C#

Method One: Because the generated EXE file in the Bin\Debug directory, you can use the way up to find the directory to get the XML file to readString haarxmlpath = @ "... /.. /Haarcascade_frontalface_alt_tree.xml ";FileInfo file = new FileInfo

Reports in company projects are mostly generated using Crystal Reports. In the project, the fill data source of the Crystal Report is the DataSet or DataTable (this is very troublesome and time-consuming, I secretly think .). I am also responsible

There are two forms of data query by using linq: Var demo = from p in pList Where p. id = *** Select p; Var demo = pList. where (p => p. id = ***) select p; The above are two common expressions of linq recently. Linq supports operations with

Outline of snake writing Thanks: ThanksRonnie MooneyAfter learning his video, you can find the video in [C #] Creating a Snake Game-Less than an Hour, please bring your own ladder ). WriteInputStatic class Initialize static

First, declare a Currency structure. The Currency structure has its own ToString () overload method and a static method with the same signature as GetCurrencyUnit. In this way, you can use the same delegate variable to call these methods: struct

I have been using NVelocity for several years, mainly using my code generation tool Database2Sharp to generate relevant Code. However, NVelocity is a very good template engine, it can be used to generate files, pages, and other related processing,

When you open QQ, the pop-up form of QQ news will slowly rise up a small window in the lower right corner of the screen, occupying a small space, which can serve as a prompt. Next let's take a look at how to use system APIs to easily implement this

After the weekend, I spent some time working out my own orm framework and made it open-source. What has been done is usually a bit simple. Some new users may hear the word "Framework" and think it is "advanced". In short, orm encapsulates ado. In

First, define the event in the Class Library: // Define the delegate public delegate void DelWeiTuo (string name); // define the event public event DelWeiTuo EventWeiTuo;   Define the event trigger method: // Define the event trigger method public

Based on the common requirements of CRM Customers and consultants, the boss decided to add the call bullet screen function to the CRM system. The so-called call bullet screen is that when a call is made, the computer displays the customer, contact,

We want to provide users with some data. We think that Excel files are better for readability of users (persons rather than machines. Compared with csv, xml, and other files, Excel supports automatic filtering, window locking, background color,

// Read the private void readBtn_Click (object sender, EventArgs e) {try {if (pathTxt. text = "") {MessageBox. show ("Enter the file address"); return;} readTxt. text = File. readAllText (pathTxt. text, Encoding. default); // do not need to escape "\

Previous Article: C # software development instance. customized screen tool (7) add magnifiers Although a magnifier is added, it is not easy to locate the pixel level. It is still difficult to change the location of one or two pixels when you use

// Base class using System; using System. collections. generic; using System. linq; using System. text; using System. threading. tasks; namespace MVATwentyQuestions {class Test {public string _ name = ""; public Test (string name) {_ name = name;}

The User table is usually used when we write the "XX management system" project. In some cases, the classification of personnel belongs to the tree structure, except for the highest and lowest layers, the middle layer has relative Parent and Child.

Attribute Class is called a feature. It is a Modifier that can be freely defined by users and can be used to modify various objects to be modified. Class, interface, attribute, method, etc. unlike annotations, annotations are discarded by the

App. ConfigThe application configuration file is a standard XML file, and the XML tag and attribute are case sensitive. It can be changed as needed. developers can use the configuration file to change the settings without re-compiling the

An error is always reported when others call the interface I wrote, but this test is okay. I just want to use log4net to trace it. After tracking, it is found that there is indeed an error log on the interface, but there is no specific error. By

In the previous article, we summarized the most basic Thread knowledge point of multithreading and learned how to start a new asynchronous Thread to do something. But when we want to enable multithreading, if we still use the Thread, we need to

To obtain the location information of the Code, the class System. Diagnostics. StackFrame is the key. The source code is as follows: 1 Using System; 2 Using System. Collections. Generic; 3 Using System.