C#

usingSystem;usingSystem.Collections.Generic;usingSystem.ComponentModel;usingSystem.Data;usingSystem.Text;usingSystem.Windows.Forms;usingSystem.Security.Cryptography;//加密部分usingSystem.IO; namespaceWindowsFormsApplication1{    publicpartialclassForm1 :

The idea of making an irregular form or control is generally a way to create a region and then set it to the specified window or control. There are many ways to generate region, the most common is to create from a picture, the picture of the

Chart1.datasource =DtBstring[] Strcolor =Newstring[20]; strcolor[0] ="220, 224, 64, 10"; strcolor[1] ="220, 252, 180, 65"; strcolor[2] ="220, 159, 100, 100"; strcolor[3] ="220, 5, 100, 146"; strcolor[4] ="91,42,0"; strcolor[5] ="19,211,188";

C # contains six types of authentication methods, namely:One, non-null verification requiredfieldvalidator.Second, comparative verification CompareValidator.Third, scope verification RangeValidator.Four, the regular expression validation

The size of the current screen in addition to the Work field outside the taskbar This. Width =System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Width; This. Height =System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Height; The current

. NET in-depth practical series -- how does EF write filter conditions?,. net -- ef Unique access address for this article: http://www.cnblogs.com/yubaolee/p/DynamicLinq.html For system development, filtering by different fields is a common

[Switch] The problem of connection failure after a certain period of time in China's Adam6060, China's adam6060 To cooperate with Party B for testing, the Adam module must be connected to the site. After a while, I found that the module could not

C # Use the json interface, A few days ago, the project was changed from using the database to using the interface. Because some additional information exists in the xml returned by the interface, the converted xml able cannot be stored in MemCache.

C # basic knowledge The keyword used by the interface defined in 1. C # Is: interface2. C # is a pure object-oriented language. Object-oriented languages have the following features: inheritance, encapsulation, and polymorphism.3. Differences

C # Check whether the Sub-thread has been completed regularly C # Check whether the Sub-thread has been completed regularly   Class Program {static void Main (string [] args) {// start a support thread in the Main thread and execute a method such

C # PieChart of chart       Using System. web. UI. dataVisualization. charting; using System. drawing; namespace Chart. AJAX {public partial class Export_AJAX: System. web. UI. page {void CreateChart () {string [] xValues = {0-20, 20-30, 30-40, 40-50

Use IProgress to implement asynchronous programming process notifications, and iprogress Asynchronously   In asynchronous programming, you can use IProgress to display the progress.   IProgress only provides the void Report (T value) method.

Task. FromResult Application Scenario example: task. fromresult   Task. FromResult is used to create a completed Task with a returned value.   Scenario 1: Synchronous implementation of an asynchronous Interface Method   For example, an

C # Excel import and export, This article describes how to import and export C # Excel files.Directory 1. Introduction: Describes the third-party class library NPOI and the Excel structure. 2. Excel import: describes how to use NPOI to import an

Create simple Telnet instance and telnet instance Step 1 first add SuperSocket. Common. dll, SuperSocket. SocketBase. dll, SuperSocket. SocketEngine. dll, log4net. dll, System. Threading. dll. At the same time, you also need to introduce System.

Static variables and variables The ease of using static variables leads to System bugs. Background: Global static variables are defined in the background of the page to save the data displayed on the foreground. Symptom: when multiple users

Trace and trace Click to download sample code String. Format: the signature of the load method is as follows: 1 public static string Format(2 IFormatProvider provider,3 string format,4 params Object[] args5 ) You can use the custom

C # Event Learning diary, The reason for the event keyword is to simplify the construction of custom methods to add and delete methods for the delegated call list. When the compiler processes the event keyword, it automatically provides the

C # Lambda expression learning diary, Lambda expressions only use a simpler way to write anonymous methods, which completely simplifies the use of. NET Delegate types. Now, if we want to use the FindAll () method of the generic List <>, this method

Parallel and PLINQ: parallelplinq Parallel is a simplified Task usage. It contains three static methods: Parallel. For, Parallel. ForEach, and Parallel. Invoke. PLINQ is a parallel version of LINQ. The following are simple examples and precautions