C#

/// /// Factorial and Accumulation/// Func the first one is the delegate method parameter type, and the last one is the delegate return type./// Public class Factorial{/// /// Delegate the factorial method call/// Public static Func functirial =

Add reference first Right-click a project -- add reference -- COM -- Microsoft Excel 12.0 Object Library Here, 12.0 is a 2007 database, that is, the excel document in xlsx format can be operated. [Csharp]Using MSExcel = Microsoft. Office. Interop.

First, let's talk about the scenario. Why do I use Aop in C #, and where do I use Aop? I just want to intercept the Set Method of the object class, and then call other methods before the Set to assign the value to another object. What I do is to

Reflection (Reflection) is. NET, which can be obtained at runtime through reflection. NET, including methods, attributes, events, and constructor. You can also obtain the name, qualifier, and parameters of each member. With reflection, you can be

In the process of using C #, it is inevitable that multiple threads will be used. After using multiple threads, how threads interact with the interface is a headache. In fact, it is not just the interface. In general, we often need to obtain some

The function parameter or return value cannot be lower than the function access level.Sealed class T {...} // The default access level of the class is internal.Public sealed class Bad{Public void Parameter (T t) // error. The function access level

Class is the basis of object-oriented language. Three main features of the class: encapsulation, inheritance, and polymorphism. The most basic feature is encapsulation.Programmers use programs to describe the world and regard everything in the world

I wrote a simple calculator to implement addition, subtraction, multiplication, division, and didn't associate the function with the button at the beginning. After debugging for half a day [Csharp]Namespace math{/// /// Interaction logic of

Before C # introduces generics, if a class or method wants to support multiple types, it has to define the corresponding parameter or return value as the object type, this means that the Code requires a lot of transformation in the execution process.

Previous: http://www.bkjia.com/kf/201203/122299.htmlWhy? What are the advantages of other implementation methods?Many of my friends asked these questions, so I will explain these two questions first. The background processing of Ajax requests is

. Net has integrated functions into the POP3 mail system. However, if it is an Exchange server-based mail system, it is relatively complicated. If it's just sending, you can simply call CDO for implementation (see my previous article

Using System; Using System. Threading;   Namespace ConsoleApplication1 { Class Program { Public static ManualResetEvent mre = new ManualResetEvent (false );   Staticvoid Main (string [] args) { Thread newThread = new Thread (new

Continue with the previous article. The complete source code of this article is also in the previous article.Enumeration array and common enumeration performance differencesSome people may know that. net has special optimization on arrays when

On a map of n × m, 0 indicates a wall, 1 indicates a blank space, 2 indicates a person 3 indicates a destination, and 4 indicates a bomb reboot. The time required for a bomb is 6. The time required for a person to take a step is the shortest time

C/S structure communication: Client: 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;Using System. Net;Using

My company uses U8. Because BOM is not used for various reasons, the purchasing department has to manually enter the purchase orders. These purchase orders are in the Excel electronic format. How can I import these Excel files to U8 automatically?

Example of rewriting Wndproc: Static bool flag = false;Protected override void WndProc (ref Message m){Switch (m. Msg ){Case 0x0200: // WM_MOUSEMOVEIf (flag){PostMessage (this. Handle, 0x00A1, new IntPtr (2), m. LParam); // import user32.dll}Break;

Using System;Using System. Collections. Generic;Using System. ComponentModel;Using System. Data;Using System. Drawing;Using System. Text;Using System. Windows. Forms; Namespace TestMouseMove{Public partial class Form4: Form{Public Form4

Method overloading makes the same function applicable to various types of data. It declares more than two methods with the same name, to achieve the same handling method for different data types, reload requirements 1. Reload method names must be

CMD commands such as ipconfig/all are well known, but many shoes may not know how to write such a console program with parameters. In fact, it is very simple. Let's first look at the default code for creating a project: using System; using System.