C#

C # differences between delegate and event, In general, a delegate is a class that maintains a field internally and points to a method. An event can be considered as a delegate type variable. Multiple delegates or methods can be registered or

[C #] the combination of hardware and software-the reverse gameplay of cool music box5.1. C # serial port communication 5.1.1. Obtain the list of currently available serial ports. Copy code 1 // Get all port list for selection 2 // obtain the list

Thinking about the problem that the list add element overwrites the previous element, listadd A very interesting problem was found in the code wall recently. It defines a reference object. If the object is defined outside the loop, list in the loop.

After clicking the button each time, determine whether the page already has a row. If no repeater row is displayed, and assign it a value. If no repeater row exists, click repeater. Protected void btnAdd_click (object sender, EventArgs e){ Try{ //

C # array [1], Array: an array of several variables of the same type. The collections of these sort-by-order data elements are called arrays.Define an arrayInt [] variable name = new int [n]; String [] myStringArray = new string [6]; Int [] myArray =

Simulate the exact match search in Visual Studio, and the studio exact matchSimulate exact search in Visual Studio  Public enum EnumDataType {Chinese = 0, English = 1, number = 2, special character = 3, Chinese and special character = 4, English and

Submission and revocation of WPF data editing, and revocation of wpf editing When you add or edit an item to a set (usually bound to a DataGrid or other ItemsControl controls), an attribute of the edit item is usually displayed on the editing page.

C # Save the image to the database and read the image from the database and display it, How to save images to a database: Public void imgToDB (string SQL){// The imge variable name required to be saved in the parameter SQL is @ images// Call method

Brief descriptions of classes and objects, brief descriptions of class objects First, open your mind     I. Based on the trend of Mind Map, there are four small points between classes and objects. First, let's talk about the relationship between

I. SuperIO communication mechanism. SuperIO Communication Mechanism1.1 application scenarios Communication Platform interaction objects include two aspects: first, interaction with hardware products. 2. Interaction with software products. Generally,

[C # Study Notes] 2. object-oriented programming,2.1 abstract classes and interfaces 1) Concept Abstract classes are special classes, but they cannot be instantiated. In addition, they have other characteristics of the class. It is important that

How to build a lightweight DI (dependency injection) and di Injection Concept: dependency injection is similar to the factory mode in IOC mode. It is a mode that solves the dependency coupling between callers and callers. It solves the dependency

Exploring recursive APS and CPS in c #The Accumulator passing style tail recursion is optimized so that the stack does not need to save the last returned address/status value, so that the recursive function is called as a common function. Recursion

. NET zero-basic entry 05: Delegation and events,. net entry 05 Delegation I. Preface In this section, we need to stop our game development. Although it is not perfect yet, it is very simple and even contains bugs. However, to better understand C #,

Csharp: read excel using Aspose. Cells, csharpaspose. cells /// ///// /// /// public static System. data. dataTable ReadExcel (String strFileName) {Workbook book = new Workbook (strFileName); // book. open (strFileName); // old version

C # understanding of Calling c ++ dynamic librariesC # Call the c ++ dynamic library. Generally, we write [DllImport ("UCamer. dll ", CallingConvention = CallingConvention. winapi)] public extern static void Disp_Destroy (IntPtr hShow); the first

When to use the var keyword and the var keyword C # keywords come along with. NET 3.5 and later, along with anonymous functions and LINQ. the compiler will help us deduce the specific types. In general, when a variable is a local variable

VS file synchronization plug-in development, vs synchronization plug-inI. Plug-in Function Description The plug-in monitors an xml file. When a new element is added to the file, the new element is synchronized to the specified directory when it is

How Should Redis be used ?, Redis exploitation? Redis is a good thing. After two weeks of research and practice, the original local memory cache is largely replaced in the project. However, during the replacement process, we found that Redis is a

(2) Use log4net to write custom database logs and log4net Databases1. Configure the Project Environment 1.1 this article only shows the operations to modify the configuration. For the first time you introduce the log4net environment, refer to the