本文整理匯總了C#中System.AggregateException.Flatten方法的典型用法代碼示例。如果您正苦於以下問題：C# AggregateException.Flatten方法的具體用法？C# AggregateException.Flatten怎麽用？C# AggregateException.Flatten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.AggregateException的用法示例。
在下文中一共展示了AggregateException.Flatten方法的2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.Threading.Tasks;
public class Example
{
public static void Main()
{
var task1 = Task.Factory.StartNew(() => {
var child1 = Task.Factory.StartNew(() => {
var child2 = Task.Factory.StartNew(() => {
// This exception is nested inside three AggregateExceptions.
throw new CustomException("Attached child2 faulted.");
}, TaskCreationOptions.AttachedToParent);
// This exception is nested inside two AggregateExceptions.
throw new CustomException("Attached child1 faulted.");
}, TaskCreationOptions.AttachedToParent);
});
try {
task1.Wait();
}
catch (AggregateException ae) {
foreach (var e in ae.Flatten().InnerExceptions) {
if (e is CustomException) {
Console.WriteLine(e.Message);
}
else {
throw;
}
}
}
}
}
public class CustomException : Exception
{
public CustomException(String message) : base(message)
{}
}輸出：
Attached child1 faulted. Attached child2 faulted.
示例2: Main
//引入命名空間
using System;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
public class Example
{
public static void Main()
{
try {
ExecuteTasks();
}
catch (AggregateException ae) {
foreach (var e in ae.InnerExceptions) {
Console.WriteLine("{0}:\n {1}", e.GetType().Name, e.Message);
}
}
}
static void ExecuteTasks()
{
// Assume this is a user-entered String.
String path = @"C:\";
List<Task> tasks = new List<Task>();
tasks.Add(Task.Run(() => {
// This should throw an UnauthorizedAccessException.
return Directory.GetFiles(path, "*.txt",
SearchOption.AllDirectories);
}));
tasks.Add(Task.Run(() => {
if (path == @"C:\")
throw new ArgumentException("The system root is not a valid path.");
return new String[] { ".txt", ".dll", ".exe", ".bin", ".dat" };
}));
tasks.Add(Task.Run(() => {
throw new NotImplementedException("This operation has not been implemented.");
}));
try {
Task.WaitAll(tasks.ToArray());
}
catch (AggregateException ae) {
throw ae.Flatten();
}
}
}輸出：
UnauthorizedAccessException: Access to the path 'C:\Documents and Settings' is denied. ArgumentException: The system root is not a valid path. NotImplementedException: This operation has not been implemented.