.net - Running multiple Task -

i'm trying execute multiple tasks @ same time

    private static void main(string[] args)     {         while (true) {             console.foregroundcolor = consolecolor.white;             console.write("enter number of cart: ");             var numofcarts = convert.toint32(console.readline());              console.write("enter number of items: ");             var numofitems = convert.toint32(console.readline());             runtasks(numofcarts, numofitems).wait();         }     }      public static async task runtasks(int numofcarts, int numofitems)     {         (var = 0; < numofcarts; i++)             await task.run(() =>             {                 var color = (consolecolor) new random().next(0, 15);                 (var q = 0; q < numofitems; q++) {                     console.foregroundcolor = color;                     console.writeline("cart {0} : {1}", i, q);                 }             });     } 

is correct implementation? foregroundcolor changes. console color different each cart.

do not mix task.wait() calls , async / await. in case, may lead deadlock when main thread waits runtasks execute while runtasks waits main thread start continuation.

in case, use task.whenall:

private static void main(string[] args) {     while (true) {         console.foregroundcolor = consolecolor.white;         console.write("enter number of cart: ");         var numofcarts = convert.toint32(console.readline());          console.write("enter number of items: ");         var numofitems = convert.toint32(console.readline());         runtasks(numofcarts, numofitems).wait();     } }  public static task runtasks(int numofcarts, int numofitems) {     task[] tasks = new task[numofcarts];     (var = 0; < numofcarts; i++)     {         tasks[i] = task.run(() =>         {             var color = (consolecolor) new random().next(0, 15);             (var q = 0; q < numofitems; q++) {                 console.foregroundcolor = color;                 console.writeline("cart {0} : {1}", i, q);             }         });     }      return task.whenall(tasks); }     

• runtasks starts many tasks , returns task complete when subtasks complete.
• main start runtasks , block main thread until runtasks finishes.

at same time, can make await task.whenall in runtasks , await runtasks() in main, doesn't make sense - main thread busy , infinitely 1 job (which runtasks).