本文整理匯總了C#中System.Threading.Tasks.TaskFactory.StartNew方法的典型用法代碼示例。如果您正苦於以下問題:C# TaskFactory.StartNew方法的具體用法?C# TaskFactory.StartNew怎麽用?C# TaskFactory.StartNew使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Threading.Tasks.TaskFactory
的用法示例。
在下文中一共展示了TaskFactory.StartNew方法的6個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: Main
//引入命名空間
using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
public class Example
{
public static void Main()
{
CancellationTokenSource cts = new CancellationTokenSource();
CancellationToken token = cts.Token;
var tasks = new List<Task>();
Random rnd = new Random();
Object lockObj = new Object();
String[] words6 = { "reason", "editor", "rioter", "rental",
"senior", "regain", "ordain", "rained" };
foreach (var word6 in words6)
tasks.Add(Task.Factory.StartNew( (word) => { Char[] chars = word.ToString().ToCharArray();
double[] order = new double[chars.Length];
token.ThrowIfCancellationRequested();
bool wasZero = false;
lock (lockObj) {
for (int ctr = 0; ctr < order.Length; ctr++) {
order[ctr] = rnd.NextDouble();
if (order[ctr] == 0) {
if (! wasZero) {
wasZero = true;
}
else {
cts.Cancel();
}
}
}
}
token.ThrowIfCancellationRequested();
Array.Sort(order, chars);
Console.WriteLine("{0} --> {1}", word,
new String(chars));
}, word6, token));
try {
Task.WaitAll(tasks.ToArray());
}
catch (AggregateException e) {
foreach (var ie in e.InnerExceptions) {
if (ie is OperationCanceledException) {
Console.WriteLine("The word scrambling operation has been cancelled.");
break;
}
else {
Console.WriteLine(ie.GetType().Name + ": " + ie.Message);
}
}
}
finally {
cts.Dispose();
}
}
}
輸出:
regain --> irnaeg ordain --> rioadn reason --> soearn rained --> rinade rioter --> itrore senior --> norise rental --> atnerl editor --> oteird
示例2: Main
//引入命名空間
using System;
using System.Collections.Generic;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
public class Example
{
public static void Main()
{
var tokenSource = new CancellationTokenSource();
var token = tokenSource.Token;
var files = new List<Tuple<string, string, long, DateTime>>();
var t = Task.Factory.StartNew( () => { string dir = "C:\\Windows\\System32\\";
object obj = new Object();
if (Directory.Exists(dir)) {
Parallel.ForEach(Directory.GetFiles(dir),
f => {
if (token.IsCancellationRequested)
token.ThrowIfCancellationRequested();
var fi = new FileInfo(f);
lock(obj) {
files.Add(Tuple.Create(fi.Name, fi.DirectoryName, fi.Length, fi.LastWriteTimeUtc));
}
});
}
}
, token);
tokenSource.Cancel();
try {
t.Wait();
Console.WriteLine("Retrieved information for {0} files.", files.Count);
}
catch (AggregateException e) {
Console.WriteLine("Exception messages:");
foreach (var ie in e.InnerExceptions)
Console.WriteLine(" {0}: {1}", ie.GetType().Name, ie.Message);
Console.WriteLine("\nTask status: {0}", t.Status);
}
finally {
tokenSource.Dispose();
}
}
}
輸出:
Exception messages: TaskCanceledException: A task was canceled. Task status: Canceled
示例3: Main
//引入命名空間
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
public class Example
{
public static void Main()
{
Random rnd = new Random();
List<Task> tasks = new List<Task>();
// Execute the task 10 times.
for (int ctr = 1; ctr <= 9; ctr++) {
tasks.Add(Task.Factory.StartNew( () => {
int utf32 = 0;
lock(rnd) {
// Get UTF32 value.
utf32 = rnd.Next(0, 0xE01F0);
}
// Convert it to a UTF16-encoded character.
string utf16 = Char.ConvertFromUtf32(utf32);
// Display information about the character.
