如何使的System.Uri不反向转义％2F（斜杠）的路径？ [英] How to make System.Uri not to unescape %2f (slash) in path?

问题描述

的System.Uri构造坚持进行反向转义％2F序列向前的斜线，当它看到他们在URL的路径部分。我怎么能避免behaiviour？

System.Uri constructor insists on unescaping %2f sequences as foward slashes, when it sees them in path portion of URL. How could I avoid that behaiviour?

我见过的<一个href="http://connect.microsoft.com/VisualStudio/feedback/details/94109/system-uri-constructor-evaluates-escaped-slashes-and-removes-double-slashes"相对=nofollow>连接票这个thig的，但解决办法是行不通的.NET 4，据就是我的理解。

I've seen Connect ticket on this thig, but workaround is not working for .net 4 as far is I understand.

推荐答案

它在内部保持了原始的字符串，例如，下面的code：

It keeps the original string internally, for example, the following code:

    Uri u = new Uri("http://www.example.com/path?var=value%2fvalue");
    Console.WriteLine(u.OriginalString);

显示

http://www.example.com/path?var=value%2fvalue

修改：我有更新的<一个发现了code href="http://connect.microsoft.com/VisualStudio/feedback/details/94109/system-uri-constructor-evaluates-escaped-slashes-and-removes-double-slashes"相对=nofollow>连接链路解决方法获得最新的.NET版本。在这里，它是：

EDIT: I have update the code found in the Connect Link Workaround for recent .NET versions. Here it is:

// System.UriSyntaxFlags is internal, so let's duplicate the flag privately
private const int UnEscapeDotsAndSlashes = 0x2000000;
private const int SimpleUserSyntax = 0x20000;

public static void LeaveDotsAndSlashesEscaped(Uri uri)
{
    if (uri == null)
        throw new ArgumentNullException("uri");

    FieldInfo fieldInfo = uri.GetType().GetField("m_Syntax", BindingFlags.Instance | BindingFlags.NonPublic);
    if (fieldInfo == null)
        throw new MissingFieldException("'m_Syntax' field not found");

    object uriParser = fieldInfo.GetValue(uri);
    fieldInfo = typeof(UriParser).GetField("m_Flags", BindingFlags.Instance | BindingFlags.NonPublic);
    if (fieldInfo == null)
        throw new MissingFieldException("'m_Flags' field not found");

    object uriSyntaxFlags = fieldInfo.GetValue(uriParser);

    // Clear the flag that we don't want
    uriSyntaxFlags = (int)uriSyntaxFlags & ~UnEscapeDotsAndSlashes;
    uriSyntaxFlags = (int)uriSyntaxFlags & ~SimpleUserSyntax;
    fieldInfo.SetValue(uriParser, uriSyntaxFlags);
}

当然，这是一个黑客，所以你应该在你自己的风险使用它： - ）

Of course, it's a hack, so you should use it at your own risks :-)

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