remove last word in label split by \
Ok i have a string where i want to remove the last word split by \
for example:
string name ="kak\kdk\dd\ddew\cxz\"
now i want to remove the last word so that i get a new value for name as
name= &quo开发者_如何学Pythont;kak\kdk\dd\ddew\"
is there an easy way to do this
thanks
How do you get this string in the first place? I assume you know that '' is the escape character in C#. However, you should get far by using
name = name.TrimEnd('\\').Remove(name.LastIndexOf('\\') + 1);
string result = string.Join("\\",
"kak\\kdk\\dd\\ddew\\cxz\\"
.Split(new[] { '\\' }, StringSplitOptions.RemoveEmptyEntries)
.Reverse()
.Skip(1)
.Reverse()
.ToArray()) + "\\";
Here's a non-regex manner of doing it.
string newstring = name.SubString(0, name.SubString(0, name.length - 1).LastIndexOf('\\'));
This regex replacement should do the trick:
name = Regex.Replace(name, @"\\[a-z]*\\$", "\\");
Try this:
const string separator = "\\";
string name = @"kak\kdk\dd\ddew\cxz\";
string[] names = name.Split(separator.ToCharArray(),
StringSplitOptions.RemoveEmptyEntries);
string result = String.Join(separator, names, 0, names.Length - 1) + separator;
EDIT:I just noticed that name.Substring(0,x)
is equivalent to name.Remove(x)
, so I've changed my answer to reflect that.
In a single line:
name = name = name.Remove(name.Remove(name.Length - 1).LastIndexOf('\\') + 1);
If you want to understand it, here's how it might be written out (overly) verbosely:
string nameWithoutLastSlash = name.Remove(name.Length - 1);
int positionOfNewLastSlash = nameWithoutLastSlash.LastIndexOf('\\') + 1;
string desiredSubstringOfName = name.Remove(positionOfNewLastSlash);
name = desiredSubstringOfName;
My Solution
public static string RemoveLastWords(this string input, int numberOfLastWordsToBeRemoved, char delimitter)
{
string[] words = input.Split(new[] { delimitter });
words = words.Reverse().ToArray();
words = words.Skip(numberOfLastWordsToBeRemoved).ToArray();
words = words.Reverse().ToArray();
string output = String.Join(delimitter.ToString(), words);
return output;
}
Function call
RemoveLastWords("kak\kdk\dd\ddew\cxz\", 1, '\')
string name ="kak\kdk\dd\ddew\cxz\"
string newstr = name.TrimEnd(@"\")
if you working with paths:
string name = @"kak\kdk\dd\ddew\cxz\";
Path.GetDirectoryName(name.TrimEnd('\\'));
//ouput: kak\kdk\dd\ddew
string[] temp = name.Split('\\');
string last = "\\" + temp.Last();
string target = name.Replace(last, "");
For Linq-lovers: With later C# versions you can use SkipLast together with Split and string.Join:
var input = @"kak\kdk\dd\ddew\cxz\";
string result = string.Join( @"\", input
.Split( @"\", StringSplitOptions.RemoveEmptyEntries )
.SkipLast( 1 ))
+ @"\";
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