C#

Previous practice: Before c#3.x out, I believe you have been accustomed to defining and implementing a public property through a private field + public-property hairstyle. is implemented as follows. 1class person 2　　{ 3　　　　private int age;

20.2.1 introduces anonymous variables In many cases, we need an object that can temporarily store a batch of data with certain associations, or, in some cases, we are more interested in the "shape" of only one object, such as the name and type of

It is more convenient to define attributes in c#3.0 no longer in the same way as the previous version of the cumbersome, you need to define the fields to store data, and then define the property, now only need to define the property can be, the

The key points are as follows: 1. Use of OpenFileDialog controlsWhat if you chose a local file by clicking the Select button?In particular, it is divided into the following steps: A, create a new WinForm form and draw the appropriate controls. B,

A.winform in the form display There are 2 ways to display the form: Form.ShowDialog method (The form is displayed as a modal form) Form.show method (The form is displayed as a modeless form) The two specific differences are as follows: 1. After

in. NET, because a different node corresponds to a class to handle it. NET inside for convenience, has built up some classes for us to use, so that when we read the configuration file, we do not have to define the class to handle their own defined

This article was originally written on April 1, but then how to publish it, found that it was used in the article: //* study * on * Net *** These four characters are estimated to be hit sensitive words out. It's good to know everyone. One,

This question is last week to go to the ocean company interview of a pen question, interview when the interviewer also asked, although prepared beforehand also answer on, but fundamentally say oneself still not quite understand. Just this two days

when doing the evaluation system of the university cloud Platform system, the student has clicked the hyperlink to realize the function of jumping and passing the value to the specified interface. Hyperlinks are not complicated to implement, but

ASPX The aspx file is Microsoft'sServer-side operation of theDynamic Web pagesfiles, which can be obtained after execution by IIS parsingDynamic Pages, Microsoft is launching a newNetwork Programmingmethod, rather than an ASP's simple upgrade,

Background: Determine if a variable is a format in ". Txt.doc.xls.ppt.pdf", and if so, perform the appropriate action. Method One: Use generics ReadOnly ilist fnames = new list () { ". doc", ". txt", " . xls", ".

After writing the ASP. Net file upload, I feel this kind of upload still has a lot of flaws, so ... (Omit 10,000 words, no nonsense). I didn't use the traditional ASP. NET, and I chose the Open source ASP. The reason for this is simple, the new

The ASP. NET Core Data Protection not only provides asymmetric encryption capabilities, but also provides flexible key storage and a consistent encryption and decryption interface (protect and unprotect). It was used in the session, it was used in

This article describes The UdpClient class provides an easy way to send and receive non-connected UDP packets in synchronous blocking mode. Because UDP is a non-connected transport protocol, you do not need to establish any remote host connections

This article describes The TcpListener class provides some simple methods for listening and accepting incoming connection requests in blocking synchronous mode. You can use the TcpClient or Socket to connect the TcpListener. You can use IPEndPoint,

C # Remove HTML tags, Public static string ReplaceHtmlTag (string html, int length = 0) {string strText = System. text. regularExpressions. regex. replace (html, "] +>", ""); strText = System. text. regularExpressions. regex. replace (strText, "& [^

Csharp: using OleDb Getting the identity of the most recently added record, csharpadded /// /// execute the SQL statement, returned Number of affected records /// /// Number of affected records /// /returns> public static int ExecuteSql (string

Lambda expression query experience: Use of IN and groupby, lambdagroupby Lambda In usage: Lambda expression query does not use the IN method. You can modify whether the in query array is included IN the set of the ing object: The following

(Value Type reference type) Relationship with null, reference null1. nullNull indicates that the variable does not point to any object. 2. Value TypeIncluding bool, struct, enumeration, int, double, float, and so on. The value types in. NET are

C # extract images from Gif images, C # extract image code snippets from Gif Private void btn_extract_Click (object sender, EventArgs e) {Image imgGif = Image. fromFile (@ "test.gif", true); // Create a new FrameDimension object from this image