C# 找不到路径的一部分？
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Could not find a part of the path?
提问by Banshee
I have the following code :
我有以下代码：
fileinfo = new FileInfo(filePathAndName);
if (!fileinfo.Exists)
{
using (xmlWriter = new XmlTextWriter(filePathAndName, System.Text.Encoding.UTF8))
{
xmlWriter.Formatting = Formatting.Indented;
xmlWriter.WriteStartDocument();
xmlWriter.WriteStartElement("root");
xmlWriter.WriteStartElement("objects");
xmlWriter.WriteEndElement();
xmlWriter.WriteEndElement();
xmlWriter.WriteEndDocument();
xmlWriter.Close();
}
}
The filePathAndName will be C:/MyApp%205/Produkter/MyApp%20Utveckling/Host/Orbit.Host.Dev/bin/ExceptionLog.xml.
filePathAndName 将是 C:/MyApp%205/Produkter/MyApp%20Utveckling/Host/Orbit.Host.Dev/bin/ExceptionLog.xml.
The folder does exists but the file does not. XmlTextWriter should in this case create the file but instead it throws Could not find part of the path.
文件夹确实存在，但文件不存在。在这种情况下，XmlTextWriter 应该创建文件，但它会抛出Could not find part of the path.
It's probably something very obvious I have forgotten here, please help.
这可能是我在这里忘记的非常明显的事情，请帮忙。
Edit : This is how the path really looks like :
编辑：这是路径真正的样子：
C:\MyApp 5\Produkter\MyApp Utveckling\Host\Orbit.Host.Dev\Bin
And this is how the URL that is used in the code is generated :
这就是代码中使用的 URL 的生成方式：
(new System.Uri(System.IO.Path.GetDirectoryName(Assembly.GetExecutingAssembly().CodeBase) + "\ExceptionLog.xml")).AbsolutePath
采纳答案by Sergey Brunov
I've tried the code, ArgumentExceptionis thrown by XmlTextWriterconstructor with this message:
我已经尝试过代码，ArgumentException是由XmlTextWriter构造函数抛出的，带有以下消息：
the URI formats are not supported.
不支持 URI 格式。
Consider the following code:
考虑以下代码：
// Get the path to assembly directory.
// There is a lot of alternatives: http://stackoverflow.com/questions/52797/
var assemblyPath = new Uri(Assembly.GetExecutingAssembly().CodeBase).LocalPath;
var directoryPath = Path.GetDirectoryName(assemblyPath);
// Path to XML-file.
var filePath = Path.Combine(directoryPath, "ExceptionLog.xml");
using (var xmlTextWriter = new XmlTextWriter(filePath, Encoding.UTF8))
{
...
}
回答by Naga Sandeep
Try this -- add @ before the filePathAndName
试试这个——在 filePathAndName 之前添加 @
string filePathAndName = @"C:\MyApp 5\Produkter\MyApp Utveckling\Host\Orbit.Host.Dev\Bin\text.xml";
FileInfo fileinfo = new FileInfo(filePathAndName);
if (!fileinfo.Exists)
{
using (XmlTextWriter xmlWriter = new XmlTextWriter(filePathAndName, System.Text.Encoding.UTF8))
{
xmlWriter.Formatting = Formatting.Indented;
xmlWriter.WriteStartDocument();
xmlWriter.WriteStartElement("root");
xmlWriter.WriteStartElement("objects");
xmlWriter.WriteEndElement();
xmlWriter.WriteEndElement();
xmlWriter.WriteEndDocument();
xmlWriter.Close();
}
}
回答by Oliver
Instead of using Uri.AbsolutePathyou should take Path.Combine()
而不是使用Uri.AbsolutePath你应该采取Path.Combine()
var filepath = @"C:\MyApp 5\Produkter\MyApp Utveckling\Host\Orbit.Host.Dev\Bin"
var filename = Path.Combine(filepath, "ExceptionLog.xml");
var fileInfo = new FileInfo(filename);
if(!fileInfo.Exists)
{
//ToDo: call xml writer...
}
回答by RogerN
Use Assembly.Location and Path.Combine to form your fileNameAndPath variable:
使用 Assembly.Location 和 Path.Combine 来形成你的 fileNameAndPath 变量：
var folder = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
var filePathAndName = Path.Combine(folder, "ExceptionLog.xml");
回答by MacGyver
If you are interacting with a path on a network (aka UNC path), you have to use Server.MapPath to turn a UNC path or virtual path into a physical path that .NET can understand. So anytime you're opening files, creating, updating and deleting files, opening directories and deleting directories on a network path, use Server.MapPath.
如果您正在与网络上的路径（又名 UNC 路径）交互，则必须使用 Server.MapPath 将 UNC 路径或虚拟路径转换为 .NET 可以理解的物理路径。因此，无论何时打开文件、创建、更新和删除文件、打开目录和删除网络路径上的目录，都可以使用Server.MapPath.
Example:
例子：
System.IO.Directory.CreateDirectory(Server.MapPath("\server\path"));
