C#

# And # meanings and differencesTo put it simply, # concatenate a string and # concatenate two parameters to expand in the Program # define defines the symbols and macros. Several steps are required. 1. When calling a macro, first check the

Difference between attribute and field: difference between attribute Fields From the declaration of the two, the public field is only a simple public variable exposed by the public modifier of the class.The attribute is the encapsulation of the

The effect of the order of statements in c # On the results, 1 using System; 2 using System. collections. generic; 3 using System. linq; 4 using System. text; 5 6 namespace Test05 7 {8 /// 9 /// custom class, encapsulate the ADD and add attributes 1

Structure instantiation, structure instance 1 using System; 2 using System. collections. generic; 3 using System. linq; 4 using System. text; 5 6 namespace Test08 7 {8 class Program 9 {10 // public struct Round // define a circular structure 11 // {1

There is a lot of inventory here you know! (For interested parties !), Inventory Intention Kindergarten taipan, Mo Priority for massive inventory First, go to my inventory management system and you will find that there is no big difference with

. Net data cache (2) Redis deployment,. netredis Today's business systems are becoming more complex, large portal websites are becoming more and more content, and the database data volume is growing. Therefore, the concept of "Big Data" has emerged.

C # object comparison (Value Type and reference type) ////// Compare the referenced object //////////// Public static bool CompareObject (object objA, object objB) {bool flag = false; if (objA = DBNull. value | objB = DBNull. value | objA = null |

Multithreading in. NET (using Task 3),. nettask   The previous section describes the concepts and usage of thread pools. We can find that ThreadPool. QueueUserWorkItem is a method that does not work after the thread is started. However, in actual

About Auto-suitability of OpenXml SpreadSheet column width based on content, openxml deletes sheetBecause of a previous requirement, the excel width is automatically adapted. So recently I have been reading Excel-related content, from the structure

Introduce multithreading in. NET (1 concept), and elaborate on. net  Why multithreading?   When an application performs a large number of operations, in order to ensure that the application can be input by the corresponding customer at any time, at

NPOI is a simple export and import method. First of all, when I first met anonymous export, I was the first company in Beijing. I simply declared that an object could be exported. At that time, I felt very tall and wanted to study it myself, however,

ADO. NET database parameterization, ado.net database Parameters Database parametric transmission enhances data security, but reduces development efficiency. Therefore, the following functions are created to solve this problem: public static string

C # various application classes of Json strings, In a program, everything and information can be described and carried by objects. In addition to the popular xml, there is also a simple and fast way to process the target information, that is, Json

Part 95 to 96 Deadlock in a multithreaded program, deadlock Part 95 Deadlock in a multithreaded program Class Program {static void Main (string [] args) {Console. writeLine ("main start"); Account a1 = new Account (5000); Account a2 = new Account ();

Part 30 to 31 Talking about Interfaces in c #, Part 30 Interfaces in c # We create interfaces using interface keyword. just like classes interfaces also contains properties, methods, delegates or events, but only declarations and no implementations.

C # basic knowledge record 1,  C # basic knowledge record 1 Static void Main (string [] args) { # Use of region merge operators (merge operators ??) For more operators, see https://msdn.microsoft.com/zh-cn/library/ms173224 (v = vs.100). aspx Int? X =

C # Knowledge System (I) --- commonly used LInq and lambda expressionsLinQ is one of our common technologies. We need to make a series of adjustments to the data, such as sorting, conditional filtering, summation, grouping, and multi-table join.

Use C # to interact with Xero OAuthThis article mainly introduces the integration process with xero OAuth. The integration process with other third-party OAuth will be similar later. In addition, the xero official documentation is very limited, so

C # Learning diary 10 ---- C language conversion In C # Learning diary 08 --- character type, I left a question: how to use C to write a hexadecimal conversion program. Now I will remove this sequent:   # Include Int main () {printf (Please

C # Learning diary 09 --- structure of data type (Struct) The structure type of the numeric type (struct type ): After learning the previous simple types, we are already doing some common data operations and text processing. However, when we