C#

When working on a project, I need to compress and decompress the file. I was so patient that I finally found a way to study it. The two classes for File compression and decompression are rewritten for their own needs, namely ZipClass and UnZipClass.

Scenario 1String s = "Test ";String t = string. Copy (s );Console. WriteLine (s = t );Console. WriteLine (object) s = (object) t );The output is true and false. Case 2String s = "Test ";String t = s;Console. WriteLine (s = t );Console. WriteLine

1 using System;2 using System. Text. RegularExpressions;34 namespace Hongcing5 {6 /// 7 // authenticate your citizenship number/ID card number8 /// 9 public static class VerifyIdCard10 {11 static readonly int [] iW = {7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7

At the beginning, I learned C # and wrote some simple console applications: Reading, processing, and writing files. The concepts and usage of File, FileInfo, FileStream, and StreamReader are confusing all the time. I will summarize them today. In

  In fact, it is quite easy to operate a web page in WebBrowser, which can easily implement custom Website access habits. WebBrowser, after all, is the encapsulation of the native control of MS. When we use the WebBrowser under C #, especially in

In multithreading, to maintain data consistency, you must lock the data or function that accesses the data. This is common in the database, but most of the programs are single-threaded, therefore, there is no need for locking, but in multithreading,

Requirement There is a fixed URL file which will be updated regularly by the server program. Now you need to write a tool to monitor the file changes.  Solution At first, I thought of downloading the file, and then determining whether the file is

Private List _ serialNumber = new List ();/// /// Call this function to store the serial numbers of all USB disks on the local machine to _ serialNumber./// Private void matchDriveLetterWithSerial (){String [] diskArray;String driveNumber;Var

Using System;Using System. Collections. Generic;Using System. Text;Using System. Web;Using System. Net. Mail;Using System. Net;Namespace Pub. Class{/// /// Email sending/// Public class Email{# Region private memberPrivate static object lockHelper =

The main classes used are HttpListener and StreamWriter.HttpListener: Use HttpListener to create a simple HTTP listener that responds to HTTP requests. In fact, HttpListener only implements a simple encapsulation class on the server Socket. Set the

Using System; Using System. Collections; Using System. ComponentModel; Using System. Data; Using System. Drawing; Using System. Web; Using System. Web. SessionState; Using System. Web. UI; Using System. Web. UI. WebControls; Using

The error message is as follows:A server error occurs in the "/src" application. The specified conversion is invalid.   Note:An error occurred while executing the current Web request. Check the stack trace information for details about the

C # sister: Wow, the path is narrow. Isn't this an Objective-C aunt's dog?Dog: Who is it ..C # sister: Not convinced ~ Let's get you another toast ..View sourceprint? 01 # import 02 # import "Dog. h" 03 04 int main (int argc, const char * argv []) 0

I was impressed by a multiple-choice question, as shown in the following figure: The sequence in which an X-type object is instantiated: A. Call the X-Type constructor, call the constructor of the X-type base class, and call the constructor of the X-

I often see my colleagues write code like this: DataSet QueryDB (){DataSet ds = null; Try{// Do something}Catch (Exception ex){// Logs must be recorded here} Return ds;} There are several questions: 1: Obviously, if the QueryDB method has any

Starting from a small example: View sourceprint? 1 int [] intArray = new int [] {2, 3, 6, 1, 4, 5 }; 2 Array. Sort (intArray ); 3 Array. ForEach (intArray, (I) => Console. WriteLine (I )); This example defines an int Array, uses the Array. Sort

  // Basic Socket programming   // Server:   Using System. Net;   Using System. Net. Sockets;   Using System. Text;   Using System. Threading;       Thread mythread;   Socket socket;     // Clear all resources in use.   Protected override void

    In daily projects, it is very common to import data in Excel, Word, txt, and other formats to the database. Here I will make a summary   This section describes how to import SQL Server, Oracle database, and WinForm into SQL Server and Oracle

  There have been few blog posts in the last two days .. This example is too long. The following is a reference to guide this example: The rules are as follows: (1) players compete with each other at the same table over the internet. One player

We will continue to discuss C # With you today. Today we will talk about the circular structure in C. I want to see the loop structure in all languages! Because the loop structure is a good method that saves time and effort! Therefore, it is common