Erase stuff from string

Question

Hello I have this code: string s; s = 12345 ; How can i delete that space from my string? I want to obtain true from this if: if(s == 12345) MessageBox.Show(It's correct!); else MessageBox.Show(Wrong);

Sascha B · Answer

Or just replace the blanks with nothing :D String.Replace(' '''); Then every blank is gone forever!

Vulpes · Answer

All the methods in the String class which appear to modify strings - even Trim() and TrimEnd() - create new ones. This is simply because strings are immutable. However this isn't normally a problem for the garbage collector as I pointed out in another recent thread ( http://www.c-sharpcorner.com/Forums/Thread/113499/C-Sharp-string-split.aspx ). If you need a 'truly' mutable string then use StringBuilder instead which is more efficient when several mutations or concatenations are needed. Incidentally you can mutate strings using pointers and unsafe code though doing so isn't recommended as you may corrupt the string intern pool!

Suthish Nair · Answer

We must use String.Replace when there is an urgent need only. The biggest problem is that it creates more string copies each time it is called. This can often lead to measurable performance problems in large projects. Microsoft notes that This method does not modify the value of the current instance. Instead it returns a new string in which all occurrences of oldValue are replaced by newValue. Yo must use as below instead of Replace... if( s.Trim() == 12345)

Sam Hobbs · Answer

Why does Trim and TrimEnd not work? Is it because you need to remove all spaces from the string not just the spaces at the end? Note that you example does not show that and your question does not say that. So just remember that you will usually get a better answer faster if you describe the problem clearly.

Raul Junc · Answer

Ty :D This is what i was looking for :P

Mahesh Chand · Answer

As Sam suggested Trim and TrimEnd will do the trick. Here is the code snippet. http://www.c-sharpcorner.com/uploadfile/mahesh/2886/

Sam Hobbs · Answer

Did you look at the documentation of the String class? Does TrimEnd sound relevant? If not then please clarify what you are asking.