c# geting value from string from end despite the length

What do you mean, won't work?
If the string is 10 chars long then Length is 10, if 20 then Length is 20, if 12345 then length is 12345.

"1119991234123"; = 13 in length    

(thestring - 6, 1)

= getting 2


if

"11199912341234"; = 14 in length

(thestring - 6, 1)

= getting 3

Yes, so what is the problem?  The VB right function would behave the same way and you say you want something from the end of the string.

Do you want get 6th from right of string?

char[] getRight(string str,int postfromright)
{
   if (postfromright>=str.Length) return 0;
   else return str[str.Length-postfromright-1];
}
string getRight(string str,int postfromright,int count)
{
   if (postfromright>=str.Length+count) return "";
   else return str.SubString([str.Length-Post-1],count);
}

Select allOpen in new window

guess this works fine for me

String s, t;
s = "111999123412301";
t = Strings.Right(s, 3);
char c = t.FirstOrDefault();
Response.Write(c);

Select allOpen in new window

Odd.
In your 'self posted answer' you specify the final 3 chars of the string, in the question you were posting code that retrieved a string of length 1 part way in from the end and stating it didn't work because the string was growing in length.
If you always wanted the final 3 characters as a string then I would have told you how to do it in my very first post.
In future it will help you if you ask a question about what you want.

(If you don't understand a function - eg. substring - it is always useful to look it up in the help files, then you may not need to waste time even asking a question, it is clear there that the second parameter is the length of the string to return AND not supplying one will return everything until the end of the string)

@AndyAinscow:

Hmmmm- despite of the fact that his substring() example was not perfectly chosen (although he said that it won't work for him), he explicitly asked if there was a similar function to VB's Strings.Right() in C#. That was completely clear from my view, wasn't it ?

@frankhelk
I'm not criticizing you.  It is just that the substring function will do do everything the Right function will do and more.  No need for any extra imports and quite possibly fewer lines of code as well depending on if there is a requirement for the 'and more'.  The reason that substring didn't work given was that the string was growing.  If substring wouldn't work in that case then Right should have even more problems.

@AndyAinscow:

I didn't take that as critic ... no need to apologize.

For clarification (no critc, too): I recommended that solution because it has some advantages:


And the only extra code needed is the "using ..." directive at the beginning of the code. Not much of a sacrifice in my opinion, measured by at least the gain in readability. And when using Visual Studio, Strings.Right() is part of the package ... isn't it ?