Question

Python’s for and while loops include an optional else clause which execute if the loop exits normally (i.e. without a break statement). For example, in Python you could code:

for x in range(3):
    print(x)
else
    print("The loop exited normally")

And the output will be:

0
1
2
The loop exited normally

How would you accomplish something similar in C# in order to code something like the following:

for (int i = 0; i < 3; i++)
{
    Console.WriteLine(x);                  
}
else
    Console.WriteLine("The loop exited normally");

Answer 1

The Python Construct for foreach-else is like this:

foreach( elem in collection )
{
    if( condition(elem) )
        break;
}
else
{
    doSomething();
} 

The else only executes if break is not called during the foreach loop

A C# equivalent might be:

bool found = false;
foreach( elem in collection )
{
    if( condition(elem) )
    {
        found = true;
        break;
    }
}
if( !found )
{
    doSomething();
}

Source: The Visual C# Developer Center