C#

First, the following comboBox1, ComboBox2, ComboBox3, the original three are empty,Passing provinces in the database to ComboBox1Second, in the Load method,1. Query the values to be displayed in the ComboBox with the SQL command2. Give the value to

C # ref, out, params, and value type parameter modifier, 1. Value Type: 1 static void Main (string [] args) 2 {3 int a = 5; 4 int B = 3; 5 NumVal (a, B); 6 Console. writeLine ("a = {0}, B = {1}", a, B); // The output result is: a = 5, B = 3 7 8

Emit Learning (1), emit Learning Dapper (Emit used), CYQ. after Data (another way of thinking, without using Emit) framework, I also want to create a small framework for myself to play with it. However, at this time, the ability is too short to do

WPF custom RoutedEvent Event code segment, wpfroutedevent Today, when I was writing something, I found that RoutedEvent was not found in common code segments. Therefore, I wrote a code segment to facilitate future use. By the way, I recorded how to

C # delete all files in a folder, Public static void DelectDir (string srcPath){Try {DirectoryInfo dir = new DirectoryInfo (srcPath); FileSystemInfo [] fileinfo = dir. getFileSystemInfos (); // return all files and subdirectories in the directory.

C #32-bit programs run in 64-bit systems to solve the redirection problem,   In a 64-bit Windows operating system, a 64-bit Windows operating system adopts a redirection mechanism to ensure compatibility with 32-bit programs. The objective is to

Apple's LZF algorithm parsing and AppleLZF algorithm Parsing There are few parsing documents about the LZF algorithm, but Apple's open-source LZF allows us to simply parse the algorithm. LZFSE is based on Lempel-Ziv and uses finite state entropy

Read the database information to build the remarks of the View Field to facilitate program code generation and view program code In many cases, we need a quick code generation tool to improve the development efficiency, many of the information in

The var keyword in C, Var is a new definition variable of 3.5. In fact, it is also a weakening type definition. VAR can replace any type. The compiler will judge what type you want to use based on context. when using VAR, I think that you cannot

C # Three-tier architecture,3-layer architecture in C # ----December   Presentation Layer Business logic layer (BLL) Data access layer (DAL) Association:Produce dependency Description:The layer-3 architecture adds an intermediate layer between

C # basic exercises,   1. Bubble Sorting namespace _0{ class Program { public static int[] BubbleSort(int[] arr) { for (int i = 0; i arr[j + 1]) { int temp = arr[j];

The individual sorting method in C,  C # the sorting of some algorithms in learning is incomplete. @ ^ _ ^ @ -------- 2016-10-23   **************************************** **************************************** *******************1. Bubble Sorting

Summary of web api knowledge and webapi knowledge in the project Recently, I am working on a project in the company. I am responsible for setting up and developing the webapi framework. I am very busy recently and have no time to summarize the

Serialization | Iot framework ServerSuperIO tutorial-3. Device Driver introduction, Iot framework 1. C # Introduction to cross-platform Iot communication framework ServerSuperIO (SSIO) Serialization | Iot framework ServerSuperIO tutorial 1.4

Testing Programs for process concurrency and testing of process concurrency Here is a small example of interesting process concurrency: Static void Main (string [] args) {new Thread (WriteX ). start (); new Thread (WriteY ). start (); WriteZ ();

C # array declaration, C # How to declare a one-dimensional array Int [] myArray; String [] myStrArr; However, Initialization is required before accessing the array. C # two methods are available for Array initialization. The first method is to

C # intermediate-Automatic startup program, I. Preface For the method of C # automatically starting a program after it is started up, the following statements appear on the Internet: Modify the registry: 1. HKEY_LOCAL_MACHINE \ Software \ Microsoft \

Selenium calls Chrome, Firefox, IE, seleniumchrome In the C # environment, you can use Selenium to call different browsers as follows: 1 IWebDriver driver = null; 2 string Browser =null; 3 if (Browser.Equals("IE")) 4 { 5 　　InternetExplorerOptions

[Unity3D practice] Swing helicopter development practice (2) and unity3d practice [Unity3D practice] Swing helicopter development practice (2)     Let me show you the second practice of swing helicopter development today   1. drag the title_00

Standard delegate and Event _ 1, framework_1 in. Net Framework The standard delegate in. Net Framework has been defined in the namespace System, namespace System{ public delegate void EventHandler(object sender, EventArgs e);} All events in the.