Comment puis-je convertir un foreach Parallèle.ForEach?

Que vous pouvez faire:

Parallel.ForEach(delegates, handler => 
{ 
//your stuff 
});

Considérons l'exemple suivant

List<string> list = new List<string>()
{
    "ABC",
    "DEF", 
    "EFG"
};

Parallel.ForEach(list, str =>
{
    Console.WriteLine(str);
});

Vous pouvez également voir: Comment faire: Écrire un Simple Parallèle.Boucle ForEach

OriginalL'auteur Habib

Exemple Simple de MSDN.

  //A simple source for demonstration purposes. Modify this path as necessary. 
string[] files = System.IO.Directory.GetFiles(@"C:\Users\Public\Pictures\Sample Pictures", "*.jpg");
string newDir = @"C:\Users\Public\Pictures\Sample Pictures\Modified";
System.IO.Directory.CreateDirectory(newDir);

// Method signature: Parallel.ForEach(IEnumerable<TSource> source, Action<TSource> body)
Parallel.ForEach(files, currentFile =>
{
    //The more computational work you do here, the greater  
    //the speedup compared to a sequential foreach loop. 
    string filename = System.IO.Path.GetFileName(currentFile);
    System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(currentFile);

    bitmap.RotateFlip(System.Drawing.RotateFlipType.Rotate180FlipNone);
    bitmap.Save(System.IO.Path.Combine(newDir, filename));

    //Peek behind the scenes to see how work is parallelized. 
    //But be aware: Thread contention for the Console slows down parallel loops!!!
    Console.WriteLine("Processing {0} on thread {1}", filename, Thread.CurrentThread.ManagedThreadId);

    } //close lambda expression
); //close method invocation 

OriginalL'auteur Jonas W