C#

Three advanced sorting1. Heap sortingHeap sorting is suitable for scenarios with a large amount of data (Millions of data ).Heap sorting does not require a large number of recursive or multi-dimensional temporary arrays.This is suitable for a

. Net Component Programming thread and concurrency Management (2) 2. Synchronization thread Manual synchronization Monitor Mutual Exclusion Event waiting   Synchronization thread All. the. NET component supports running in a

. Net Component Programming thread and concurrency Management (1) 1. Thread Thread Thread Creation Thread Blocking Thread Suspension Thread sleep Add thread Thread abort Currently, almost all applications are multi-threaded.

 DoNet Resources As we all know ,.. Net memory management is divided into Managed resources and unmanaged resources. The objects in the memory are divided according to these two types of resources, and then the GC is responsible for recycling

I recently worked very leisurely. When I was free, I went out to play with my sister. I watched novels, watched movies, and had a good time. I regret it this week. The code is my favorite, write an email sending program when you do something small.

When I first started learning C #, I heard that CLR has a special memory management mechanism for the String class: Sometimes, two String class objects are explicitly declared, however, they point to the same instance. As follows: String s1 = "Hello

There are two ways to access data or call Methods: one is to access or call data by name, and the other is to access the call through the memory address. To ensure system security and stability, the NET Framework CLR library does not allow programs

Because the project needs to use Linq to query data, but when performing multi-condition queries, you need to use a lot of if (...! = String. empty. The following two methods are found on the Internet: one is a class written by a foreigner, which is

During programming, we sometimes use multiple threads to solve the problem. For example, your program needs to process a lot of data in the background, but also make the user interface operational; or your program needs to access some external

We all know that the UI thread data cannot be directly accessed or modified by other threads when multiple threads access the UI control in WPF. How can this problem be solved? There are two scenarios: 1. WinForm Program1 2 1) first method, use

I plan to write several articles specifically to introduce HashTable, Dictionary, HashSet, SortedList, List and other collection objects, and analyze the principles from the inside so that they can be selected and used in practical applications.

If you want to write an app that can access the database and query and modify the database, you suddenly find that the knowledge is limited. Therefore, you can select C # To implement this app. Use a simple three-tier architecture as the app

Lottery program: You just need to click a button and rotate an image for a while to get a result. But this is not the requirement of this program. You need to randomly select users from the database, based on the specified level and number of people

In C #, = and! = By default, the reference address is compared. If you want to change it to compare its connotation, You need to reload it. Generally, two operators and two functions need to be reloaded: The Equals function, the GetHashCode function,

Protected void Page_Load (object sender, EventArgs e) {if (! IsPostBack) {Bind_ TV (TreeView1.Nodes) ;}# add parent node to region // Add parent node // private void Bind_ TV (TreeNodeCollection tree) {// first add Level 1 parent node uint id =

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 probably written as follows: EmployeeCollection data = += action = (d) =>,

  Preface  Two methods for obtaining information about a method   Reflection is a C # function that allows users to obtain class information. The Type object maps to the underlying object; In. Net, once the Type object is obtained, you can use the

For a collection class that implements Foreach traversal, you must implement the IEnumerable interface. For a generic set, you must implement the IEnumerable interface. ListForeach : IEnumerable T:, index = ListForeach (= (index >== T [array.

Class Program {private delegate int MyDel (int a); public static int MyMenthod (int a) {for (int I = 0; I 　 Class Program {private delegate int MyDel (int a); public static int MyMenthod (int a) {for (int I = 0; I 　 Class Program {private

 1. wage calculation formula Every enterprise will certainly use wage calculation. Wage Payment is a very sacred task, and wage calculation is a very important task. Excel has a very powerful formula function, which helps many financial personnel