Question: I commonly employ a while loop that continues to try some operation until either the operation succeeds or a timeout has elapsed:

```
bool success = false
int elapsed = 0
while( ( !success ) && ( elapsed < 10000 ) )
{
     Thread.sleep( 1000 );
     elapsed += 1000;
     success = ... some operation ...     
}

```

I know there a couple of way to implement this, but the basic point is that I repeatedly try some operation with a sleep until success or I've slept too long in aggregate.

Is there a built-in .net class/method/etc to save me from re-writing this pattern all over the place? Perhaps input is an Func(of bool) and the timeout?

**Edit**  
Thanks to all who contributed. I opted for the sleep() approach because it was the least complicated and I'm totally anti-complexity =) Here's my (still needs to be tested) implimentation:

```
 public static bool RetryUntilSuccessOrTimeout( Func<bool> task , TimeSpan timeout , TimeSpan pause )
    {

        if ( pause.TotalMilliseconds < 0 )
        {
            throw new ArgumentException( "pause must be >= 0 milliseconds" );
        }
        var stopwatch = Stopwatch.StartNew();
        do
        {
            if ( task() ) { return true; }
            Thread.Sleep( ( int )pause.TotalMilliseconds );
        }
        while ( stopwatch.Elapsed < timeout );
        return false;
    }

```

Answer: 
You could use `SpinWait.SpinUntil`

See <https://msdn.microsoft.com/en-us/library/dd449238(v=vs.110).aspx>

```
bool spinUntil = System.Threading.SpinWait.SpinUntil(() => job.IsDisposed, TimeSpan.FromSeconds(5));

```
I don't know that there's any existing thing, but I would think you could create a method to that would accept the timeout and the success-determination function. Something like this:

```
public static bool KeepTrying(int timeout, Func<bool> operation)
{
    bool success = false;
    int elapsed = 0;
    while ((!success) && (elapsed < timeout))
    {
        Thread.Sleep(1000);
        elapsed += 1000;
        success = operation();
    }
    return success;
}

```

or maybe your Function could be more "robust" and you could couple it with flexible arguments:

```
public bool KeepTrying(int timeout, Func<object[], bool> operation, params object[] arguments)
{
    bool success = false;
    int elapsed = 0;
    while ((!success) && (elapsed < timeout))
    {
        Thread.Sleep(1000);
        elapsed += 1000;
        success = operation(arguments);
    }
    return success;
}

```