ASP.net Logion使用者登陸驗證代碼

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上載者:User
asp.net

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 class="logintable">


<tr>    <td colspan="2" class="tdcaption"><font class="fcaption">ログイン</font></td></tr>


<tr>        <td><font class="font100">ユーザーID:</font></td></tr>


        <td><asp:TextBox CssClass="itxt" ID="txtName" Runat="server"></asp:TextBox></td></tr>


<tr>        <td><font class="font100">パスワード:</font></td>


        <td><asp:TextBox CssClass="itxt" ID="txtPwd" TextMode="Password" Runat="server"></asp:TextBox></td></tr>


<tr>        <td><asp:Button CssClass="ibutton" ID="btnSubmit" Text="login" Runat="server"></asp:Button></td>


        <td><input type="reset" class="ibutton" 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;    //這裡採用預存程序


         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="已經登陸";


             }


             else


             ...{


                message.Text="密碼錯誤";


             }


        }


    }


}


預存程序
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

 



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