How to Remove Last digit of String in .Net?

I want to eliminate B if i scan Serial number bar code: 21524116476CA2006765B

开发者_StackOverflowOutput: 21524116476CA2006765

string foo = "21524116476CA2006765B";
string bar = foo.Substring(0, Math.Max(foo.Length - 1, 0));

If you can't be certain that the input barcode will always end with a B, do something like this:

char[] barcodeEnd = { 'B' };

string input = "21524116476CA2006765B";
string output = input.TrimEnd(barcodeEnd);

PUt the first line somewhere it'll only get run once, so you aren't constantly creating new char[] arrays. You can add more characters to the array if you're looking for other specific characters.

string s = "21524116476CA2006765B";
string b = s.Substring(0, s.Length - 1);

string value= "21524116476CA2006765B";
string bar = value.Substring(0, 19);

string str = "Your String Whatever it is";
str = str.Substring(0, s.Length - 1);