How do you handle huge if-conditions?

Question

It\'s something that\'s bugged me in every language I\'ve used, I have an if statement but the conditional part has so many checks that I have to split it over multiple lines, u

Answer 1

I like to break each condition into descriptive variables.

bool isVar1Valid, isVar2Valid, isVar3Valid, isVar4Valid;
isVar1Valid = ( var1 == 1 )
isVar2Valid = ( var2.Count >= 2 )
isVar3Valid = ( var3 != null )
isVar4Valid = ( var4 != null && var4.IsEmpty() == false )
if ( isVar1Valid && isVar2Valid && isVar3Valid && isVar4Valid ) {
     //do code
}