C#

Background: In a program, when you write an SQL statement, you may want to vary the SQL statement depending on the value of the variable. For example, the existence of variable stuname, depending on the value of the variable, to retrieve the student

namespaces: System.DiagnosticsStopwatch Instances can measure the elapsed time of a single time interval, or they can measure the total elapsed time of multiple time intervals. In a typical Stopwatch scenario, call the start method, then call the

1. Automatic attribute default initializationUsing code Public string Get Set " 001 ";Compiler-Generated code: Public classCustomer {[compilergenerated]Private stringKbackingfield ="Hello World"; PublicCustomer () { This. Kbackingfield ="Hello

C # NamePipe usage SummaryThe named pipeline in C # was recently used in a project, so I will write a summary here. Why use a named pipe? To exchange data between two programs. Assume that the following scenario is used. On the same PC, program A

Use fuse design mode protection software, fuse design mode Protection As software developers, our life is fast-paced. We adopt agile software development methods, develop our software functions iteratively, and submit for testing after development,

C # automatically select the most suitable IP address in the systemThis is because this problem has been encountered many times for a long time, but it is not taken seriously. This time I encountered this old problem, but Baidu did not get it

Using usage in C # I wrote an example about how to use wcf. There is a using () {} sentence in it. In the past, using not only references namespaces, but also has other functions.   The using keyword is used in C # in three ways:1. Used in

Parent class and subclass inheritance   1. ----- Constructor   Public class Human () { Public Human () { Console. Write ("Human Constructure Function "); } } Public Class Chinese (): Human { Public Chinese () { Console. Write

Mono C # a bug in the CompilerProblem Source One of my most recent projects was developed in C. This project is divided into the following parts: MySQL 5.5.23 database running in SUSE Linux Enterprise Server 11 SP1. The backend batch program

Character encoding in C # The file is encoded as GB18030, and the width of each line is 23 characters. Column 1-8 is the employee name, and column 10-23 is the salary. Now we need to write a C # program to calculate the average salary of the

Unity3D basics, unity3d Mouse event: OnMouseEnter (): enter with the mouse OnMouseExit (): move the mouse out OnMouseDown (): Click OnMouseUp (): move the mouse up Static GameObject Instantiate () Clone Static void Destroy ()   Position, material,

How to rewrite some default WebApi rulesWhy? Recently, the company has been promoting the SOA framework. For the first time, I have been very familiar with this technology (but I still ignore it). I feel pretty good. I just want to make some effort

C #. Transactions in SQL, C # Method 1:TransactionOptions transactionOption = new TransactionOptions (); // sets the transaction isolation level transactionOption. isolationLevel = System. transactions. isolationLevel. readCommitted; // set the

X01.TextProc: A small tool completed in two or three minutes. One goal is two or three. In work, if you encounter such a problem, you need to enter the product number in the Excel table, which is similar to 2134-1234-4456, into the program of the

C # class, static class,   C # is a computer language of the object-oriented type. class is used to embody the concept of object-oriented. Classification) In the real world, we will encounter many classified things. For example, animals, automobiles,

XML serialization, deserialization, and XML serialization XML serialization and deserialization using generics.1. serialization /// /// serialize an object to string /// /// Object Type / // object to be serialized // serialized string public

Csharp: Export or Import excel using MyXls, csharpmyxls Excel 2003 (unsatisfactory results) Using System; using System. collections. generic; using System. componentModel; using System. data; using System. drawing; using System. linq; using System.

C # add, delete, and modify winform DataTable batch data processing ., 1. Batch addition, using efficient SqlBulkCopy SqlBulkCopy DTS = new System.Data.SqlClient.SqlBulkCopy(con); DTS.NotifyAfter = 1;

Tutorial on playing principles of Peking University qingbird KTV: Yuan Yuming and Yuan Yuming Step 1: Create a Song class // Song name Public string SongName {get; set ;} // Song Lu Jin Public string SongPath {get; set ;} Step 2: Create a ListSong

What is the delegate in C ?, Overview The delegate is similar to the function pointer in C ++, but it is different. In C ++, the function pointer is not of type security and points to a location in the memory. We cannot determine what the pointer