asp net barcode reader

); } } } Public BOOLisreusable {Get { return false; } } Public Static stringGetkeyvalues (stringkey) {BLL BLL=NewBLL (); DataTable DT= BLL. Getpersons (Key). tables[0];//through the keyword K (k is the front page input ID number) to the background to query the personnel information and return a result setStringBuilder SB =NewStringBuilder (); foreach(DataRow Drinchdt. Rows) {sb. Append (dr["result"]. ToString () +"\ n"); }

the page is refreshed.Although it is troublesome, the problem is solved. But there is another question: how to obtain which radio button is selected? Because these radio buttons are not server-side.The radio button is used as a form. Each time a page is submitted, you can find the key value with the radioname (radio button group name) as the key in the request. forms set. This key value is the value attribute value of the currently selected radio button. As in the preceding example, if the fi

ASP. NET calls the WS (Get) method manually:The call is simulated by hand httpwebrequest,httpwebresponse.Core code:String strurl= "Http://localhost:21696/service1.asmx/getmythod?aa=1";HttpWebRequest request= (HttpWebRequest) webrequest.creates (strURL);Request. Method= "Get"HttpWebResponse response= (System.Net.HttpWebResponse) request. GetResponse ();Stream S=response. GetResponseStream ();XmlTextReader

("a.aspx");Receiving end:UserInfo UI = session["UI"] as UserInfo;Name. Text = Ui.name;Age. Text = Ui.age;Password. Text = Ui.password;Sex. Text = Ui.sex;Session time (Destruction method: Timeout and manual destruction):The default time setting for an ASP. NET session is 20 minutes, which means the server will automatically discard session information after more than 20 minutes.Session Hijack (online refere

Phenomenon: In the Web site, open a page time is more serious, and then open another page for login verification, found that multiple HTTP requests do not respond and return values.On-line information, accidental discovery is due to the session of the lock mechanism.The original session implemented the Reader/writer lock mechanism:When the page has a writable function on the session (that is, the page has a When the page has read-only functionality to

The Json request for ASP. net mvc (post data) is too large to be deserialized (The JSON request was too large to be deserialized ), This problem does not occur in many scenarios. When you send an asynchronous request to the server (ajax) when the post data is very large (for example, when assigning permissions to a role during permission management, all I 've encountered is that this role has about 200 modu

The ASP. NET Web API displays entity Link-related aspects, apilink Sometimes, when we request an object from the server, we want to return the following format: Links :[Href: http: // localhost: 8901/api/user/diaries/2013-08-17,Rel: "self ",Method: "GET ",IsTemplated: false],CurrentDate: "2013-08-17" First, a Link-related class is abstracted: public class LinkModel{ public stirng Href{get;set;} pu

I recently studied how ASP. NET can efficiently read Excel files. The following is a summary: 1. Method 1: Use oledb to read Excel files: Use an Excel file as a data source to read data. The example is as follows:Public dataset exceltods (string path){String strconn = "provider = Microsoft. Jet. oledb.4.0;" + "Data Source =" + path + ";" + "extended properties = Excel 8.0 ;";Oledbconnection conn = new o

From: http://www.cnblogs.com/seemefly/archive/2006/04/22/381999.html Keywords: Asp.net, Word, Excel, PDF Refer to an article by netizensArticleHttp://www.vuu.cn/vuu/vuu-a/4302.html)--- ASP. net implementation to convert Word PDF Format Author: Anonymous Source: dynamic website production guide time: 2006-3-28 due to a customer's project needs to convert Word documents into PDF format, so I wrote t

=System.Text.Encoding.Default.GetBytes (Data); Message=postdata (URL, bytedata); //JavaScriptSerializer serializer = new JavaScriptSerializer (); //jsonout = serializer. Deserialize returnMessage; }Get method:Data submission /// ///Get Commit/// /// Remote server Path /// character encoding /// Public Static stringGeData (stringstrURL,stringCharSet) {HttpWebRequest Request=(HttpWebRequest) webrequest.create (strURL); Request. Method="GET"; Request. Timeout=60000; Htt

NewArgumentNullException ("ControllerContext");7 8 if(!controllercontext.httpcontext.request.contenttype.startswith ("Application/json", stringcomparison.ordinalignorecase))9 return NULL;Ten One varReader =NewStreamReader (controllerContext.HttpContext.Request.InputStream); A varBodyText =Reader. ReadToEnd (); - - returnString.IsNullOrEmpty (bodyText)?NULL:Newdictionaryvalu

The parsing Json here uses the Newtonsoft.Json.dll assembly. See Code below:Using System;Using System.Collections.Generic;Using System.Linq;Using System.Web;Using System.Data;Using Newtonsoft.json; DataTable parsing JSONpublic class Convertdatatable:jsonconverter{Public convertdatatable (){//TODO: Add constructor logic here//}public override bool Canconvert (Type objectType){Return typeof (DataTable). IsAssignableFrom (ObjectType);} public override Object Readjson (Jsonreader

　　　　 //////Cache Manager///PublicClass cachemanager:singleton, ICache {#region Private variablesPrivateStaticString _cacheprovider = ConfigConstants.FrameConfigManager.Config.Cache_Provider??"Runtimecache";PrivateICache _icache;#endregion#region Construction Method//////Class construction method, which does not support the creation of its instance object///StaticCacheManager () {}PrivateCacheManager () {Switch(_cacheprovider.tolower ()) {Case"Runtimecache": _icache =NewRuntimecache ();Break;Case

It is inevitable to learn about web development and use cookies. For reference only. I personally feel that the use of cookies and ASP. the session in. NET is very similar, except that the cookie is stored on the client and the session is on the server. Both are for recording information and serve as the credential for accessing the website. This article is only a practical operation and does not involve th

In the. NET Special-The third season "series of blogs in the first" ASP series: MVC and three-layer graphics contrast "after the publication, attracted the attention of the leadership. At the same time, the development team in the communication between the MVC and the three-tier relationship, but also feel very chaotic.Here is a sincere apology to the reader for

First, the preface 1. What the reader wants to say:(can be skipped) Here I thank those who have seen the ASP. NET's custom synchronous HTTP handler, as well as the pro of this "ASP.net custom asynchronous HTTP handler ". The previous one who might have seen MSDN will find a lot of familiar places. And I actually is a more detailed introduction, so that people better understand Ps:msdn from beginning to e