ASP.net Logion用户登陆验证代码
ASP.net Logion用户登陆验证代码 web.config
<configuration>
……
<system.web>
<database>
<add key='strConn' value='server=107.120.65.99;database=DB;uid=DB;pwd=DB' />
</database>
</system.web>
……
</configuration>
Global.asax.cs
protected void Session_End(Object sender, EventArgs e)
{
Application.Lock();
Application.Remove(Session.SessionID.ToString());
Application['OL_UserCount']=(int)Application['OL_UserCount']-1;
Application.UnLock();
}
login.aspx
<table <td colspan='2' <td><font <td><asp:TextBox CssID='txtName' Runat='server'></asp:TextBox></td></tr>
<tr> <td><font <td><asp:TextBox CssID='txtPwd' TextMode='Password' Runat='server'></asp:TextBox></td></tr>
<tr> <td><asp:Button CssID='btnSubmit' Text='login' Runat='server'></asp:Button></td>
<td><input type='reset' name='btnReset' value='reset'></td></tr>
</table>
login.aspx.cs
using System.Collections.Specialized;
using System.Data.SqlClient;
public void LoginBySQL()
{
string strConn=(String) ((NameValueCollection) Context.GetConfig('system.web/database'))['strConn'];
using (SqlConnection conn = new SqlConnection(strConn))
{
SqlCommand cmd = new SqlCommand('sp_IDPWD',conn);
cmd.CommandType=CommandType.StoredProcedure; //这里采用存储过程
cmd.Parameters.Add('@ID',SqlDbType.VarChar,20);
cmd.Parameters.Add('@PWD',SqlDbType.VarChar,20);
cmd.Parameters['@ID'].Value=txtName.Text;
cmd.Parameters['@PWD'].Value=txtPwd.Text;
conn.Open();
using (SqlDataReader dr = cmd.ExecuteReader())
{
if(dr.Read())
{
bool NotOL=true;
for(int i=0;i<Application.Count;i++)
{
if(Application[Application.GetKey(i).ToString()].ToString()==dr['UserID'].ToString())
NotOL=false;
}
if(NotOL)
{
Application[Session.SessionID.ToString()]=dr['UserID'].ToString();
Application['OL_UserCount']=(int)Application['OL_UserCount']+1;
Session['UserName']=dr['UserName'].ToString();//Sessions
Response.Redirect('./main/main.aspx');
}
else
message.Text='已经登陆';
}
else
{
message.Text='密码错误';
}
}
}
}
存储过程
ALTER PROCEDURE dbo.sp_IDPWD
(
@id varchar(20),
@pwd varchar(20)
/*@pwd datatype OUTPUT*/
)
AS
SET NOCOUNT ON
select * from [DB].[DB].[Admin] where (UserID=@id) and ([Password]=@pwd)
RETURN
