To remove whitespace characters from the beginning or from the end of a string only, you use the trimStart() or trimEnd() method.
The lstrip() method will remove leading whitespaces, newline and tab characters on a string beginning.
trim() method removes the leading and trailing spaces present in the string.
String.Trim()
returns a string which equals the input string with all white-spaces trimmed from start and end:
" A String ".Trim() -> "A String"
String.TrimStart()
returns a string with white-spaces trimmed from the start:
" A String ".TrimStart() -> "A String "
String.TrimEnd()
returns a string with white-spaces trimmed from the end:
" A String ".TrimEnd() -> " A String"
None of the methods modify the original string object.
(In some implementations at least, if there are no white-spaces to be trimmed, you get back the same string object you started with:
csharp> string a = "a";
csharp> string trimmed = a.Trim();
csharp> (object) a == (object) trimmed;
returns true
I don't know whether this is guaranteed by the language.)
take a look at Trim()
which returns a new string with whitespace removed from the beginning and end of the string it is called on.
string a = " Hello ";
string trimmed = a.Trim();
trimmed
is now "Hello"
use the String.Trim()
function.
string foo = " hello ";
string bar = foo.Trim();
Console.WriteLine(bar); // writes "hello"
Use String.Trim
method.
String.Trim()
removes all whitespace from the beginning and end of a string.
To remove whitespace inside a string, or normalize whitespace, use a Regular Expression.
Trim()
Removes all leading and trailing white-space characters from the current string.
Trim(Char)
Removes all leading and trailing instances of a character from the current string.
Trim(Char[])
Removes all leading and trailing occurrences of a set of characters specified in an array from the current string.
Look at the following example that I quoted from Microsoft's documentation page.
char[] charsToTrim = { '*', ' ', '\''};
string banner = "*** Much Ado About Nothing ***";
string result = banner.Trim(charsToTrim);
Console.WriteLine("Trimmmed\n {0}\nto\n '{1}'", banner, result);
// The example displays the following output:
// Trimmmed
// *** Much Ado About Nothing ***
// to
// 'Much Ado About Nothing'
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