问题描述
在.NET 4中,有此目录.EnumerateFiles()方法递归似乎得心应手。
但是,如果发生异常递归中,我怎么能继续/恢复从并继续枚举文件的休息吗?
尝试
{
var中的文件,从文件=在Directory.EnumerateFiles(C:\\
*。*,SearchOption.AllDirectories)
选择新
{
文件=文件
};
Console.WriteLine(files.Count()的ToString());
}
赶上(UnauthorizedAccessException UEX)
{
Console.WriteLine(uEx.Message);
}
赶上(PathTooLongException ptlEx)
{
Console.WriteLine(ptlEx.Message);
}
我没有找到一个解决的办法。通过使用堆栈推枚举结果,可以确实处理的异常。这里有一个code段:(由<一个启发href="http://www.$c$cguru.com/columns/vb/article.php/c17971/Enumerating-Files-and-Directories-in-VB-2010.htm"相对=nofollow>这篇文章)
名单,其中,串&GT;结果=新名单,其中,串&GT;();
字符串开始=C:\\;
results.Add(开始);
堆叠&LT;字符串&GT;堆栈=新的堆栈&LT;字符串&GT;();
做
{
尝试
{
VAR迪尔斯= dir命令在Directory.EnumerateDirectories(
开始,*。*,SearchOption.TopDirectoryOnly)
选择目录;
Array.ForEach(dirs.ToArray(),stack.Push);
开始= stack.Pop();
results.Add(开始);
}
赶上(UnauthorizedAccessException前)
{
Console.WriteLine(ex.Message);
开始= stack.Pop();
results.Add(开始);
}
}而(stack.Count!= 0);
的foreach(在结果字符串的文件)
{
Console.WriteLine(文件);
}
In .NET 4, there's this Directory.EnumerateFiles() method with recursion that seems handy.
However, if an Exception occurs within a recursion, how can I continue/recover from that and continuing enumerate the rest of the files?
try
{
var files = from file in Directory.EnumerateFiles("c:\\",
"*.*", SearchOption.AllDirectories)
select new
{
File = file
};
Console.WriteLine(files.Count().ToString());
}
catch (UnauthorizedAccessException uEx)
{
Console.WriteLine(uEx.Message);
}
catch (PathTooLongException ptlEx)
{
Console.WriteLine(ptlEx.Message);
}
I did found a solution to this. By using a stack to push the enumeration results, one can indeed handle the exceptions. Here's a code snippet: (inspired by this article)
List<string> results = new List<string>();
string start = "c:\\";
results.Add(start);
Stack<string> stack = new Stack<string>();
do
{
try
{
var dirs = from dir in Directory.EnumerateDirectories(
start, "*.*", SearchOption.TopDirectoryOnly)
select dir;
Array.ForEach(dirs.ToArray(), stack.Push);
start = stack.Pop();
results.Add(start);
}
catch (UnauthorizedAccessException ex)
{
Console.WriteLine(ex.Message);
start = stack.Pop();
results.Add(start);
}
} while (stack.Count != 0);
foreach (string file in results)
{
Console.WriteLine(file);
}
这篇关于有没有从Directory.EnumerateFiles的异常中恢复的一种方式?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!