C#

C # basic knowledge (IV). C # Introduction and managed code The summer vacation is fleeting. From the ten-day education to the one-week tour of Jiangsu, Zhejiang, and Shanghai, I have experienced many things and learned many things during this long

[C #] analyzer error message: an ambiguous match is found. (1) Same variable name Protected System. Web. UI. WebControls. Label lbltitle; protected System. Web. UI. WebControls. Label lblTitle; (2) Check whether the control on your aspx

C # performance analysis of the three methods for determining null strings, 3Methods:String a = "";1. if (a = "")2. if (a = String. Empty)3. if (a. Length = 0) 3Methods are equivalent,Which method has the highest performance? I will illustrate the

C # buttons for adding control to the taskbarWindows7Taskbar usage: http://yunpan.cn/QauRaNK4H3BYW (extract code: fe58) encapsulated classes: Windows7Taskbar, ThumbButtonManager, ThumbButton, JumpListManager, RegistrationHelper Windows7Taskbar for

C # implement the "add control" button on the taskbar, Use of Windows7Taskbar Bytes : Http://yunpan.cn/QauRaNK4H3BYW (extract code: fe58) Encapsulated classes: Windows7Taskbar, ThumbButtonManager, ThumbButton, JumpListManager, RegistrationHelper,

Notes on returned values of ExecuteNonQuery (): executenonquery When querying whether data exists in a table, I use ExecuteNonQuery () and judge whether the value is greater than 0 to determine whether the data exists. The results are inconsistent

Define a real read-only List in C, The readonly keyword in C # indicates that fields in the class can only be initialized during definition or in the constructor. Normal data can achieve the expected results, but in the object or list, to achieve

C # The program runs as an administrator (three methods) Three methods: 1. Set Properties of the program: Check "run this program as administrator", and set "change all user settings-run this program as administrator" if necessary ", of course, this

C # How programmers learn the Android Development Series ListView The previous blog solved the problem of Android client interaction with server programs through WebService. This blog focuses on two issues: how Android applications interact with

C # basic knowledge (Part 5) ----------- C # NotesI. value Type and reference type 1> value type and reference type divide the data types we have learned into two parts. the division is based on the different types of data in the memory (stack)

C # generate a CHM File (using hha. dll in other articles ), Generally, the default path is C: \ Program Files \ HTML Help Workshop or C: \ Program Files (X86) \ HTML Help Workshop. To solve this problem, we can use hha. dll to compile the CHM file,

Load your own dynamic link library in C, I. backgroundC # And the new technical solution WEB Service are developed using a new language in the development of a new project. However, in the new project, some old modules need to be used, it is

C # Sleep Function, Namespace: using System. Threading; Thread. Sleep (500); // Sleep for 500 milliseconds, that is, 0.5 seconds   C language ^ how to use A1 = 0x01; // 0000 0001A2 = 0x00; // 0000 0000A3 = 0x03; // 0000 0011A4 = 0x02; // 0000 0010B1

[C #] programming to control the communication between a laptop bluetooth device and an external bluetooth deviceC # programming enables Bluetooth communication between laptops and external devices: in fact, after pairing, Bluetooth is simulated as

Singleton pattern and singletonpattern In many cases, we only need one object in a lifecycle, such as the thread pool, cache, dialog box, log, and graphics card driver. If multiple instances are created, many problems may occur, such as abnormal

C #: differences between classes and structures, 1. Reference Type and Value Type The class belongs to the reference type, while the structure belongs to the value type. Structure is copied when values are assigned. When a structure is assigned to a

C # create a message Interceptor (intercept) 3 Previously, the "Intercept" attribute (InterceptProperty) was added to the context of InterceptAttribute. Because InterceptProperty inherits IContributeObjectSink, we need to implement GetObjectSink (),

C # create a message Interceptor (intercept) 1 First, we need to create a custom Attribute so that it can have the context reading function. Therefore, this Attribute class must inherit both Attribute and IContextAttribute. There are two methods to

Share a fast Json (reverse) serialization open-source project Jil and jsonjil We do not lack the JSON serialization library, but we lack a library with excellent performance, which is very important for websites. Today I found Jil. He is an open

Reread C # InDepth (1)A good book, or a deep book, is a new discovery every time you study it. Okay, I admit that every time I read it, there is a general suspicion that it is always possible ~~ Over the past few years, I have been focusing on the