if file exists

Using system;Using system. Collections. Generic;Using system. text;Using system. IO;Using icsharpcode. sharpziplib. checksums;Using icsharpcode. sharpziplib. Zip. compression;Using icsharpcode. sharpziplib. Zip. Compression. streams;Using

Export (Oracle) database tables to excel and generate files (C # implementation) Keywords: C #, ASP. NET, Excel Add a project reference: 1.. Net-> system. Data. oracleclient. dll 2. com-> Microsoft Excel 11.0 Object Library CodeAs follows:

// Yang Chun// 2008-7-10// Delete all files in the specified directory to process the cached files generated by the pie chart column. Using system;Using system. Data;Using system. IO;Using system. Data. sqlclient; /// /// Summary of deletefile///

SilverlightUpload files Silverlight does not support local file creation and other related operations. When uploading a file, you can first read the file into a byte array and then call the Web Service for upload.The specific implementation is as

I. Upload and play audio files Find a third-party control named aspnetpager on the Internet and reference the aspnetpager. dll file to the bin of the project. It can be called directly on the webpage. Reference namespace using telerik. webcontrols;

In a recent chess and card game, the leader said that the chat content on the client should be able to be pronounced, that is, the text sent by the player should be automatically read, if the voice package is integrated into the client, the Client

Using system;Using system. Collections. Generic;Using system. text;Using system. xml;Using system. IO;Using system. net;Using system. Web;Using insapp. word; Namespace insapp. Websearch{ Public class readwebsitexml{/// Read the website

From http://www.cnblogs.com/think8848/archive/2011/03/15/1984793.html   Sorting in April March 22: For practical examples, see:Here Multi-language support is basically a feature that must be supported by mature products. However, when I

CopyCode The Code is as follows: using system; Using system. IO; Using system. Threading; Using system. Windows. forms; Using system. net; Namespace trojanmonitor { Public partial class form1: Form { Public form1 () { Initializecomponent

How Java-based Web servers work 1 A Web server, also known as an HTTP server, communicates with clients over HTTP. This client usually refers to a web browser. A Java-based Web server uses two important classes: java.net. socket and java.net.

Recently, a project needs to convert files (such as Word, Excel, txt, and image) to PDF files. After searching the documents, there are many implementation methods, such as calling a virtual printer for conversion, use third-party components (such

Web. config configuration code in the WebService Project Imageservice. asmx code in the WebService Project/// /// Download file handler in WebService/// /// file path /// returned file stream [Webmethod (description = "download server site file,

This is a simple example that contains the sender and receiver. The sender sends the file name and content to the receiver, and the receiver saves the received file on the disk. The receiving end can receive files from multiple sending ends at the

I ItsThe basic usage of jfilechooser is still very simple. The following two examples show how to use jfilechooser. If you want to add some functions, you can add a filter to display only the filtered files.When saving the file, if the file

1. Obtain information entered by the console user    Public String getinputmessage () throws ioexception ...{        System. Out. println ("Enter your command ");        Byte buffer [] = new byte [1024];        Int COUNT = system. In. Read (buffer );

Of course, you must first create a table and corresponding columns for saving images in the database. The data format is blob. package com.lizhe; 　　import Java.io.*; 　　import java.sql.*; 　　public class PutImg { 　　public void putimg() {

@ Import Java. io. bufferedwriter; import Java. io. bytearrayoutputstream; import Java. io. file; import Java. io. fileinputstream; import Java. io. filenotfoundexception; import Java. io. filewriter; import Java. io. ioexception; /*** text file

Use the Profile File to record the latest File path opened by JFileChooser (or File control, I. Description After we use the JFileChooser or File control to open files in the Windows System directory, how can we save the path of the File we recently

Android Camera Photo Samsung BUG Summary Android Camera Samsung BUG: Recently, the camera function was used in the Android project. The mobile phone of the Android model runs successfully, but the camera of Samsung encounters a bug. The BUG details

Three methods for file upload-Java and java Because of the need to upload files in the project (SpringMvc started in jetty embedded) in which you are in charge, you have never touched on the java file upload and are vague about the Http protocol,