We must call this method like this: var result = M圜lass.MyMethod() Hence, if we declare this: public class M圜lass Further, any variable declared as const will also, implicitly, be declared static.īut that begs the question: what does static do? StaticĪ static member (variable, method, etc) belongs to the type of an object rather than to an instance of that type. You want to use const when you have a variable whose value will not change, ever, during the time your application is being used. Public const M圜lass MyValue = new Class() Therefore, you cannot write either of these: public const DateTime DeclarationOfIndependence = new DateTime(1776,7,4) int, string, double) are allowed to be declared const. Only primitive or "built-in" C# types (e.g. The value in a const variable is what's called a "compile-time" value, and is immutable (which means it does not change over the life of the program). public const string ConnectionString = "YourConnectionString" ConstĪ variable declared as const must be assigned a value at declaration, and this value may not then change at a later time. Let's find out what the difference is between const, readonly and static variables in C#, and when we should use each of these keywords. So, Roger, this post is my official, on-the-record attempt at getting you an answer to your question. As many of my readers know, I don't enjoy being unable to explain things well. I made some stuff up tried my best to break it down, but I don't think I did a good enough job. In fact, you can also save to other directories, for example, if you have a common library used by multiple projects, do you want to copy multiple copies to each project, in fact, you can edit the classpath in the project to add the library, so you do n’t need to Copy to find your custom class.Just last week I had a new-to-ASP.NET developer (we'll call him Roger) ask me to explain what the difference was between a variable declared as const variable and that same variable declared as static readonly. fla file or mxml file, the compiler can find these classes. The default classpath is the root directory of the Flex or Flash project. For example, the compiler needs to know com directory where the compiler is to find the head by com classpathĭirectory. The compiler knows where to find the class. The class files are stored in a directory that matches the package path, for example:Ĭom.MessageManager must be stored in theĬom / examplecorp / net / messaging / email / directory. Package path relative to the classpath (class path), the default class path is the root directory of the project (that is, the package contains the directory mxml file), so the top-level package directory is the project root directory. A package is a unit that classifies classes, and its meaning is equivalent to a directory of a file system. In ActionScript 3.0 all classes must be placed in a package. For example: if your class is named Example, then the file name must be Example.as. Only one public class can be defined in each as file, and the class name must be the same as the file name. For the beginning of the scholars, so de classes must be placed. In ActionScript 3, classes are the most basic programming structure, so you must first master the basics of writing classes. Solution: Rename upload.cs to UploadHelper.as and remove the package name com.flex. Created a new upload.cs in the src folder
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