Question

I’m having trouble with this piece:

if (a)
{
    if (b)    // when this check fails, I need to go v
        doSomething(); //                            v
}                      //                            v
else                   //                           < here
    doSomethingElse(); 

How do I do that?

UPD: if statements are nested because a checks if an object is not null, preventing exception caused by immediately checking for a null-object’s parameter.

Answer 1

The only way to do it short of employing goto where available is to guard the else branch of the outer if statement with a separate condition, rather than making it an else branch.

Assuming that there are calculations preceding the nested if that prevent you from performing both checks at once, you could do this:

bool done = false;
if (a) {
    ...
    if (b) {
        doSomething();
        done = true;
    }
}
if (!a && !done) {
    doSomethingElse();
}

However, if the code in your conditions literally consists of calling functions doSomething and doSomethingElse, there is no harm in duplicating the invocation of the doSomethingElse function inside the nested else branch.