using System;
using System.IO;
using System.Text;
public class Util
{
public static string CreateRelativePath(string targetFile, string path)
{
if ((File.GetAttributes(path) & FileAttributes.Directory) != FileAttributes.Directory)
{
path = Path.GetDirectoryName(path);
}
string[] absDirs = path.Split('\\');
string[] relDirs = targetFile.Split('\\');
int length = absDirs.Length < relDirs.Length ? absDirs.Length :
relDirs.Length;
int lastCommonRoot = -1;
int index;
for (index = 0; index < length; index++)
{
if (absDirs[index] == relDirs[index]) lastCommonRoot = index;
else break;
}
if (lastCommonRoot == -1)
{
return Path.GetFullPath(targetFile);
}
StringBuilder relativePath = new StringBuilder();
for (index = lastCommonRoot + 1; index < absDirs.Length; index++)
{
if (absDirs[index].Length > 0) relativePath.Append("..\\");
}
for (index = lastCommonRoot + 1; index < relDirs.Length - 1; index++)
{
relativePath.Append(relDirs[index] + "\\");
}
relativePath.Append(relDirs[relDirs.Length - 1]);
return relativePath.ToString();
}
}