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filereadword=new StreamReader (Fileread,system.text.encoding.default);String oldstring = Filereadword.readtoend (). ToString ();oldstring = oldstring + Writeword;Re-write the new contentStreamWriter filewrite=new StreamWriter (Fileread,system.text.encoding.default);Filewrite.write (Writeword);Shut downFilewrite.close ();Filereadword.close ();Fileread.close ();}Catch{Throw}}/**////Append content to the file//////public string Readerfiledata (string filepathname){Try{FileStream fileread=new FileS

There are many useful libraries in. NET to read and write files on your hard disk. Commonly used are:File:1. When to use: when the read and write pieces are small size, and can be read and write operations at the same time to use2. Different ways to read and write file types are not the same.ReadAllBytes () Writeallbyte (): can read and write any type of file (FileStream is encapsulated)ReadAllLines () Read

ASP. NET MVC4 uses uploadify. js to upload multiple files, mvc4uploadify. js Page code: 1. Introduce js and css files 2. Code in the body Background code: Public ActionResult loadFileInfo () {StringBuilder sb = new StringBuilder (); DirectoryInfo theFolder = new DirectoryInfo (Server. MapPath ("~ /UploadFile/"); DirectoryInfo [] dirInfo = theFolder. getDirector

To modify the Webcong file: The following is the referenced content: Which is closely related to uploading: maxRequestLength Indicates the maximum file upload size supported by ASP. This restriction can be used to prevent denial of service attacks that result from the user passing a large number of files to the server. The specified size is in kilobytes. The default value is 4096 KB (4 MB). Executiontimeout Indicates the maximum number of seconds th

Front-end code:"/test/getfilepath"> Background code: Public Class test{publicstring GetFilePath () {return' http://192.168.0.1//upload//file 1.doc " ;}}If this a tag directly assigns the file address to the HREF, some files are opened directly instead of downloaded, for example:. txt,.pdf format;So I changed the backend back string to return as a stream, as in the following example: PublicActionResult GetFilePath (stringa_id) { stringPath

When you finish a task today, you need to iterate through all the TXT files and search for a long time to finally get a convenient way. foreach (String o in Directory.getdirectories (@ "D:\Logs"){foreach (String i in Directory.GetFiles (o)){FileInfo fi = new FileInfo (i);if (FI. Extension.equals (". txt")){Here I can manipulate the txt file I got to meet the conditions}}} ? Fi. Extension.equals (". txt"),

Implement site configuration files and XML serialization using xml serialization and Asp. Net Web Cache We often encounter such scenarios:We have a business today. We need to add a field, but there may be changes in the future. We need to configure it as "active.In general, the initial method is to add a configuration to the AppSettings of the Web. Config file. However, there is a problem, that is, to chang

Two ways to create XML files in. NetMethod 1: Build the XML document in step-by-piece with XML structure, save the file (Dynamic mode)Method 2: Load the XML structure directly, save the file (fixed mode)Method 1: Create an XML document dynamicallyBuild the XML document structure based on the values passed1. Create an entity class to save the values passed by the formUsing system;using system.collections.generic;using system.linq;using system.text;usin

DotNetZip on codeplex:http://dotnetzip.codeplex.com/Detailed can look at the source code ... Overall it feels better than sharpziplib. and DotNetZip supports vb,c# as well as any. NET language.Pressure: (stolen from the CodePlex) using(ZipFile zip =NewZipFile ()) { //Add this map file to the "Images" directory in the ZIP archive adds this PNG to the "Images" directory of the ZIP archiveZip. AddFile ("C:\\images\\personal\\7440-n49th.png","Images")

A WinForm. NET program written a few days before the program. Because there are a lot of references to library files, these libraries have recently been fixed with bugs and algorithms. But the main program file is not changed. So it's not like recompiling the main program. So you copy all the new version of the DLL file to the running directory, you want the main program to directly call the new version of

In the. net environment, some methods for extracting Text from PDF files are summarized. 1. IKVM version of Consumer box: As far as I know, only IKVM version of Consumer box can better extract text from PDF. For more information about consumer box, visit the http://www.pdbox.org, see http://www.codeproject.com/csharp/4102text.asp; on CodeProject;2. Use the Acrobat SDK (this price is not cheap );3. XPDF: if

