How to Catch Exceptions for an array of Tasks

I would like to understand how what I should be using inside of my "try" block when trying to await an Array of Tasks.

I want all tasks to be awaited, regardless if one of them threw an Exception, so that they can all complete.

Should I use:

var tasks = new Task<CasApiRouterModelExtendedInfo>[mbis.Length];

for (int i = 0; i < mbis.Length; i++)
{
    tasks[i] = CAS.Service.GetAllRouterInterfacesAsync(mbis[i], false, 2);
}

try
{
    Task.WaitAll(tasks);
}
catch (AggregateException ex)
{
    Trace.TraceError("Some interface discoveries failed: ");
    foreach (var innerEx in ex.InnerExceptions)
    {
        Trace.TraceError(innerEx.Message);
    }
}
foreach (var task in tasks)
{
    if (task.Status == TaskStatus.RanToCompletion && task.Result != null)
    {
        returnResults.Add(task.Result);
    }
}

OR

var tasks = new Task<CasApiRouterModelExtendedInfo>[mbis.Length];

for (int i = 0; i < mbis.Length; i++)
{
    tasks[i] = Task.Run(() => CAS.Service.GetAllRouterInterfacesAsync(mbis[i], true, 2));
}

try
{
    for (int i = 0; i < tasks.Length; i++)
    {
        tasks[i].Wait();
    }
}
catch (AggregateException ex)
{
    Trace.TraceError("Some interface discoveries failed: ");
    foreach (var innerEx in ex.InnerExceptions)
    {
        Trace.TraceError(innerEx.Message);
    }
}

foreach (var task in tasks)
{
    if (task.Status == TaskStatus.RanToCompletion && task.Result != null)
    {
        returnResults.Add(task.Result);
    }
}

Also, does that "task.Status == TaskStatus.RanToCompletion" return true as long as the task didn't throw an Exception (is this a good way to do this check)?