Console.WriteLine("0x{0:X8} --> '{1,2}' ({2})",
utf32, utf16, ShowHex(utf16));
}));
}
Task.WaitAll(tasks.ToArray());
}
private static string ShowHex(string value)
{
string hexString = null;
// Handle only non-control characters.
if (! Char.IsControl(value, 0)) {
foreach (var ch in value)
hexString += String.Format("0x{0} ", Convert.ToUInt16(ch));
}
return hexString.Trim();
}
}
輸出:
0x00097103 --> '' (0x55836 0x56579) 0x000A98A1 --> '' (0x55910 0x56481) 0x00050002 --> '' (0x55552 0x56322) 0x0000FEF1 --> 'ﻱ' (0x65265) 0x0008BC0A --> '' (0x55791 0x56330) 0x000860EA --> '' (0x55768 0x56554) 0x0009AC5A --> '' (0x55851 0x56410) 0x00053320 --> '' (0x55564 0x57120) 0x000874EF --> '' (0x55773 0x56559)
示例4: Main
//引入命名空間
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
public class Example
{
public static void Main()
{
var tasks = new List<Task>();
Random rnd = new Random();
Object lockObj = new Object();
String[] words6 = { "reason", "editor", "rioter", "rental",
"senior", "regain", "ordain", "rained" };
foreach (var word6 in words6)
tasks.Add(Task.Factory.StartNew( (word) => { Char[] chars = word.ToString().ToCharArray();
double[] order = new double[chars.Length];
lock (lockObj) {
for (int ctr = 0; ctr < order.Length; ctr++)
order[ctr] = rnd.NextDouble();
}
Array.Sort(order, chars);
Console.WriteLine("{0} --> {1}", word,
new String(chars));
}, word6));
Task.WaitAll(tasks.ToArray());
}
}
輸出:
regain --> irnaeg ordain --> rioadn reason --> soearn rained --> rinade rioter --> itrore senior --> norise rental --> atnerl editor --> oteird
示例5: Main
//引入命名空間
using System;
using System.Threading.Tasks;
public class Example
{
public static void Main()
{
Random rnd = new Random();
Task<int>[] tasks = new Task<int>[2];
Object obj = new Object();
while (true) {
for (int ctr = 0; ctr <= 1; ctr++)
tasks[ctr] = Task.Factory.StartNew(() => { int i = 0;
lock(obj) {
i = rnd.Next(101);
}
return i; });
Task.WaitAll(tasks);
int n1 = tasks[0].Result;
int n2 = tasks[1].Result;
int result = n1 + n2;
bool validInput = false;
while (! validInput) {
ShowMessage(n1, n2);
string userInput = Console.ReadLine();
// Process user input.
if (userInput.Trim().ToUpper() == "X") return;
int answer;
validInput = Int32.TryParse(userInput, out answer);
if (! validInput)
Console.WriteLine("Invalid input. Try again, but enter only numbers. ");
else if (answer == result)
Console.WriteLine("Correct!");
else
Console.WriteLine("Incorrect. The correct answer is {0}.", result);
}
}
}
private static void ShowMessage(int n1, int n2)
{
Console.WriteLine("\nEnter 'x' to exit...");
Console.Write("{0} + {1} = ", n1, n2);
}
}
輸出:
Enter 'x' to exit... 15 + 11 = 26 Correct! Enter 'x' to exit... 75 + 33 = adc Invalid input. Try again, but enter only numbers. Enter 'x' to exit... 75 + 33 = 108 Correct! Enter 'x' to exit... 67 + 55 = 133 Incorrect. The correct answer is 122. Enter 'x' to exit... 92 + 51 = 133 Incorrect. The correct answer is 143. Enter 'x' to exit... 81 + 65 = x
示例6: Main
//引入命名空間
using System;
using System.Collections.Generic;
using System.Numerics;
using System.Threading;
using System.Threading.Tasks;
public class Example
{
public static void Main()
{
var rnd = new Random();
var tasks = new List<Task<BigInteger[]>>();
var source = new CancellationTokenSource();
var token = source.Token;
for (int ctr = 0; ctr <= 1; ctr++) {
int start = ctr;
tasks.Add(Task.Run( () => { BigInteger[] sequence = new BigInteger[100];
sequence[0] = start;
sequence[1] = 1;
for (int index = 2; index <= sequence.GetUpperBound(0); index++) {
token.ThrowIfCancellationRequested();
sequence[index] = sequence[index - 1] + sequence[index - 2];
}
return sequence;
}, token));
}
if (rnd.Next(0, 2) == 1)
source.Cancel();
try {
Task.WaitAll(tasks.ToArray());
foreach (var t in tasks)
Console.WriteLine("{0}, {1}...{2:N0}", t.Result[0], t.Result[1],
t.Result[99]);
}
catch (AggregateException e) {
foreach (var ex in e.InnerExceptions)
Console.WriteLine("{0}: {1}", ex.GetType().Name, ex.Message);
}
}
}
輸出:
0, 1...218,922,995,834,555,169,026 1, 1...354,224,848,179,261,915,075 or the following output: TaskCanceledException: A task was canceled. TaskCanceledException: A task was canceled.