlDbType.NVarChar);
				cm.Parameters .Add ("@UQuestion",SqlDbType.NVarChar);
				cm.Parameters .Add ("@UAnswer",SqlDbType.VarChar);
				cm.Parameters .Add ("@USex",SqlDbType.Bit );
				cm.Parameters .Add ("@UCitiID",SqlDbType.Int );
				cm.Parameters .Add ("@Email",SqlDbType.VarChar);

				cm.Parameters ["@UID"].Value =tbx_uid.Text .ToString ();
				cm.Parameters ["@UPassword"].Value =tbx_password.Text .ToString ();
				cm.Parameters ["@UQuestion"].Value =tbx_uquestion.Text .ToString ();
				cm.Parameters ["@UAnswer"].Value =tbx_uanswer.Text .ToString ();
				if(rtn_male.Checked ) cm.Parameters ["@USex"].Value=1;
				if(rtn_female.Checked ) cm.Parameters ["@USex"].Value=0;
				cm.Parameters ["@UCitiID"].Value =ddl_ucityid.SelectedItem .Value ;
				cm.Parameters ["@Email"].Value =tbx_uid.Text .ToString ();
				cm.ExecuteNonQuery ();
				//关闭连接
				cn.Close();
				Response.Redirect("registersuccess.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();
		
		}


	}
}