C#

Introduction C # The Network Programming series will briefly describe the basic knowledge of network programming. Due to my limited skill in this area, I can only provide some preliminary introductory knowledge, I hope to provide some help to my

1. array Overview An array is a reference type, which means that the memory of the array is allocated to the managed stack, and we maintain its pointer on the stack rather than the real array. Next, we will analyze the elements of the array. The

Dotnet. frameword provides a special random generation class System. random, a computer cannot generate completely Random numbers. The numbers it generates are called pseudo-Random numbers. They are selected from a group of finite numbers with the

In. Net, the garbage collector is responsible for recycling the reference type objects you have created, but the collection time cannot be accurately estimated, so this is called uncertain destruction. The value type is automatically released, so it

Linear table (List)A linear table is the most basic, simple, and commonly used data structure. The relationship between data elements in a linear table is one-to-one,That is, except the first and last data elements, other data elements are connected

In our programs, there are often some time-consuming operations. To ensure the user experience, we can make the user interface respond in a timely manner. We generally use multi-threaded operations to make time-consuming operationsThe background is

Rotating an image from any angle.   The RotateTransform () method provided by the Graphics class is used to rotate images at any angle. The Code is as follows: Private void button#click (object sender, EventArgs e){// Rotate the image at any

Multimedia is a method that combines multiple media sets with computer technology to establish logical connections and process them. Multimedia mainly includes text, graphics, images, sounds, videos and animations, and is combined with advanced

Representative (delegate ): It is a function pointer in the C # language, which indicates that it can point to a function and call the implementation of this function during running. Let's take a look at its implementation steps: Declare a

XML can transmit and store data between different applications on different platforms. it is an information transmission tool independent of software and hardware. therefore, it has become the W3C recommendation standard. currently, software and

The code for a simple small program is as follows: Using System;Using System. Collections. Generic;Using System. ComponentModel;Using System. Data;Using System. Drawing;Using System. Linq;Using System. Text;Using System. Windows. Forms;Using System.

I have done a lot of Winform sharing software and have some experience and accumulation in interface design. I am going to open a series of articles on "WinForm interface development, this section describes the Winform interface design and the use

I just saw that in the previous article on the internet, SQL is used to transpose rows and columns. SQL server 2005/2008 uses only one commit function to implement complex implementations of SQL server 2000. When it comes to transpose, I immediately

Recently, when I was writing a small program, I encountered the following requirements: If you know a set of web page URLs and want to get the html of each web page, you actually want to use the WebBrowser in the loop statement to load each web page

Use the CommandText method of the SqlCommand class (to construct an update statement for it) and ExecuteNonQuery to modify table data.The main program code is as follows. First, instantiate a SqlCommand object (cmd), and then use the SQL parameter

The Code is as follows: 1 private TextBox Txt;23 protected void Page_Load (object sender, EventArgs e)45 {67 Create ();89}1011 private void Create ()1213 {1415 Button Btn = new Button ();1617 Btn. ID = "MyBtn ";1819 Btn. Text = "show ";2021 Btn.

1. Optional parametersYou can set a default value for the method parameters, as shown in the following code: class Program {static void Main (string [] args) {Show (); Show ("cary"); Console. readLine ();} public static void Show (string msg = "")

During the interview this afternoon, HR asked: What are the differences between static or static methods and non-static methods in C?My answer is that static calls can be called directly instead of static ones that need to be instantiated. HR said

I. C # statement Overview (this part comes from the Network) Statement (statement ):Program activities are expressed by statements. C # supports multiple different statements. Many statements are defined in the form of embedded statements. Block

# Region read Excel Data to the Gridview Public void ReadExcel (string sExcelFile, GridView dgBom){ DataTable ExcelTable;DataSet ds = new DataSet (); // Excel connectionOleDbConnection objConn = new OleDbConnection ("Provider = Microsoft. Jet. OLEDB.