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ASP.NET Basics (part 6): Fully Function-al
Modularize your code in C# by abstracting it into functions.

| The Right Spirit |

Let's take a simple example, which demonstrates how to define a function and call it from different places within a C# script:

<script language="c#" runat="server">

// define a function
void guaranteedPickMeUp()
Response.Write("Long Island Iced Tea");

void Page_Load()

// the first question...
Response.Write("What's the only thing that cheers me up when I'm down?<br>");

// call the function

// ... followed by another
Response.Write("<br>What contains a virtual menagerie of spirits, guaranteed to leave your head banging in the morning?<br>");

// call the function
<head><title>A Few Drinks</title></head>

View it in your browser  - you should see something like this:

Output image

Let's take this line by line. The first thing I've done in my C# script is define a new function with the "function" keyword; this keyword is followed by the name of the function and the data type of the return value of the function. I have used "void" here because our function, in its current state does not return any value (more on this at a later date, though). In the example above, the function has been named "guaranteedPickMeUp".

All the program code attached to that function is then placed within a pair of curly braces - this program code could contain loops, conditional statements, calls to other functions, or calls to other C# functions. Function names are case-sensitive in C#, so be careful when invoking them.

Here's the typical format for a function:

return_data_type function_name ( optional function arguments )
statement 1;
statement 2;
statement 3;
statement n;

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