.NET / C# – Convert char[] to string
There’s a constructor for this: char[] chars = {‘a’, ‘ ‘, ‘s’, ‘t’, ‘r’, ‘i’, ‘n’, ‘g’}; string s = new string(chars);
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Deserialize JSON object into dynamic object using Json.net
Json.NET allows us to do this: dynamic d = JObject.Parse(“{number:1000, str:’string’, array: [1,2,3,4,5,6]}”); Console.WriteLine(d.number); Console.WriteLine(d.str); Console.WriteLine(d.array.Count); Output: 1000 string 6 Documentation here: LINQ to JSON with Json.NET See also JObject.Parse and JArray.Parse
Is DateTime.Now the best way to measure a function’s performance? [closed]
No, it’s not. Use the Stopwatch (in System.Diagnostics) Stopwatch sw = Stopwatch.StartNew(); PerformWork(); sw.Stop(); Console.WriteLine(“Time taken: {0}ms”, sw.Elapsed.TotalMilliseconds); Stopwatch automatically checks for the existence of high-precision timers. It is worth mentioning that DateTime.Now often is quite a bit slower than DateTime.UtcNow due to the work that has to be done with timezones, DST and such. … Read more
WCF – How to Increase Message Size Quota
You’ll want something like this to increase the message size quotas, in the App.config or Web.config file: <bindings> <basicHttpBinding> <binding name=”basicHttp” allowCookies=”true” maxReceivedMessageSize=”20000000″ maxBufferSize=”20000000″ maxBufferPoolSize=”20000000″> <readerQuotas maxDepth=”32″ maxArrayLength=”200000000″ maxStringContentLength=”200000000″/> </binding> </basicHttpBinding> </bindings> And use the binding name in your endpoint configuration e.g. … bindingConfiguration=”basicHttp” … The justification for the values is simple, they are sufficiently … Read more
What is the difference between Nullable.HasValue or Nullable != null?
The compiler replaces null comparisons with a call to HasValue, so there is no real difference. Just do whichever is more readable/makes more sense to you and your colleagues.
Asynchronously wait for Task to complete with timeout
How about this: int timeout = 1000; var task = SomeOperationAsync(); if (await Task.WhenAny(task, Task.Delay(timeout)) == task) { // task completed within timeout } else { // timeout logic } And here’s a great blog post “Crafting a Task.TimeoutAfter Method” (from MS Parallel Library team) with more info on this sort of thing. Addition: at … Read more
Using async/await for multiple tasks
int[] ids = new[] { 1, 2, 3, 4, 5 }; Parallel.ForEach(ids, i => DoSomething(1, i, blogClient).Wait()); Although you run the operations in parallel with the above code, this code blocks each thread that each operation runs on. For example, if the network call takes 2 seconds, each thread hangs for 2 seconds w/o doing … Read more
How do you unit test private methods?
If you want to unit test a private method, something may be wrong. Unit tests are (generally speaking) meant to test the interface of a class, meaning its public (and protected) methods. You can of course “hack” a solution to this (even if just by making the methods public), but you may also want to … Read more
HashSet vs. List performance
A lot of people are saying that once you get to the size where speed is actually a concern that HashSet<T> will always beat List<T>, but that depends on what you are doing. Let’s say you have a List<T> that will only ever have on average 5 items in it. Over a large number of … Read more
The name ‘ConfigurationManager’ does not exist in the current context
It’s not only necessary to use the namespace System.Configuration. You have also to add the reference to the assembly System.Configuration.dll , by Right-click on the References / Dependencies Choose Add Reference Find and add System.Configuration. This will work for sure. Also for the NameValueCollection you have to write: using System.Collections.Specialized;