C# 如何在 Windows 应用程序中将相对路径转换为绝对路径？
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原文地址: http://stackoverflow.com/questions/1399008/
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How to convert a relative path to an absolute path in a Windows application?
提问by Amit Dhall
How do I convert a relative path to an absolute path in a Windows application?
如何在 Windows 应用程序中将相对路径转换为绝对路径？
I know we can use server.MapPath() in ASP.NET. But what can we do in a Windows application?
我知道我们可以在 ASP.NET 中使用 server.MapPath()。但是我们可以在 Windows 应用程序中做什么？
I mean, if there is a .NET built-in function that can handle that...
我的意思是，如果有一个 .NET 内置函数可以处理那个......
采纳答案by Jon Skeet
Have you tried:
你有没有尝试过：
string absolute = Path.GetFullPath(relative);
? Note that that will use the current working directory of the process, not the directory containing the executable. If that doesn't help, please clarify your question.
? 请注意，这将使用进程的当前工作目录，而不是包含可执行文件的目录。如果这没有帮助，请澄清您的问题。
回答by Tobias Hertkorn
If you want to get the path relative to your .exe then use
如果要获取相对于 .exe 的路径，请使用
string absolute = Path.Combine(Application.ExecutablePath, relative);
回答by Nyerguds
This one works for paths on different drives, for drive-relative paths and for actual relative paths. Heck, it even works if the basePathisn't actually absolute; it always uses the current working directory as final fallback.
这适用于不同驱动器上的路径、驱动器相对路径和实际相对路径。哎呀，如果basePath实际上不是绝对的，它甚至可以工作；它总是使用当前工作目录作为最后的回退。
public static String GetAbsolutePath(String path)
{
return GetAbsolutePath(null, path);
}
public static String GetAbsolutePath(String basePath, String path)
{
if (path == null)
return null;
if (basePath == null)
basePath = Path.GetFullPath("."); // quick way of getting current working directory
else
basePath = GetAbsolutePath(null, basePath); // to be REALLY sure ;)
String finalPath;
// specific for windows paths starting on \ - they need the drive added to them.
// I constructed this piece like this for possible Mono support.
if (!Path.IsPathRooted(path) || "\".Equals(Path.GetPathRoot(path)))
{
if (path.StartsWith(Path.DirectorySeparatorChar.ToString()))
finalPath = Path.Combine(Path.GetPathRoot(basePath), path.TrimStart(Path.DirectorySeparatorChar));
else
finalPath = Path.Combine(basePath, path);
}
else
finalPath = path;
// resolves any internal "..\" to get the true full path.
return Path.GetFullPath(finalPath);
}
回答by vesi
It's a bit older topic, but it might be useful for someone. I have solved a similar problem, but in my case, the path was not at the beginning of the text.
这是一个有点老的话题，但它可能对某人有用。我已经解决了类似的问题，但就我而言，路径不在文本的开头。
So here is my solution:
所以这是我的解决方案：
public static class StringExtension
{
private const string parentSymbol = "..\";
private const string absoluteSymbol = ".\";
public static String AbsolutePath(this string relativePath)
{
string replacePath = AppDomain.CurrentDomain.BaseDirectory;
int parentStart = relativePath.IndexOf(parentSymbol);
int absoluteStart = relativePath.IndexOf(absoluteSymbol);
if (parentStart >= 0)
{
int parentLength = 0;
while (relativePath.Substring(parentStart + parentLength).Contains(parentSymbol))
{
replacePath = new DirectoryInfo(replacePath).Parent.FullName;
parentLength = parentLength + parentSymbol.Length;
};
relativePath = relativePath.Replace(relativePath.Substring(parentStart, parentLength), string.Format("{0}\", replacePath));
}
else if (absoluteStart >= 0)
{
relativePath = relativePath.Replace(".\", replacePath);
}
return relativePath;
}
}
Example:
例子：
Data Source=.\Data\Data.sdf;Persist Security Info=False;
Data Source=..\..\bin\Debug\Data\Data.sdf;Persist Security Info=False;
