C#

A LAMBDA expression is an anonymous function that can contain expressions and statements, and can be used to create a delegate or an expression tree type. All lambda expressions use the lambda operator =>, and the operator reads "goes to". The left

The resolution type is followed by question marks and double question marks. The resolution type is followed by question marks. In the variable definition, the type is followed by a question mark, indicating that the data type is NullAble. When you

Use Stack to perform operations on the integer value's arithmetic expression string C #, Here, if you perform an operation on the expression "(6 + (7 + 8)-9) * 9 + 8/2)-3)/2. Those who have been familiar with this class know that this expression has

C #~ Asynchronous programming continues ~ W3wp.exe crash triggered by awaitand async- problem-friendly solution,Reasons for deadlocks The reason for understanding the damn lock is to understand how await processes contexts. By default, when an

C # getting started with Reading Notes (v6) (Part 4 Data Access)Chapter 4 File System Data StreamSerial device serialization deviceCompressionTruncate TruncationCSV (Comma-Separated Values, Comma-Separated Values)Obsolete outdated File Path: String

The ininvoke and BeginInvoke traps are used to delegate asynchronous calls. This trap comes from a requirement that the data needs to be processed asynchronously in the background. After processing, the event that is triggered to be processed is

The seven principles of the Lee replacement principle, the Lee replacement of the seven 1. Single Responsibility Principle That is, every class only focuses on one thing. 2. Lee's replacement principle Sub-classes can replace the position where

. NET open-source high-performance Socket communication middleware Helios introduction and demonstration, middleware heliosI. What is Helios? Helios is a high-performance Socket communication middleware written in C. The development of Helios is

. Net erp (Office OA) Development Platform Architecture Overview-Form Designer, erpoa Background: Build a development platform suitable for the company's erp business.   Architecture Overview:   Example of form design, development, and deployment  

Bitwise inverse (~) Unlike (&) or (^) or (|) shift right (>) shift left ( We first know the characteristics of these two binary data:1 = 0000 0000 0000 0000 0000 0000 0000 0001 -1 = 1000 0000 0000 0000 0000 0000 0000 0001 1. The highest bit (first)

Checkbox‑checkedchanged (object sender, EventArgs e) is different from checkbox‑checkstatechanged (object sender, EventArgs e ). 1 using System; 2 using System. data; 3 using System. drawing; 4 using System. text; 5 using System. windows. forms; 6

The file "bin \ Debug \ WindowsFormsApplication2.exe" is being used by another process. Therefore, this process cannot access this file ., Bindebug Http://zhidao.baidu.com/question/221394579.html? California % 22% B8 % B4 % D6 % C6 % B5 % BD % 22bin

C # basic consolidation (3)-How To read XML from Linq To XML, Record some methods for reading XML, so that you do not forget it when using it. You have to spend time searching it.I. Reading XML in traditional writing Now I have an XML file as

7. Builder, prototype, and Singleton of the Creation Mode ----- big talk design mode and the prototype of the two figures of the westward journey I. Builder ModeSeparates the construction of a complex object from its representation, so that

C # Coding specifications (reproduced ), Original article: http://www.cnblogs.com/wulinfeng/archive/2012/08/31/2664720.html   1Purpose ............................................................... 3 2Applicability ...............................

C # The Code enables the Transaction lock Transaction to perform a series of commit rollback operations,I. Preface Because many people generally perform a series of related database operations in the stored procedure, and the writing of locks in the

Generate Chinese characters randomly (extract saved code) and extract Chinese Characters /// /// Generate Chinese characters randomly/// /// length (4 digits) /// Public string CreateCode (int strlength){// Define a string array to store the

Register DLL Assembly Gacutil.exe (Global Assembly Cache tool), Global Assembly Cache gac The Global Assembly Cache tool allows you to view and manipulate the Global Assembly Cache and download the cached content. This tool is automatically

C # mutual conversion of Enum, Int, and String, Enum provides a base class for enumeration. The base type can be any integer except Char. If the basic type is not explicitly declared, Int32 is used. Programming Languages generally provide syntax to

Source code, anti-code, complement code, personal understanding, anti-Code complement Original code: Binary Fixed-point notation, that is, the highest bit is the symbol bit, "0" indicates a positive number, "1" indicates a negative number, and the