C#

In Explorer, select the "details" view, and you can see many file attributes, the resolution of a piece, the artist of MP3, the bit rate, the resolution of a video file, and so on, sometimes it may be difficult to obtain in C #. Image is used to

The NPOI component is powerful and efficient. Here we only use it to write data in Excel. If you need more content, please search for it by yourself. IWorkbook: The workbook object, which can be instantiated by NPOI. HSSF. UserModel. HSSFWorkbook.

Abstract Factory mode: provides an interface for creating a series of related or mutually dependent objects without specifying their specific classes. The biggest advantage of the abstract factory mode is that it is easy to switch the product series.

I believe that we often hear about processes and threads. Of course, this must be useful. What is a process? Books are processes. You will find that my computer runs multiple processes. For previous single-core computers (it can only execute

The Panel uses the Loader method to call the page for content loading.Note the following key points: Home page: Background code: protected void

Literacy description Literacy uses the IL command to generate a method delegate. In terms of performance, it is much higher than reflection when the number of calls reaches a certain level. Of course, it takes time to generate a method using the IL

In this case, DataRow is converted to a single entity, and dataTable is converted to a List generic type, which supports time format conversion. The following methods are all extension methods. The extension method must be written in a static class,

Based on the introduction in the previous two articles, I believe you will understand the practical value of MEF. We also discussed import and export in the previous article. for export and import, we will go deeper today. Well, it's just a little

SQLBulkCopy is used for transferring large volumes of data between databases. It is usually used to update data between new and old databases. Even if the table structure is completely different, you can smoothly export data through the

In the previous article, almost every example involves the search location of the extension class. We may also consider that since it is auto scaling, it will certainly have one or more people to search for. Otherwise, how does the MEF framework

(PS: Preface: Required After reading some comments, I felt that some people were very impetuous. Even if I didn't figure out the center I described in the article, I 'd like to give you some big hats, the impetuous heart is the secret of our

In the project, you must use various ORM types, such as NH, EF, and fluent Data. However, as I have been using ORM over the past few years, as the database structure becomes more complex and custom queries become more and more popular, a problem

I. Introduction In a software system, you sometimes need to create a complex object, which is composed of the molecular objects of each part through certain steps .. The following is an example of the builder mode.Ii. detailed introduction of the

The first C # program: Using System; // import the namespace class Test // class declaration {Static void Main () // method declaration { Int x = 12*30; // Statement 1 Console. WriteLine (x); // Statement 2} // method end }

When yao Bena is selected, the sound fails. The brilliant appearance of "we are together", just like her singing, the higher the song, the higher the song. File Processing, encryption and decryption, encryption and decompression, split and merge. In

I forgot such a simple question. Do you still remember? Str1 = len2 = leng = ++ The console execution result is For the length of a byte, one Chinese Character corresponds to two bytes.   Take a look at char nchar varchar nvarchar in SQL

1. Create a word template,Use MergeFeildBind dataString [] fieldNames = new String [] {"UserName", "Gender", "BirthDay", "Address "}; object [] fieldValues = new Object [] {"Zhang San", "male", "1988-09-02", "Xianyang, Shaanxi "};Create a template

  C # parsing JSON has always been a headache. I found a good method on the internet because all kinds of materials are older. Start NuGet, search Newtonsoft. Json, and install it. This is a very good Json Parsing Library. It is very good and

I. Introduction When talking about the disadvantages of the simple factory model in the simple factory model, one thing is that the system in the simple factory model is difficult to expand. Once a new product is added, You have to modify the simple

Play a single song Player. URL =   Add multiple songs to the playlist   IWMPPlaylist playList = player. playlistCollection. newPlaylist (); (DataRow drItem = player. newMedia (drItem []. ToString (); = Or add it directly to the current list. (