C#

Operating system: Windows XP SP3 Development tools: Visual Studio 2008 Language: C # 3.0 . NET framework:3.5 It is often necessary to write the specified information, including exception information and normal processing information, to the log

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The definition of polymorphism in C # is that the same operation works on instances of different classes, different classes are interpreted differently, and results are different. In other words, an interface, multiple functions. C # supports 2

First, Introduction In the previous article I described how to use SIGNALR to implement image transfer, and then for instant messaging applications, message reminders are essential. Many websites now have reminders for new messages. Naturally for

. xls format Office2003 and the following versions . xlsx format Office2007 and later Comma-delimited string literals in the. csv format (you can save both of these file types in this format) There are two different ways to read the first two

Only before that SQL Server support data Bulk INSERT, but not surprisingly, Oracle, SQLite and MySQL is also supported, but Oracle needs to use the Orace.dataaccess driver, today to post a number of database batch insert solution. First of all,

In the previous project, if there is a need to use verification code, the basic is their own use of GDI + drawing out, simple and useful, but there are also some small problems, first, if less interference line, then the security is not very high,

5. Gradient Fill You need to use two brushes: Linear gradient Brush (LinearGradientBrush) Path gradient Brush (Pathguadientbrush) private void Button4_Click (Object Sender,system.eventargs e) { Drawing surface Graphics g

An array is an ordered collection of items that have the same data type. To access an item in an array, you need to use both the array name and the offset between the item and the start of the array. In C #, the method of declaring and using arrays

C # Generic Collections before we understand that collections are an important concept in OOP, the full support for collections in C # is one of the best of the language. C # generics are new elements in C # 2.0 (called templates in C + +) and are

Just to get the name of the function, we embed a hard-coded string in the body of the function, which is tedious and prone to error, rather than looking at how to use the new C99 feature to get the function name when the program runs. Object

Use the Entity Framework (EF) code in quick custom NopCommerce for priority migration, nopperformanceef I have seen many users in the nopCommerce forum asking them how to use Entity Framework (EF) code to migrate the code first to customize

. Net open-source oss project progress updates (including small program interfaces), oss project progress I would like to share with you the progress of the current open-source OSS project: 1. OSS. Common [Open Source China] [github] After

The confusions encountered when learning generics are often confused with func , funcThe confusion encountered when learning generics is often confused with func . The last value is always considered to be the return type. Now let's make a

. Net language APP development platform-Smobiler Learning Log: How to quickly implement the CandleStickChart control on mobile phones,. net Smobiler is a development platform that uses the. Net language to develop apps in the VS environment. It may

Three basic features of object-oriented, basic features of object-oriented I recently found an object-oriented introduction. After reading this article, it feels good and easy to understand, so I will repost it for you !!!   Three basic features of

HttpContext. Current. Request. ServerVariables, httpcontext. current Request. ServerVariables ("Url ")Back to server addressValue 0:/WebSite1/Default. aspx Request. ServerVariables ("Path_Info ")Path information provided by the clientValue

C # I = 0; I = I ++, what is the value of I ?, Yesterday I watched the dalao chat in the group. Someone asked this question. This question should be quite common  Int I = 0, t; For (t = 0; t { I = I ++; Console. WriteLine (I ); } Daxie said that for

C # Use "+" and string. format to format string connections, Reference: http://www.liangshunet.com/ca/201303/218815742.htm There are two commonly used connections between strings: "+" connections, string. format formatted connections, and

C # -- pass the value parameter (2 ), // My C # is followed by Meng Ge (Liu tiemeng) (my formal teacher), and I learned "C # getting started with languages, I also explained some things I don't know. It's a huge fortune and a rare mentor!   This