C#

Recently, because the company's file management system needs to support long file names, that is, the limit of 260 characters, the company found relevant information online and found a dll written by a foreign cool man, based on the original author,

1. Use C # To obtain the OS Version Number (1) Principles The OSVersion attribute of the Environment class is an OperatingSystem object. The OperatingSystem class indicates information about the operating system, such as the version and platform

The ReaderWriterLockSlim class is used to manage the lock status of resource access, and supports multi-threaded reading or exclusive write access. ReaderWriterLockSlim is used to protect resources read by multiple threads but written by only one

C # provides a wide range of extension methods for objects inherited from IEnumerable (List is the most well known), involving all aspects of List operations. The Extension Method ThenBy is an interesting one, and its implementation is also clever.

When writing delegation-related code, especially generic delegation-related code, you may encounter the following problem: Define a delegation type: [csharp] public delegate void TestDelegate (T arg); defines a test class and Method: [csharp]

-- [State Pattern is a design Pattern and a behavior Pattern. Applicable scenarios: 1. The behavior of an object depends on its status, and it must change its behavior according to its status at runtime. 2. An operation contains a large multi-branch

1. The difference between a structure and a class lies in the storage and access methods. A structure is a value data type, and a class is a one-to-one reference data type. The so-called value data type storage exists in the heap, and the reference

The prototype of StretchableImage is as follows: Public virtual UIImage StretchableImage (int leftCapWidth, int topCapHeight) {UIImage result; using (new NSAID utoreleasepool () {if (this. isDirectBinding) {result = (UIImage) Runtime. getNSObject

-- [Responsibility chain mode: Enables multiple objects to process requests to avoid coupling between request senders and receivers. Connect the object to a chain and pass the request along the chain until an object processes it. Application: 1.

Take the following example: Form1, Form2, Form3 ...... Inherited from Form, you can use Form f = new Form1 (); and so on to create an instance of the Form subclass. If there are too many subclasses, you can create an instance by passing a parameter,

Sereja has an array a, consisting of n integers a1, a2 ,..., an. the boy cannot sit and do nothing, he decided to study an array. sereja took a piece of paper and wrote out m integers l1, comment l2, comment ,..., lm (1 Gbit/s ≤ 1_li Gbit/s ≤ 1_n ).

1. Read the operating System and CLR versions OperatingSystem OS = System. environment. OSVersion; Console. writeLine ("Platform: {0}", OS. platform); Console. writeLine ("ServicePack: {0}", OS. servicePack); Console. writeLine ("Version: {0}", OS.

The parameter given in the command line is the command line parameter. Command line parameters are separated by spaces. However, if the command line parameter itself contains spaces, the parameter must be enclosed in a pair of double quotation marks.

TimeSpan usage TimeSpan is used to represent an instance of a time period. The difference between two time periods can constitute a TimeSpan instance. Here are some important usage: A first introduces several methods TimeSpan. Minutes (other time,

Using System; using System. collections. generic; using System. IO; using System. linq; using System. runtime. interopServices; using System. text; using System. threading. tasks; using System. windows; using System. windows. controls; using System.

I recently encountered a strange problem when I used C # For image editing. Because you need to modify and Save the local Image on your computer, the simplest method is to load the Image to PictureBox. After editing, you can call the Save method of

Today I have summarized the C # Generic program design, and I think the so-called generic Program Design in C # Corresponds to the template in C ++, The functions and mechanisms of generic design are very similar. In C ++, there are "function

Hello, everyone. I'm SUNWEN. Now it's on March 13, May 4, and the lights will be turned off in another 15 minutes. So hurry up and start first and continue tomorrow. Now I want to talk about User-Defined Conversions in C #. The previous struct

3. Create a C # class library (Dll)Creating a dll file in VC ++ in the past cannot be simple, but in Visual C #, this is also a breeze. The introduction below is divided into two parts: 1. Create DLL; 2. Test dll on the client.(1) create a DLLFirst,

1. 3 type C # supports two basic types: value types and reference types ). Values include char, int, float, enum, and struct ). References include classes, interfaces, delegate, and array arrays ). The difference between a value and a reference is