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ASP.NET登錄注冊(cè)頁(yè)面實(shí)現(xiàn)

更新時(shí)間：2015年10月12日 11:54:31 作者：IT_xiao小巫

這篇文章主要介紹了ASP.NET登錄注冊(cè)頁(yè)面如何實(shí)現(xiàn)，感興趣的小伙伴們可以參考一下

如何利用Visual studio 2010創(chuàng)建一個(gè)ASP網(wǎng)站？
【文件】-->【新建】-->【網(wǎng)站】-->【ASP.Net網(wǎng)站】--【完成】

默認(rèn)頁(yè)面Default.aspx
創(chuàng)建以上界面：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="UserLogin.aspx.cs" Inherits="UserLogin" %> 
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head runat="server"> 
 <title></title> 
</head> 
<body> 
 <div align="center"> 
 <h1>用戶登錄頁(yè)面</h1> 
 <form id="form1" runat="server"> 
  <p> <asp:Label ID="lbusername" runat="server">用戶名：</asp:Label> 
   <asp:TextBox ID="tbusername" runat="server"></asp:TextBox> 
   </p> 
 
  <p> <asp:Label ID="lbpsw" runat="server">密 碼：</asp:Label> 
  <asp:TextBox ID="tbpsw" runat="server" TextMode="Password"></asp:TextBox> 
  </p> 
  <p><asp:Button ID="btnLogin" runat="server" Text="登錄" onclick="btnLogin_Click" /> 
   <asp:Button ID="btnCancel" runat="server" Text="取消" onclick="btnCancel_Click" /> 
  </p> 
 </form> 
 </div> 
</body> 
</html>

登錄驗(yàn)證功能

/// <summary> 
 /// 用戶登錄 
 /// </summary> 
 /// <param name="sender"></param> 
 /// <param name="e"></param> 
 protected void btnLogin_Click(object sender, EventArgs e) 
 { 
  if (tbusername.Text == "") 
  { 
   Response.Write(@"<script>alert('用戶名不能為空！');</script>"); 
  } 
  if (tbpsw.Text == "") 
  { 
   Response.Write(@"<script>alert('密碼不能為空！');</script>"); 
  } 
  string username = tbusername.Text; 
  string password = tbpsw.Text; 
  string sql = "select * from T_user where username=@username and password=@password"; 
  SqlParameter[] parameters = { new SqlParameter("@username",username), new SqlParameter("@password", password) }; 
  using (SqlConnection conn = new SqlConnection(connstr)) 
  { 
   conn.Open(); 
   using (SqlCommand cmd = conn.CreateCommand()) 
   { 
    cmd.CommandText = sql; 
    cmd.Parameters.AddRange(parameters); 
    DataSet ds = new DataSet(); 
    SqlDataAdapter adapter = new SqlDataAdapter(cmd); 
    adapter.Fill(ds); 
    DataTable table = ds.Tables[0]; 
    if(table != null) 
     Response.Write(@"<script>alert('登錄成功！');</script>"); 
    else 
     Response.Write(@"<script>alert('登錄失??！');</script>"); 
 
   } 
  } 
 
   
 }

注冊(cè)功能

/// <summary> 
 /// 用戶注冊(cè) 
 /// </summary> 
 /// <param name="sender"></param> 
 /// <param name="e"></param> 
 protected void brnRegister_Click(object sender, EventArgs e) 
 { 
  string username = tbusername.Text; 
  string password = tbpsw.Text; 
  string sql = "Insert into T_user(username, password) values(@username,@password)"; 
  SqlParameter[] parameters = { new SqlParameter("@username", username), new SqlParameter("@password", password) }; 
  using (SqlConnection conn = new SqlConnection(connstr)) 
  { 
   conn.Open(); 
   using (SqlCommand cmd = conn.CreateCommand()) 
   { 
    cmd.CommandText = sql; 
    cmd.Parameters.AddRange(parameters); 
    cmd.ExecuteNonQuery(); 
   } 
  } 
 
  Response.Write(@"<script>alert('注冊(cè)成功！');</script>"); 
 }

知識(shí)點(diǎn)歸納：
1.如何創(chuàng)建一個(gè)ASP.Net網(wǎng)站
2. 使用服務(wù)器控件實(shí)現(xiàn)界面設(shè)計(jì)
3. 對(duì)數(shù)據(jù)庫(kù)的簡(jiǎn)單操作

一個(gè)簡(jiǎn)單的用戶注冊(cè)、登錄就完成了，通過(guò)這個(gè)案例希望對(duì)大家的學(xué)習(xí)有所幫助。

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