Das ist mein Ansatz, und ich werde ihn auch für mich selbst anwenden:
public static string UrlCombine(string part1, string part2)
{
string newPart1 = string.Empty;
string newPart2 = string.Empty;
string seperator = "/";
// If either part1 or part 2 is empty,
// we don't need to combine with seperator
if (string.IsNullOrEmpty(part1) || string.IsNullOrEmpty(part2))
{
seperator = string.Empty;
}
// If part1 is not empty,
// remove '/' at last
if (!string.IsNullOrEmpty(part1))
{
newPart1 = part1.TrimEnd('/');
}
// If part2 is not empty,
// remove '/' at first
if (!string.IsNullOrEmpty(part2))
{
newPart2 = part2.TrimStart('/');
}
// Now finally combine
return string.Format("{0}{1}{2}", newPart1, seperator, newPart2);
}