Razor function is exactly similar to C#/vb.net methods/Function. These features came asp.net MVC 3.0 onward. Here we can write the frequently used functionality inside the function.
Here I will show how to use in Razor function in view
We have to give function syntax like this
// Here will be C# method
For calling the function Just give @MethodName
Note: I hope you are aware of creating view in asp.net MVC.