The study of ASHX

Hey, today we rest, would like to summarize the previous two weeks of learning JavaScript and jquery, but feel good sleepy oh, did not seriously study, so did a little exercise, just began to learn HTML use in the project or pretty happy, Here is a simple summary of this small landing page.

I. Static page of HTML

"Content-type"Content="text/html; Charset=utf-8"/> <title></title> <style>form{margin-right:500px; Margin-top:10px;             width:300px;             height:300px; }    </style>"first.ashx"Method="Post"> <table> <tr><td> User name: </td><td><input type="text"Name="txtname"/></td></tr><br/> <tr><td> Secret &nbsp; code: </td><td><input type="text"Name="txtpwd"/></td></tr><br/> <tr><td><input type="Submit"Name="Submit"Value="Login"/></td> <td><input type="Button"Name="btnfindpwd"Value="Retrieve password"/></td></tr> </table> </form></body>

here is a simple HTML page that implements the style of its login interface.

two. ashx's file code

usingSystem;usingsystem.web;usingSystem.IO;usingUseiinfomodel;usingUSERINFOBLL; Public classFirst:ihttphandler { Public voidProcessRequest (HttpContext context) {context. Response.ContentType="text/html";//documents that are accepted in HTML format        stringPath = context. Request.mappath ("firsthtml.html");//get the path to the document        stringhtml = file.readalltext (path);//Reading DocumentsContext. Response.Write (HTML);//and then write it back to us is the HTML page                    stringName=context. request.form["txtname"];//Get Txtname        stringPWD = context. request.form["txtpwd"];//Get Txtpwd        if(!string. IsNullOrEmpty (name) &&!string. IsNullOrEmpty (PWD))//When the text box is not empty{USERINFOBLL BLL=NewUSERINFOBLL (); Userinfomodelcs Model= BLL. GETLOGINBYNAMEPWD (name, PWD);//Call Data            if(bll!=NULL&&string. IsNullOrEmpty (model. Username) &&string. IsNullOrEmpty (model. PWD) {context.                Response.Clear (); Context. Response.Write ("Welcome"+ model. Username +"Landing Success");//corresponding Message            }        }    }        Public BOOLisreusable {Get {            return false; }    }}

               
                < Span style= "font-family: blackbody; font-size:14pt; Background-color: #ffcc99; " > three. code for the BLL layer and the DAL layer

 Public class USERINFOBLL    {        new  userinfodal ();          Public Userinfomodelcs getloginbynamepwd (stringstring  pwd)        {            return dal. Getloginbynamepwd (NAME,PWD);        }    }

  Public classUserinfodal { PublicUserinfomodelcs Getloginbynamepwd (stringNamestringpwd) {//Id, Username, PWD            stringsql ="Select Id,username,pwd from userlogin where [email protected] and [email protected]"; Sqlparameter[] Parms={                                    NewSqlParameter ("@name", name),NewSqlParameter ("@pwd", PWD)}; SqlDataReader Reader=Dbhelp.executereader (sql,parms); Userinfomodelcs Model=NewUserinfomodelcs (); if(reader. Read ()) {model. Id= Convert.ToInt32 (reader[0]); Model. Username= reader[1].                ToString (); Model. PWD= reader[1].            ToString (); }            returnmodel; }    }

 Public Static classDbhelp {Private Static stringConnection = configurationmanager.connectionstrings["SQL"].        ToString ();  Public StaticSqlDataReader ExecuteReader (stringSqlparamssqlparameter[] parms) {SqlConnection conn=NewSqlConnection (connection); Conn.            Open (); using(SqlCommand cmd =NewSqlCommand ()) {Cmd.commandtext=SQL; Cmd.                Parameters.addrange (parms); Cmd. Connection=Conn; Cmd.commandtype=CommandType.Text; Cmd.commandtimeout=5; returncmd.            ExecuteReader (commandbehavior.closeconnection); }        }    }

 public  class   Userinfomodelcs { // id, Username, pwd
     public  int  Id {set ; get          public  string  Username {set ; get          public  string  Pwd {set ; get     

Hey, always thought that the use of ASPX to implement its data submission and response, today learned ashx feel this is very strange, the use of it is quite unfamiliar, first in the process of implementing its code is not directly and the page interaction, but all the data and the page and related to the implementation, is not very simple, hey, this is only a personal opinion, do not know everyone in the study of this time is not the feeling that, how to say that? Maybe next we have to study Ajax, learning this is much better, and the interaction of the page will be more convenient, but before also not how to contact Ajax, just see and JS in use, specific or do not understand, wrote here, the recent study of theoretical knowledge has not been summarized, Feel really need to give a little more time to understand, need to understand clearly in the summary. To continue to work hard!

The study of ASHX