ASP.NET开发简单的登入注册功能
2017-03-24 13:42:53
.net
第一步：先新建一个文件："文件"-->"新建"-->"网站"-->"ASP.Net网站"--"完成"
界面比较简单，没怎么美化，如下：
第二步：创建以上界面，代码如下，默认页面文件名Default.aspx
<%@ 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> |
第三步：制作登录验证功能
/// <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>");
}
}
}
|
第四步：制作注册功能，代码如下图：
/// <summary>
/// 用户注册
/// </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('注册成功！');</script>");
}
|
一个简单的ASP.NET的用户注册、登录功能就完成了，
