ASP.NET登录注册页面实现登录注册页面实现
主要介绍了ASP.NET登录注册页面如何实现，感兴趣的小伙伴们可以参考一下
如何利用Visual studio 2010创建一个ASP网站？
【文件】-->【新建】-->【网站】-->【ASP.Net网站】--【完成】
默认页面默认页面Default.aspx
创建以上界面：
<%@ 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>用户登录页面</h1>
<form id="form1" runat="server">
<p> <asp:Label ID="lbusername" runat="server">用户名：</asp:Label>
<asp:TextBox ID="tbusername" runat="server"></asp:TextBox>
</p>
<p> <asp:Label ID="lbpsw" runat="server">密 码：</asp:Label>
<asp:TextBox ID="tbpsw" runat="server" TextMode="Password"></asp:TextBox>
</p>
<p><asp:Button ID="btnLogin" runat="server" Text="登录" onclick="btnLogin_Click" />
<asp:Button ID="btnCancel" runat="server" Text="取消" onclick="btnCancel_Click" />
</p>
</form>
</div>
</body>
</html>
登录验证功能登录验证功能
/// <summary>
/// 用户登录
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btnLogin_Click(object sender, EventArgs e)
{
if (tbusername.Text == "")
{
Response.Write(@"<script>alert('用户名不能为空！');</script>");
}
if (tbpsw.Text == "")
{
Response.Write(@"<script>alert('密码不能为空！');</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('登录成功！');</script>");
else
Response.Write(@"<script>alert('登录失败！');</script>");
}
}
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