How can I split the last instance of a character in a C# string?

Question

I have a string that looks like this

/root/test/test2/tesstset-werew-1

And I want to parse the word after the last / . So in this example, I want to grab the word tesstset-werew-1 . What is the best way of doing this in C#? Should I split the string into an array or is there some built in function for this?

Answer 1

The Split() method

string mystring = "/root/test/test2/tesstset-werew-1";

var mysplitstring = mystring.split("/");

string lastword = mysplitstring[mysplitstring.length - 1];

Answer 2

如果这是路径，在您的示例中似乎是这种情况，则可以使用Path.GetFileName() ：

string fileName = Path.GetFileName("/root/test/test2/tesstset-werew-1");

Answer 3

Splitting into an array is probably the easiest way to do it. The other would be regex

something like this would work:

string[] segments = yourString.Split('/');
try
{
  lastSegment = segments[segments.length - 1];
}
catch (IndexOutOfRangeException)
{
    Console.WriteLine("Your original string does not have slashes");
}

You would want to put a check that segments[] has elements before the second statement.

Answer 4

yourString.Substring(yourString.LastIndexOf('/') + 1);

Answer 5

您可以按相反的顺序运行for循环，直到/符号为止。