// Best way to convert absolute path to relative
// Author: https://stackoverflow.com/a/485516
// For example, input:
// ["C:\Windows\System32\", "C:\Windows\System32\drivers\etc\hosts"]
// output: ".\drivers\etc\hosts"
public static string GetRelativePath(string fromPath, string toPath)
{
int fromAttr = RelativePath.GetPathAttribute(fromPath);
int toAttr = RelativePath.GetPathAttribute(toPath);
StringBuilder path = new StringBuilder(260); // MAX_PATH
if (RelativePath.PathRelativePathTo(
path,
fromPath,
fromAttr,
toPath,
toAttr) == 0)
{
throw new ArgumentException("Paths must have a common prefix");
}
var output = path.ToString();
output = output.Substring(2, output.Length - 2);
return(output);
}