C# Call Functions by Name. C# Programming > Miscellaneous. C# Function. Calling functions in C#. NET is one of the most basic aspects of programming . NET applications. C# developers extensively use C# functions to structure code and efficiently accomplish tasks. However what many developers do not know is that there is more than one way to call a function. Calling Functions. The simplest and most common way to call a function in C# is to do so directly. Some functions return a value, some do not (or . Similarly some functions take parameters while others do not. Some example C# function calls: show. Message(). int result = multiply(3, 4); That is the most effective way to call a C# function in most cases. However more complex applications and more advanced implementations could require a different way to access functions. Reflection. The System. Reflection namespace holds a variety of classes and functions that takes C# programming to another level. Similarly to accessing properties by name, a C# function can be invoked from its string name. For example, let's take show. Message from our example above. The function does not return a value and does not take parameters. To call it with . NET reflection it would be done something like so: Type t = this. This program is divided in two functions. At the moment of the function call. Then, inside addition, another local variable is declared. This C# example program demonstrates the GetMethod method from System.Reflection. How to call another.exe in C#? I want to call another executable file (.exe) in my program. Introduction to Functions in C#. Let's define another function MyAge(). Get. Type(). Method. Info method = t. Get. Method(. If you get a null- object exception that means the method was not found. The method has to be public for it to be able to be invoked through reflection. Also obfuscating the C# application can potentially cause the name of the method to change, which will cause the code to fail. These are just things to keep in mind. Now let's try to invoke the multiply function from the example above, which takes parameters and returns a value. The code is not all that different: Type t = this. Get. Type(). Method. Info method = t. Get. Method(. Having different ways to call functions gives developers flexibility. Back to C# Article List. A chapter on Function parameters in the complete Microsoft C#.NET. If you run the program. Write a program to explain method in C#. Create a static function add() that accept two number from user and returns sum of the number. C# Call Function From Another Program Is Currently Using This File
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
January 2017
Categories |