Use the HttpWebRequest class and HttpWebResponse class in. Net to obtain web files, String url = "http://pic.maizuo.com/usr/100002174/0e495857e71e57b9486aecec788d557e.tmp ";WebRequest wreq = WebRequest. Create (url );WebResponse wres = wreq. GetResponse ();Long len = wres. ContentLength;Byte [] bytes = new byte [len];Stream ss = wres. GetResponseStream ();String path = Server. MapPath ("~ /Images /");If (!

1. Download the Pdfobject.js file2.12 3"divpdfcontent"style="height:860px; margin-top:5px; z-index:-9999 ;">4class="Pdfobject"Src=''Type="application/pdf"style="Overflow:auto; width:100%; height:100% ;">53.1 protected string getimagesrc () 2 {3 string"showimage.aspx?id=" + Imageid.tostring (); 4 return SSRC; 5 }4.1 //Read the file2byte[] content = File.readallbytes (Server.MapPath (sql.tostring (rdr["ImagePath"])));3Response.ContentType =Sfiletype;4Res

If you do not set the Web API to return data formatters, browser access to the interface will be different from the browser and different forms of results, because the default header of IE browser is Application/json, so when using IE browser to access the interface, You always need to download the JSON file. Of course you can also modify the return data form on the server.In the Application_Start () method of the global file, add the following phrase:Change the header to "text/json" and the d

1 Set c:windows\temp Directory access rights temp--> Properties--security--> Add Network Service--and give it permission to read and write--ok(Note: The operating system for Windows Server2003 Framework version 1.1 and above)2 Set permissions for the Bin folder in the program directory of the publishing site to also add the network service and set permissions to read, runCS0016: Failed to write output file "C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.

/8); Aes.iv= key. GetBytes (AES. BlockSize/8); Aes. Mode=CIPHERMODE.CBC; ICryptoTransform Transform=AES. CreateDecryptor (AES. Key, AES.IV); using(varDest =NewFileStream (destFileName, FileMode.CreateNew, FileAccess.Write, Fileshare.none)) { using(varCryptoStream =NewCryptoStream (dest, Transform, CryptoStreamMode.Write)) { Try { using(varSource =NewFileStream (Srcfilename, FileMode.Open, FileAccess.Read, File

. Net encapsulates js files into dll and calls them on the page1. Open vs and create a webapplication1 project [here you can also create a website]. Use the default settings. 2. Add a new project in the current solution. (Class Library: jslib) After the file is added, a class. cs file is created by default. We will rename it to [referenceclientscript. cs], which will be used later. 3. Because the new class

)); Context. Response.appendheader ("ETag", "never_modify"); Context. Response.Cache.SetETag ("never_modify"); Context. Response.Cache.SetLastModified (DateTime.Now.AddMinutes ( -1)); Context. Response.TransmitFile (FilePath);To modify the download method:FileStream fs = new FileStream (FilePath, FileMode.Open); byte[] bytes = new byte[(int) fs. Length]; Fs. Read (bytes, 0, bytes. Length); Fs

usingSystem;usingSystem.Collections.Generic;usingsystem.web;usingSystem.Web.UI;usingSystem.Web.UI.WebControls;usingSystem.IO; Public Partial classadmin_default:system.web.ui.page{protected voidPage_Load (Objectsender, EventArgs e) { stringPath = Server.MapPath ("/ceshi/"); DirectoryInfo di=NewDirectoryInfo (path); //Locate the file in this directoryfileinfo[] FIS =di. GetFiles (); foreach(FileInfo fiinchFIS) { Response.Write (FI. Name); Response.Write ("

In. Net winform, there is no hosted music player. APIs can only play in WAV format. For MP3 and other audio files, it depends on mediaplayer. Usage: Right-click the toolbox, select "choose items", switch to the com page, find Windows Media Player, select, and OK In toolbox, drag and drop the mediaplayer control you just added to winform. Code: Axwindowsmediaplayer1.url ="File Path, network path s