C#

C # winform converts a color image to a gray image, which is a gray image with a high speed: safe, unsafe, Convert a color image to a gray image and use it directly. net interface traversal of each pixel conversion efficiency is very low, 0.65

Data storage loss caused by call of flush is useless. Call flushData storage loss caused by call of flush is useless When saving a string to a file, we use the following method. In most cases, you can directly Save the data to the file, Using (var

1 mysql-h localhost-u root-p123456 log on to the mysql server 2 show databases list all databases 3 use www select a www database 4 show tables List Data tables of the database 5 create table emp (id int auto_increment, name varchar (20), birdate

Public class TestMain {public static void main (String [] args) {AbstractTest. out ();}} Public class TestMain {public static void main (String [] args) {AbstractTest. out ();}} The above program can be run. Understanding: In general,

The Bubble Sorting Algorithm is often seen, especially in some pen questions. next we will discuss the Bubble Sorting in c #. I have provided three solutions and will analyze their respective performance advantages and disadvantages. the first

In C #, a variable of the value type or reference type is declared. Whether or not an initial value is assigned to the variable, the variable has the default value: For example, declare the reference type variable: string a, which is equivalent to

Many languages allow programmers to use Operator overloading. Although programming, this is not necessary, it can improve the readability and convenience of the Code. The simplest example is to use the "+" operator to directly connect strings when

Here I will talk aboutC #Small column child (Attackers can bypass this area!), We usually develop a lot in xp, but now many developers have developed it in win7. Below isLocalMachineThe following registry operations will not be detailed. Private

Currently, the apsaradb for Redis server uses the console to run the program. It is better to run the program in the background as a windows service during deployment. Find an article Running Redis as a Windows Service, which is implemented by using

C # obtain the path String str1 = Process. GetCurrentProcess (). MainModule. FileName; // obtain the file name of the currently executed exe.String str2 = Environment. CurrentDirectory; // obtain and set the fully qualified path of the current

Reflection allows us to obtain the Assembly metadata during the compilation or runtime. through reflection, we can:● Create an instance of the type● Trigger Method● Get attributes and field information● Delayed binding...... If reflection is used

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 the first blog post about this framework, DalBase has introduced the design idea. The DBHelper

1. Background In the past few days, an old friend asked me to make a small software program to play videos in WinForm. In the impression, Microsoft has a WM control that can be used directly. 2 Implementation Method 2.1 Microsoft grassroots The

Every trace of action in the program will increase the burden on the program running. When learning the program at the beginning, we often do not consider the program running efficiency. In most cases, we want to implement the function, as long as

When new learners can not make sure the usage scenarios of readonly and const keywords. in my opinion, the main reason of using readonly keyword is the efficiency. but in most occasions, efficiency isn't treated as the high level. so I'm willing to

Yesterday, we needed to operate on the csproj file using code to implement switching between different vs versions. After XElement is used to read the csproj file, the desired object cannot be obtained. The content of the csproj file is as follows:

When multithreading is used, there is usually a certain amount of public data. To prevent multiple threads from simultaneously operating the same data, we need to lock the thread. Locking Principle: Each referenced object has a Synchronous Index

Original article: http://blog.csdn.net/apollokk/article/details/23742149 Today, we are planning to change the bug and report "try to read or write the protected memory. This usually indicates that other memory is damaged. "I thought it was a

C # connecting to a database is not applicable to java in terms of classes. Different databases have different class libraries. Only the connection class of SqlServer is used here. Public class DbLink {private string config = ConfigurationManager.

MD5 Overview:The full name of MD5 is Message-Digest Algorithm 5, which was invented by MIT's computer science lab and RSA Data Security Inc in Early 1990s and developed by MD2, MD3, and MD4. MD5 converts a "Byte string" of any length into a large