C#

Original addressTalk about. The covariance and contravariance in netOn covariance and contravariance, we should start with object-oriented inheritance. An inheritance relationship is a relationship between a child class and a parent class, and a

First of all, explain the principle of using the Socket Interface network communication, where the most commonly used C/s mode as an example, first, the server has a process (or multiple processes) on the specified port waiting for the client to

Definition and usage The CopyFile method copies one or more files from one location to another. Grammar: Filesystemobject.copyfile Source,destination[,overwrite] Parameter description Source is required. The file to be copied (wildcard

This article mainly for you in detail the WinForm SaveFileDialog Save the File dialog box relevant information, with a certain reference value, interested in small partners can refer to SaveFileDialog is used to save the file for your reference,

This article mainly introduces the use of Dapperextensions and reflection in ASP. NET to achieve a general search function, very good, with reference to solve the value, the need for friends can refer to the following Objective Search function is a

This article mainly introduces the steps to deploy the. NET core environment under Linux, gives a detailed introduction, I believe that everyone's study or work has a certain reference value, the need for friends to see together below. Note:

This article introduces the implementation of ASP. NET picture Verification code, the code is easy to understand, very good, with reference value, the need for reference of friends This article to share a piece of ASP. NET code Implementation

In an ASP. NET core application, the consolidation of the third-party DI framework can be achieved by returning a serviceprovider to the Configureservices method that defines the startup type. But it is not so easy, the following examples to share

Sealed's Chinese meaning is sealed, so the name is justified, that is, the class or method modified by it will not be inherited or rewritten. Sealed the role of the keyword:Using sealed in a class declaration prevents other classes from inheriting

The session is a way to save the conversation state of the user and the Web app, and ASP. NET core provides a middleware for managing session state, this article mainly introduces the use of sessions in ASP. Objective 2017 was a silent start, and 20

This article mainly for you in detail the Visual Studio 2015 OpenGL Library Configuration tutorial, with a certain reference value, interested in small partners can refer to Write in front: The recent use of OpenGL, just under the VS2015

Today, I saw a friend on the internet asking the difference between ASP and ASP. Editor I also from the ASP to. NET, a few years, almost forget the existence of the ASP, also can not say the difference between them, because the feeling of the two

This article describes the two ways to convert. aspx to. htm, a friend you need can refer to, and hope to help you Method one: Based on template generation, remain in HTML folderThinking Analysis:1. Write a custom HTM template where you need to

The Repeater control is a data-bound container control that generates a list of items and can use templates to define the layout of individual items on a Web page. This article is described in detail, following the small series together to see

Using System;Namespace My.utils {Date Operations Common toolspublic class Dateutils {Public Dateutils () {}Year difference of comparison date Start date year difference from current date public static int Diffyear (string start) {Return Diffyear

Are you an excellent software developer? Do you know grasp? GRASP software development model, full name generic duty distribution software model (general Responsibility Assignment software Patterns), is with the famous software model Gof (Gang of

Sharppcap dll Download Address: Sourceforge.net/directory/os:windows/?q=sharppcap Detailed usage: Www.codeproject.com/KB/IP/sharppcap.aspx To further illustrate how to use this, share a wrapper class that I wrote. Using system;using

How to disable port 445 and port 445 Some ports in the system are usually unavailable but dangerous, such as ports 139, 135, and 445. windows is open by default. In this case, you can manually close these ports! Next we will introduce a windows

VS2017 mobile development (Android and IOS), vs2017android Collation　 The company asked C # To develop mobile apps. The boss thought that C # would be faster... From scratch, I have been tossing for more than a week, reinstalling the system three

C # determine whether a local file or network file exists,File. Exists method (String) Determines whether the specified file exists. Namespace:System. IOAssembly:Mscorlib (located in mscorlib. dll)Parameters Path Type: System. String