.Net Core

Prepare a class for calling at Start.Public static class MyPreApplicationStart{Public static void RegisterGlobalFilters (GlobalFilterCollection filters){If (filters! = Null)Filters. Add (new HandleErrorAttribute ());} Public static void Start

PrefaceIn B/S system development, "authentication" is often required ". Because web applications are very special and different from traditional C/S programs, by default (no authentication or permission control measures are used ), when your

View Code of the source file  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; Namespace WindowsFormsApplication1

I. How events runThe event receiver has a method to execute the event processing program when a registered event occurs and use the delegate as the intermediary between the sender and receiver. The sender defines the delegate to be used by the

1. Variable Declaration: int n = 0;The declaration must be assigned a value;Multi-variable Declaration: int a = 1; B = 2Type inference: var a = 1;The compiler automatically deduce the variable type based on the value. This sentence is equivalent to

Readonly indicates read-only, and const indicates constantI. They are used to identify constants. 2. const must be assigned a value while being declared;Readonly can be assigned a value during initialization. Therefore, the readonly field may have

Aspect-oriented programming (aspect-oriented programming, AOP) is a term in computer science and refers to a programming paradigm. This model is based on a language structure called the side (aspect), and the side is a new modular mechanism, used to

In asp.net, the server control automatically generates the ID and name attributes. Therefore, it is more difficult to use javascrip to achieve full selection.By searching for information, I think it is relatively simple to use javascrip + jquery in

In winform, only one instance can be run in this way:1. First, add the following namespace:Using System. Threading;2. modify the system Main function as follows:Bool bCreatedNew;// Create a new mutex using specific mutex nameMutex m = new Mutex

I. Concept of cache: Benefits and types of cache.Cache is a technology that exchanges space for time. In other words, it stores your data in the memory for a period of time, in this short period of time, the server does not read the database or the

In the past few days, I have been developing code on the java server and using the nio framework. Currently, mina and netty are better. After comparison, I chose netty as our development framework. The most important document to learn about netty is

Simple three-step Image Upload without refreshing: Pay attention to the upload. For verification during the upload, the size, size, and format of the image are different from those of the image. Solve the problem by yourself. If I do, it will also

The previous series of blogs can be said to be the essence of our series of blogs, so the blog we wrote today is the essence of our essence, because I started to analyze the permission design, how can we design a good permission and why we need to

Through the previous blog, we wrote the DbSession code. DbSession is equivalent to the database access layer. As long as we want to operate the database, we can access the database from here, in addition, we can get all the objects of entities. I

  The customer has been asking for this for a long time and has only recently completed it. However, Baidu does not have much detailed code. Google may be able to see it in Hong Kong, so this article is original and reprinted. You can understand

/// /// Set the page not to be cached/// Private void SetPageNoCache (){Response. Buffer = true;Response. ExpiresAbsolute = System. DateTime. Now. AddSeconds (-1 );Response. Expires = 0;Response. CacheControl = "no-cache ";Response. AppendHeader

In WPF, the right-click menu is also a class. The ContextMenu class is an object used for context menu. Any control can perform operations on the ContextMenu attribute to set the context menu function. The following code adds a shortcut menu to a

Public static void sendEmail (string toAddress, string emailbody){Var fromAddress = ConfigurationManager. receivettings ["EmailAddress"];String fromPassword = ConfigurationManager. receivetask[ "EmailPassword"]. ToString ();Const string subject =

Use Command, DataReader, and DataSet to bind data. Method 1: use Command and DataReader SqlConnection con = new SqlConnection("server=.;database=Department;uid=sa;pwd=123456"); con.Open(); string sqlStr = "select * from emp";

1. Rewrite the AuthorizeAttribute class and use its own permission control logic to override the AuthorizeCore method.   Public class MyAuthorizeAttribute: AuthorizeAttribute {protected override bool AuthorizeCore (HttpContextBase httpContext)