C#

Citation: System.Xml;XmlDocument doc =NewXmlDocument (); XmlElement Root= Doc. CreateElement ("Root");//Main contentDoc. AppendChild (Root); XmlElement Child1= Doc. CreateElement ("attr1"); XmlAttribute attr1= Doc. CreateAttribute ("attr1"); attr1.

Implementing a Mail Receiver _ Mail server with Visual C #In this paper, by usingC #To implement a mail receiving program based on the POP3 protocol to show you the Power of C # Network programming, and to introduce the principle of e-mail reception

OverviewRegular expressions, which are mainly used to describe a particular type of text (pattern). The regular expression engine is responsible for finding this particular text in the given string.This article is mainly to list the regular

Using system;using system.collections.generic;using system.linq;using system.text;namespace ExLambda{    Class program    {        delegate double mydel (int par);        Static void Main (string[] args)         {            Mydel del = delegate

C #-interface PK abstract class One of the characteristics of object-oriented is abstraction. abstract classes and interfaces have to be mentioned. What are the relationships and differences between abstract classes and interfaces? Let's discuss it.

C # three features of object-oriented, I,Encapsulation:We can take everything in the world as an object, so here we take people as an example, a person must be an object.So what is encapsulation?Encapsulation means that this person has to do one

[C #] 6.0 new features, C #6.0 has been released for a long time. Although new features and syntaxes tend to be stable, for most programmers, to use C #6.0 in your work, you have to wait for a short period of time.So it may not be too late to talk

Image Upload background implementation, Image Upload background implementation Var request = this. Context. Request; HttpPostedFile files = request. Files ["idFile"]; String newname = null; If (files. ContentLength> 0 ){Try{String url;String

Usage of the KindeEditor Image Upload plug-in Image uploading is sometimes a headache for some new users. Today, I will share the KindeEditor plug-in used in the project. It takes minutes to upload images and files, the configuration is simple. Now

Some operations on C # DataTable, Frequent operations on DATATABLE can achieve the same effect for some operations that do not need to be repeated through SQL. Method 1: It is also widely known: YourDataTable. Columns. Remove ("column name

C # Read and Write. ini filesC # to read and write the. ini file in the code, you need to import the GetPrivateProfileString and WritePrivateProfileString functions in kernel32.dll.     First, introduce kernel32.dll.  Kernel32.dll is an important 32-

Csharp: Importing or Exporting Data from Worksheets using aspose cell, csharpimporting /// /// tu juwen /// 20150728 // EXCEL win7 32-bit, 64-bit OK // public class ExcelHelperImport {/* http://www.cnblogs.com/wangrsh2010/archive/2012/03/21/2410182

The playing principle of the KTV karaoke System and the working principle of the ktv karaoke SystemPlaying principle of the karaoke song system of Beida qingniao Instructor-former Yuming   1. First, we know there are two classes (PlayList

C # a more elegant way to replace switch statements,   Today, I encountered a condition for using the switch statement in the project, but the problem is that there are many conditions. There are about dozens of conditions, and case Judgments are

C # Call WebService instances and development1. Basic Concept Web Service is also called XML Web Service WebService. It is a lightweight and independent communication technology that can receive requests from other systems on the Internet or

Unity Container application example: unitycontainer1. Reference Unity Right-click the project reference and choose manage Nuget package> search for unity> install Unity and Unity Interception Extension, as shown in. 2. Create a basic class Take the

C #: Md5 and Sha1 encryption methods, 1. Create a console application   2. Create an EncryptHelper. cs class. 1 public static class EncryptHelper 2 {3 /// 4 /// Md5-based custom encryption string method: enter a string, returns a hex Hash hash

C # implement the calculation of any large number and proof of a simple logical proposition -- Preface,Introduction This is my graduation project. I have always wanted to write it into my documents, but four years have passed without caution (this

SQL Injection parameterization solution and SQL Solution StringBuilder strSql = new StringBuilder (); strSql. append ("insert into T_SysLog ("); strSql. append ("UserID, UserName, LogContent, CreateTime"); strSql. append (") values ("); strSql.

I have just come into contact with LINQ. Popular Science: Language INtegrated Query (LINQ) Is a Microsoft technology. It adds a natural query SQL syntax to the. NET Framework programming language and supports Visual Basic. NET and C.   LINQ defines