How to make inline functions in C#

Question

I\'m using Linq To XML

new XElement(\"Prefix\", Prefix == null ? \"\" : Prefix)

but I want to do some computation to the prefix before addi

Answer 1

C# 7 adds support for local functions

Here is the previous example using a local function

void Method()
{
    string localFunction(string source)
    {
        // add your functionality here
        return source ;
    };

   // call the inline function
   localFunction("prefix");
}