asp.net登陆代码下载（ASPNET源码）

今天给各位分享asp.net登陆代码下载的知识，其中也会对ASPNET源码进行解释，如果能碰巧解决你现在面临的问题，别忘了关注本站，现在开始吧！

本文目录一览：

• 1、ASP.NET简单的登录 求代码
• 2、asp.net登录代码
• 3、asp.net---登陆代码

ASP.NET简单的登录 求代码

table

tr

td

asp:Label ID="Label1" runat="server" Text="账号："/asp:Label/td

td

asp:TextBox ID="txtUserName" runat="server"/asp:TextBox/td

/tr

tr

td

asp:Label ID="Label2" runat="server" Text="密码："/asp:Label/td

tdasp:TextBox ID="txtPwd" runat="server" TextMode="Password"/asp:TextBox/td

/tr

tr

td style="text-align:center" colspan="2"

asp:Button ID="btnSubmits" runat="server" Text="登录"

onclick="btnSubmit_Click" /

/td

/tr

/table

后台btnSubmit_Click事件

using (SqlConnection sc = new SqlConnection("Data Source=.;Initial Catalog=Test;User ID=sa;Password=yx19891126;"))

{

sc.Open();

string UserName = txtUserName.Text.Trim();

string Password = txtPwd.Text.Trim();

using (SqlCommand cmd = new SqlCommand("select * from Users where UserName='"+UserName+"' Password='"+Password+"'",sc))

{

if (cmd.ExecuteNonQuery() 0)

Response.Write("scriptalert('登录成功');/script");

else

Response.Write("scriptalert('登录失败');/script");

}

}

这是最简单的判断，一些小细节直接忽略了，你可以稍微改改让登录功能更完善

asp.net登录代码

aspx文件

在Web Form里：

加入两个Label控件,Text属性分别为“登录名”和“密码”；

加入两个TextBox控件,ID属性分别为“Userid”和“Pwd”，Text属性均为空；

加入两个RequiredFieldValidato控件，ID属性分别为“rfvUserid”和“rfvPwd”，Text属性分别为“请输入登录名！”和“请输入登录密码！”，ControlToValidate属性分别为"Userid"和"Pwd"；

加入一个Button控件,ID属性为“LogButton”，Text属性别为“登录”；

最后加入一个Label控件，ID属性为“Msg”。

Default.aspx源代码如下：

%@ Page language="c#" Codebehind="default.aspx.cs" AutoEventWireup="false" Inherits="lsj.WebForm1" %

!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"

HTML

HEAD

meta name="GENERATOR" Content="Microsoft Visual Studio 7.0"

meta name="CODE_LANGUAGE" Content="C#"

meta name="vs_defaultClientScript" content="JavaScript (ECMAScript)"

meta name="vs_targetSchema" content=""

/HEAD

body MS_POSITIONING="GridLayout"

FONT face="宋体"

form runat="server" ID="Form1"

asp:Label id="Label1" style="Z-INDEX: 101; LEFT: 82px; POSITION: absolute; TOP: 39px" runat="server" Width="55px"

Height="26px"登录名/asp:Label

asp:Label id="Label2" style="Z-INDEX: 102; LEFT: 80px; POSITION: absolute; TOP: 84px" runat="server" Width="63px" Height="24px"密 码/asp:Label

asp:TextBox id="txtuser" style="Z-INDEX: 103; LEFT: 161px; POSITION: absolute; TOP: 39px" runat="server" Width="109px" Height="25px"/asp:TextBox

asp:TextBox id="txtpsw" style="Z-INDEX: 104; LEFT: 162px; POSITION: absolute; TOP: 81px" runat="server" Width="109px" Height="22px" TextMode="Password"/asp:TextBox

asp:Button id="LogButton" style="Z-INDEX: 105; LEFT: 79px; POSITION: absolute; TOP: 125px" runat="server" Width="59px" Height="25px" Text="登 录"/asp:Button

asp:Label id="Msg" style="Z-INDEX: 106; LEFT: 161px; POSITION: absolute; TOP: 130px" runat="server" Width="117px" Height="26px"/asp:Label

asp:RequiredFieldValidator id="RequiredFieldValidator1" style="Z-INDEX: 107; LEFT: 290px; POSITION: absolute; TOP: 43px" runat="server" Width="162px" Height="18px" ErrorMessage="RequiredFieldValidator" ControlToValidate="Userid"请输入登录名！/asp:RequiredFieldValidator

asp:RequiredFieldValidator id="RequiredFieldValidator2" style="Z-INDEX: 108; LEFT: 292px; POSITION: absolute; TOP: 83px" runat="server" Width="175px" Height="22px" ErrorMessage="RequiredFieldValidator" ControlToValidate="Pwd"请输入登录密码！/asp:RequiredFieldValidator

/form

/FONT

/body

/HTML

cs文件

using System.Data.Sqlclient;

if(txtuser.Text!="" txtpsw.Text!="")

{ string connsql ="Data Source=(local);Database=StuManger; User id=sa; password=123456";//连接字符串，看着改

SqlConnection conn=new SqlConnection(connsql);

try

{

conn.Open();

}

catch(Exception ex)

{

Response.Write(ex.Message);

return;

}

string mysql="select * from [user] where userName='"+txtuser.Text+"' and psWord='"+txtpsw.Text+""; //表名和字段名也看着改

SqlCommand cmd=new SqlCommand(mysql,conn);

SqlDataReader dr=cmd.ExecuteReader();

if(dr.Read())

{

Response.Write("欢迎进入！");

}

else

{

Response.Write("对不起，您的用户名或密码不正确！");

}

conn.Close();

}

else

{

//Response.Write("用户名或密码不能为空！");

Response.Write("Script Language='JavaScript' window.alert('用户名或密码不能为空！')/Script");

return;

}

asp.net---登陆代码

这应该是最简单的了..不用类..也不用子函数.

protected void Button1_Click(object sender, EventArgs e)

{

string tccuser = this.tccuser.Text.ToString();

string tccpass = this.tccpass.Text.ToString();

string cmdstring = "select * from tcclogin where tccuser = '"+tccuser+"' and tccpass='"+tccpass+"'";

SqlConnection connection = new SqlConnection(connstring);

SqlCommand sqlcmd = new SqlCommand(cmdstring, connection);

SqlDataReader rd;

connection.Open();

rd = sqlcmd.ExecuteReader();

if (rd.Read())

{

Session["username"] = tccuser;

Response.Redirect("index.aspx");

}

else

{

this.Label17.Text = "Wrong username or password!";

}

}

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