Difference between await and Task.Wait

Question

First way:

var tds=SearchProcess();
await tds;

public async  Task<XmlElement> SearchProcess()
{
}

Second way:

var tds= Task.Factory.StartNew(()=>SearchProcess());
Task.WaitAll(tds);

public XmlElement SearchProcess()
{
}

In above both approach any performance difference is there?

http://stackoverflow.com/questions/9519414/whats-the-difference-between-task-start-wait-and-async-await — Nagaraj S, Dec 27 '13 at 12:19
http://stackoverflow.com/questions/13140523/await-vs-task-wait-deadlock?rq=1 — Anand Thangappan, Dec 27 '13 at 12:19

score 8 · Answer 1 · answered Dec 27 '13 at 12:21

Task.WaitAll is blocking, while using await will make the containing method async. To wait for multiple tasks asynchronously you can use Task.WhenAll:

public async Task DoSomething()
{
    IEnumerable<Task> tds = SearchProcess();
    await Task.WhenAll(tds);
    //continue processing    
}

Difference between await and Task.Wait

1 Answers1