├── .gitattributes ├── .gitignore ├── ParallelClassExercise.csproj ├── ParallelClassExercise.sln ├── Program.cs └── README.md /.gitattributes: -------------------------------------------------------------------------------- 1 | ############################################################################### 2 | # Set default behavior to automatically normalize line endings. 3 | ############################################################################### 4 | * text=auto 5 | 6 | ############################################################################### 7 | # Set default behavior for command prompt diff. 8 | # 9 | # This is need for earlier builds of msysgit that does not have it on by 10 | # default for csharp files. 11 | # Note: This is only used by command line 12 | ############################################################################### 13 | #*.cs diff=csharp 14 | 15 | ############################################################################### 16 | # Set the merge driver for project and solution files 17 | # 18 | # Merging from the command prompt will add diff markers to the files if there 19 | # are conflicts (Merging from VS is not affected by the settings below, in VS 20 | # the diff markers are never inserted). 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3 | 4 | //Parallel.For(0, 100, i=> 5 | //{ 6 | // Console.WriteLine("Something..."); 7 | // Console.WriteLine(i.ToString()); 8 | 9 | //}); 10 | 11 | 12 | //Parallel.For(0, 100, (i, state) => 13 | //{ 14 | // Console.WriteLine($"Beginning iteration {i}"); 15 | // Console.WriteLine(state.IsExceptional); 16 | //}); 17 | 18 | 19 | 20 | //Parallel.For(0, 100, new ParallelOptions { MaxDegreeOfParallelism = 1 }, i => 21 | //{ 22 | // Console.WriteLine(i.ToString()); 23 | //}); 24 | 25 | 26 | 27 | 28 | //Parallel.For(0, 100, delegate(int i) 29 | //{ 30 | // Console.WriteLine(i.ToString()); 31 | //}); 32 | 33 | 34 | 35 | //static void SampleMethod(int i) 36 | //{ 37 | // Console.WriteLine(i.ToString()); 38 | //} 39 | 40 | 41 | #endregion 42 | 43 | 44 | 45 | #region ParallelForEach 46 | 47 | //var ArrayOfString = new[] {"1-Benz", "2-BMW", "3-Nisan", "4-Kia" }; 48 | 49 | //await Parallel.ForEachAsync(ArrayOfString, async (item,token) => 50 | //Console.WriteLine(await Add2023ToCarBrandAsync(item))); 51 | 52 | 53 | //async Task Add2023ToCarBrandAsync(string carBrand) 54 | //{ 55 | // return await Task.FromResult(carBrand+"-2023"); 56 | //} 57 | 58 | 59 | 60 | #endregion 61 | 62 | #region ParallelInvoke 63 | 64 | using System.Runtime.CompilerServices; 65 | 66 | //Parallel.Invoke( 67 | // () => Console.WriteLine("1"), 68 | // () => Console.WriteLine("2"), 69 | // () => Console.WriteLine("3"), 70 | // () => Console.WriteLine("4") 71 | // ); 72 | 73 | Parallel.Invoke(new ParallelOptions { MaxDegreeOfParallelism = 2 }, FirstJob, SecondJob); 74 | 75 | 76 | #endregion 77 | 78 | 79 | static void FirstJob() 80 | { 81 | Console.WriteLine("First Job..."); 82 | } 83 | 84 | static void SecondJob() 85 | { 86 | Console.WriteLine("Second Job..."); 87 | } 88 | 89 | 90 | Console.WriteLine("Finished!"); 91 | 92 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ParallelClassExercise 2 | Parallel Class in .NET 6 explained 3 | 4 | 5 | The Parallel class is a class in C# that provides methods for parallel programming.Parallel programming is a way of writing code that can execute multiple tasks at the same time on different threads or cores. 6 | 7 | The Parallel class has three main static methods: 8 | 9 | • Parallel.For: Executes a for loop in which iterations may run in parallel 10 | 11 | • Parallel.ForEach: Executes a foreach loop in which iterations may run in parallel 12 | 13 | • Parallel.Invoke: Executes multiple actions in parallel 14 | 15 | These methods can help you improve the performance and responsiveness of your applications by using all the available CPU resources (learn.microsoft.com). However, they also require careful synchronization and error handling to avoid race conditions and deadlocks. 16 | 17 | To use the Parallel class, you need to add a using directive for the System.Threading.Tasks namespace at the top of your code file. You also need to pass a delegate (such as an anonymous method or a lambda expression) that represents the work to be done in parallel. Optionally, you can also pass an instance of the ParallelOptions class that specifies some options for parallel execution, such as cancellation tokens or maximum degree of parallelism. 18 | 19 | 20 | I have tried to just make these things a little bit more clear by some examples. Beside that, you can follow this chain of articles about Parallel class in .NET 21 | 22 | https://dev.to/alikolahdoozan/parallel-class-in-net-part-1-2hc7 23 | --------------------------------------------------------------------------------