C#

namespaces: System.DiagnosticsStopwatch Instances can measure the elapsed time of a single time interval, or they can measure the total elapsed time of multiple time intervals. In a typical Stopwatch scenario, call the start method, then call the

1. Automatic attribute default initializationUsing code Public string Get Set " 001 ";Compiler-Generated code: Public classCustomer {[compilergenerated]Private stringKbackingfield ="Hello World"; PublicCustomer () { This. Kbackingfield ="Hello

Task. FromResult Application Scenario example: task. fromresult   Task. FromResult is used to create a completed Task with a returned value.   Scenario 1: Synchronous implementation of an asynchronous Interface Method   For example, an

C # Excel import and export, This article describes how to import and export C # Excel files.Directory 1. Introduction: Describes the third-party class library NPOI and the Excel structure. 2. Excel import: describes how to use NPOI to import an

Create simple Telnet instance and telnet instance Step 1 first add SuperSocket. Common. dll, SuperSocket. SocketBase. dll, SuperSocket. SocketEngine. dll, log4net. dll, System. Threading. dll. At the same time, you also need to introduce System.

Static variables and variables The ease of using static variables leads to System bugs. Background: Global static variables are defined in the background of the page to save the data displayed on the foreground. Symptom: when multiple users

Trace and trace Click to download sample code String. Format: the signature of the load method is as follows: 1 public static string Format(2 IFormatProvider provider,3 string format,4 params Object[] args5 ) You can use the custom

C # Event Learning diary, The reason for the event keyword is to simplify the construction of custom methods to add and delete methods for the delegated call list. When the compiler processes the event keyword, it automatically provides the

C # Lambda expression learning diary, Lambda expressions only use a simpler way to write anonymous methods, which completely simplifies the use of. NET Delegate types. Now, if we want to use the FindAll () method of the generic List <>, this method

Parallel and PLINQ: parallelplinq Parallel is a simplified Task usage. It contains three static methods: Parallel. For, Parallel. ForEach, and Parallel. Invoke. PLINQ is a parallel version of LINQ. The following are simple examples and precautions

Parallel Stop and Break, parallelstopbreak In a common for loop or foreach loop, break/continue is used for process control. In Parallel, there are also methods for process control, that is, the Stop/Break method of the ParallelLoopState class.1.

C # NamePipe usage SummaryThe named pipeline in C # was recently used in a project, so I will write a summary here. Why use a named pipe? To exchange data between two programs. Assume that the following scenario is used. On the same PC, program A

Use fuse design mode protection software, fuse design mode Protection As software developers, our life is fast-paced. We adopt agile software development methods, develop our software functions iteratively, and submit for testing after development,

C # automatically select the most suitable IP address in the systemThis is because this problem has been encountered many times for a long time, but it is not taken seriously. This time I encountered this old problem, but Baidu did not get it

Using usage in C # I wrote an example about how to use wcf. There is a using () {} sentence in it. In the past, using not only references namespaces, but also has other functions.   The using keyword is used in C # in three ways:1. Used in

Parent class and subclass inheritance   1. ----- Constructor   Public class Human () { Public Human () { Console. Write ("Human Constructure Function "); } } Public Class Chinese (): Human { Public Chinese () { Console. Write

Mono C # a bug in the CompilerProblem Source One of my most recent projects was developed in C. This project is divided into the following parts: MySQL 5.5.23 database running in SUSE Linux Enterprise Server 11 SP1. The backend batch program

Character encoding in C # The file is encoded as GB18030, and the width of each line is 23 characters. Column 1-8 is the employee name, and column 10-23 is the salary. Now we need to write a C # program to calculate the average salary of the

How to rewrite some default WebApi rulesWhy? Recently, the company has been promoting the SOA framework. For the first time, I have been very familiar with this technology (but I still ignore it). I feel pretty good. I just want to make some effort

C #. Transactions in SQL, C # Method 1:TransactionOptions transactionOption = new TransactionOptions (); // sets the transaction isolation level transactionOption. isolationLevel = System. transactions. isolationLevel. readCommitted; // set the