C#

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace TDelegate{ public delegate void MyHandler1(object sender, MyEventArgs e); public delegate void MyHandler2(object sender, MyEventArgs e); public

We are familiar with the concept of multithreading. For winform developers. A lot of resources are used. however, Timer or backgroundWorker is used. have you ever thought about writing a base class and then .... it can be used immediately when

1. using is used to operate databases. using is an abbreviation of resource release. It is used to implement the IDisposable interface (the interface for releasing object Resources is IDisposable) private void button2_Click (object sender,

When writing game code, you often need to write more debugging code during the development process. The Code should be commented out or deleted during the game preparation period, the Residual code will also negatively affect the efficiency of game

# Region converts a date to the specified format // // converts the date to the yyyy-mm-dd format. /// /// date /// returns the String object public string Date_Format (string NDate) {string sm, sd; int y, m, d; try {y = Convert. toDateTime

Generate a Color table for all static predefined members of the Color class. Const long CELLS_PER_LINE = 10; const float MARGIN = 12; const float CELL_WIDTH = 160; const float CELL_HEIGHT = 64; const float COLOR_LEFT_MARGIN = 8; const float

Multi-thread delegation is often used in the C # development process. Today, when I test the software I wrote earlier, I found a problem and reported that before creating a window handle, you cannot call Invoke or BeginInvoke on the control. This

MVC4 already comes with jquery, a newly created Project. Basically, it can run without adding anything and run the project. (It integrates so many things, jquery, modernizr, built-in default permissions, and generated templates. However, there is no

1. obtain the local string processName; // process name to int processID; // ID int threadNumber; // number of processes TimeSpan cpuTime; // CPU time long processMemory; // Number of memories 2. the framework structure to be implemented (add three

Excel18-bit numeric type conversion C # type 1. problem description when reading Excel, numbers such as ID card mobile phone numbers or other numeric types will be converted to 1.000E + 17 in normal Excel mode or other similar numbers. When C #

-- [Convert an interface of a class to another interface that the customer wants. The Adapter mode allows the classes that cannot work together due to incompatibility of interfaces to work together. -- Gang of Four Application: for example, when a

An object of a class is called an instance. Some variables must be instantiated by adding New when being defined, and some variables do not need New when being defined. For example, Dim EnCard asnew CardInfoEntity and Dim dt as Datatable. Why? In

Use the following methods to avoid the trouble of assigning values one by one when updating objects. Code: public static class ReflectionExtensions { public static void CopyPropertiesFrom(this object destObject, object sourceObject)

Using System; using System. collections. generic; using System. text; using System. diagnostics; using System. threading; namespace Pi {class Program {static void Main (string [] args) {double pi_wy, sum_wy = 0.0, seri_t_wy, para_t_wy; Stopwatch

From msdn, we know that the time complexity of the Clear method of Array is O (n ). Today, let's test whether this method is fast or self-compiled: Is Clear () fast, or directly new an object is fast. Program viewing private void Experiment()

Sometimes when we want to reuse a Dictionary, we can Clear () or directly create a new object, Which of the two is cost-effective? Let's look at the program: private void Experiment() { System.Diagnostics.Stopwatch stopwatch =

As a server, database operations are inevitable. How does C # perform operations? This program uses various methods in the MySQLDriverCS namespace. This is relatively simple, so the premise is that you need to install this stuff. After the

Call another window or dialog box in one window. Now you haveTwoWindow: The main window Form1 is used to call another window/dialog box through its menu items or buttons. Dialog Box Union1, used for space overlay analysis window. The purpose is

This is my source code. Could you tell me why the cookie value is often lost? HttpCookie cookieUrl = new HttpCookie ("User ");CookieUrl. HttpOnly = true;CookieUrl. Expires = DateTime. Now. AddDays (1 );CookieUrl. Values ["BackUrl"] =

To test whether the code we wrote has the ftp upload/download function, we need to download a virtual FTP server, such as Serv-U. After configuring Serv-U, we can test the encoding.Introduce namespace: using System. Net; ////// Download the object /