C#

[Csharp] most programmers use the bubble algorithm when writing sorting algorithms. Why? This algorithm is the simplest, easier to understand, and easier to write. However, the bubble algorithm is not efficient. Today, we will write a c # Quick

[Csharp] /// /// Add a row number to the DataGridView /// /// DataGridView Control ID public static void AddRowIndex (this DataGridView dgv) {dgv. rowPostPaint + = delegate (object sender, DataGridViewRowPostPaintEventArgs e) {SolidBrush B = new

The basic data type of. C # is fixed and does not change. It is different from C ++. Integer types are usually faster than smaller types, because the CPU has been optimized for integer types and memory alignment exists .. C # to convert A char to an

Async and await are introduced in C #5.0. These two keywords allow you to write asynchronous code in synchronous mode more conveniently. That is to say, more convenient asynchronous programming. The general format is as follows: var result = await

A structure is a data type defined by a programmer and is very similar to a class. Has data members and function members. But there are also differences: 1) the class is the reference type, while the structure is the value type; 2) the structure is

To use the design pattern, you must first understand the object, inheritance, and interface. Generally, we use the new method when creating the object, which is related to how the program creates the object. Further thinking, we often need to create

Suppose there are server programs, ChatServer and client programs ChatClient. the client can send messages to the server. step 1. start listen on the server, 2. then the client connect.3. the client sends the message as long as the server starts

[Csharp] [Csharp]Namespace _ 3. _ 12 forced type conversion{/// /// It is always safe to forcibly convert the instance of the derived class to the base class type. You can even convert a derived class instance to an abstract base class type. After

This document cannot be reproduced or referenced without the permission of the author. to reference this document, contact the author by email. Contact the email address xuanzhaopeng # gmail.com.   During the development of windows desktop

Some of the knowledge points used in this recent program are hereby recorded for future use! 1. Method for Testing the code execution time [csharp] Stopwatch sw = new Stopwatch (); sw. start (); // enter the code sw to be executed here. stop ();

Apps are often used in projects. some of the config files are automatically generated, such as those generated when the webservice or wcf Service is referenced, and some manually created configuration files are directly named app by default. config.

Since the c # Video is used to aid the learning of the design model, the content of this part is also the same as that of VB. although it was difficult at the beginning. after accessing some examples and experiments. it becomes much smoother to

Directly provide the source code, runtime environment: Office2010, Project2010 (if needed), Visio2010 (if needed ),. net framework2.0 [csharp] using System; using Microsoft. office. core; namespace Office {class Util {private Util () {} // //

Observer mode (Observer): defines a one-to-many dependency, allowing multiple Observer objects to listen to a topic object at the same time. When the status of this topic object changes, it notifies all observer objects so that they can

Start an external program: [html] using System; using System. collections. generic; using System. linq; using System. text;/* create a process and input the required parameters * or start an external program for the process, and pass in the

[Csharp] "> -- %> [csharp] & TripSelectedIndex = "> Code: [csharp] protected void gdvOrderList_RowCommand (object sender, GridViewCommandEventArgs e) {switch (e. commandName. toLower () {case "view": var serviceId = long.

Create HttpCookie cookie = new HttpCookie ("name ");Cookie. Value = HttpUtility. UrlDecode ("", Encoding. GetEncoding ("UTF-8"); // HttpUtility This is used for Encoding and decodingCookie. Expires = DateTime. Now. AddDays (1); // set the expiration

I. Overview In software development, we sometimes encounter many objects interacting with each other. There is a complex reference relationship between objects. It is very difficult to modify the system when the requirement is changed. To decouple

From the Internet, we can see that the data inserted by excel is very slow. Someone writes data to excel through a stream, which is very fast. The detailed principle is as follows: 1. StreamWriter sw = new StreamWriter (path, false, Encoding.

Due to project requirements, the project needs to be compressed in C #, then decompressed in java, or reversed, compressed in Java, decompressed in C #. The following code has been tested and verified. Key Technical Points and experiences: The