Conditional statements and iterations

In this section, we'll take a look at the conditional and looping statements that are available at compile time.

if...elseif...else

The if statement checks that a preprocessor variable is set to a certain value. If it does, the code between it and the closing endif statement will be compiled. Optionally, it can be followed by an elseif or e lse statement, allowing you to compile other code if the initial condition is false. The entire block must end with an endif. Here's an example that only compiles a Property element if the preprocessor variable myVar is equal to 10.

<?if $(var.myVar) = 10 ?>
    <Property Id="newProperty" Value="5" />
<?endif?>

Here's a more complex example that utilizes the elseif and else statements:

<?if $(var.myVar) = 10 ?>
   <Property Id="newProperty" Value="5" />
<?elseif $(var.myVar) > 10?>
   <Property Id="newProperty" Value="6" />
<?else?>
   <Property Id="newProperty" Value...