C# 绝对到相对路径
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Absolute to Relative path
提问by Markus
I'm getting a file from an OpenFileDialog which returns a string with the absolute path to the selected file. Now I want that path as a relative path to a given path (in this case the path to my application).
我从 OpenFileDialog 获取一个文件，它返回一个字符串，其中包含所选文件的绝对路径。现在我希望该路径作为给定路径的相对路径（在这种情况下是我的应用程序的路径）。
So let's say I get a path to the file:
c:\myDock\programming\myProject\Properties\AssemblyInfo.cs
所以假设我得到了文件的路径：
c:\myDock\programming\myProject\Properties\AssemblyInfo.cs
and my application is located in
我的应用程序位于
c:\myDock\programming\otherProject\bin\Debug\program.exe
c:\myDock\programming\otherProject\bin\Debug\program.exe
then I want the result:
然后我想要结果：
..\..\..\myProject\Properties\AssemblyInfo.cs
..\..\..\myProject\Properties\AssemblyInfo.cs
采纳答案by Sisyphe
The Uriclass has a MakeRelativeUrimethod that can help.
本Uri类有一个MakeRelativeUri方法，可以帮助。
public static string MakeRelative(string filePath, string referencePath)
{
var fileUri = new Uri(filePath);
var referenceUri = new Uri(referencePath);
return Uri.UnescapeDataString(referenceUri.MakeRelativeUri(fileUri).ToString()).Replace('/', Path.DirectorySeparatorChar);
}
var result = MakeRelative(@"C:\dirName\dirName2\file.txt", @"C:\dirName\");
