C#

In this paper, the covariance and inversion of c#4.0 new features are described, which will help us to master the c#4.0 program design. The specific analysis is as follows:First, the c#3.0 and the inverse of the previous transformationIf this is the

Remove unnecessary spaces in the string and retain one (C #), In the C # string, there are many spaces. It is required to remove unnecessary spaces and retain one. The principle is to use the Split () method for segmentation. One option is

Write Redis client by yourself (C # implementation) 3,Implementation Code (C #) 1. Send the GET command String keyGet = "SetKeyTest"; // The key StringBuilder sbSendGet = new StringBuilder (); sbSendGet. append ("* 2 \ r \ n"); // number of

C # compressing PDF images, If the document contains images, the entire document will be relatively large, occupying storage space and making it difficult to transmit files quickly and efficiently. For some PDF documents that contain a large number

Basic thread concepts, Original article: http://blog.sina.com.cn/s/blog_4e61c4290100ndyl.html   Introduction With the promotion of dual-core, quad-core and other multi-core processors, computers with multi-core processors or hyper-threading

. Net series: Events and delegation,. net series event DelegationIn the. net world, we can't do without delegation and events. In fact, it's very easy to understand. We have summarized it into six steps:1) define the delegate public delegate void

Audio Source components and related APIs, sourceapi Audio Source:Sound components. It must be used with the Audio Listener. The Main Camera will have the Audio Lisetener by default. Audio Clip:Sound fragment. Specifies the audio file to be

Data type conversion (packing and unpacking) and constants, Data Type Packing Constants Implicit conversion [automatic type conversion]:The two types must be compatible. The original value range must be smaller than the target value range, which can

Passing parameter to an event handler [stackoverflow], Q: I want to pass myListAs parameter using my event public event EventHandler _newFileEventHandler; List _filesList = new List();public void startListener(string directoryPath){

C # The difference set, Union set, intersection, and deduplication of linq ], Using System. linq; List ListA = new List (); List ListB = new List (); list ListResult = new List (); ListResult = ListA. distinct (). toList (); // deduplicated

A simple example is to understand the covariant and inverter of C, The interpretation of SolidMango is preferable for covariant inverters. For example, if you want to return the IEnumerable type, you can use IEnmerable instead. If you have an

. Net SignalR winform push broadcast, signalrwinform Recently, I am working on a project and need to use the server to actively push the data to the client. I first used my own Remoting, but later I found that I had mounted the server to the

Symmetric encryption, decryption, encryption and decryption /// /// encryption /// public static class Encrypting {# region uses symmetric encryption to decrypt private static string GetEncryptKey () {return ConfigurationManager. deleetask[

Reconstruction Method: Introduce Explaining Variable (referencing explanatory variables) and explainingvariable Total returned directory 6.5 Introduce Explaining Variable (reference explanatory Variable) Summary You have a complex expression. Put

C # Crawling images with AngleSharp,AngleSharp Introduction AngleSharp is a DLL component specially developed based on. NET (C #) to parse HTML source code. According to the html dom structure, the entire DOM has been transferred to the logical

C # -- DataGridView Add the DateTimePicker time control,Using System; using System. collections. generic; using System. componentModel; using System. data; using System. drawing; using System. linq; using System. text; using System. windows. forms;

C # obtain the system time and time format conversion, -- DateTime numeric typeSystem. DateTime currentTime = new System. DateTime ();Returns the current year, month, day, hour, minute, second, currentTime = System. DateTime. Now;Int Year =

C # Response download, // Download TransmitFile      protected  void  Button1_Click( object  sender, EventArgs e)       {           /*           Microsoft provides a new TransmitFile method for the Response object to solve the problem of using

Use C # To compile a simple notebook, Using System; using System. collections. generic; using System. componentModel; using System. data; using System. drawing; using System. linq; using System. text; using System. threading. tasks; using System.

Observer-intermediary design pattern (delegate, event implementation), Observer Design Pattern Subform 1: // Declare the delegate public delegate void SendMessageDel (string str); public partial class childform1: Form {public childform1 ()