I have value like below
string value = "11,.Ad23";
int n;
bool isNumeric = int.TryParse(value, out n);
I control if string is numeric or not.If string is not numeric and has non numeric i need to get non numeric values as below
Result must be as below
,.Ad
How can i do this in c# ?
If it doesn't matter if the non-digits are consecutive, it's simple:
string nonNumericValue = string.Concat(value.Where(c => !Char.IsDigit(c)));
Online Demo: http://ideone.com/croMht
If you use .NET 3.5. as mentioned in the comment there was no overload of String.Concat (or String.Join as in Dmytris answer) that takes an IEnumerable<string>, so you need to create an array:
string nonNumericValue = string.Concat(value.Where(c => !Char.IsDigit(c)).ToArray());
That takes all non-digits. If you instead want to take the middle part, so skip the digits, then take all until the the next digits:
string nonNumericValue = string.Concat(value.SkipWhile(Char.IsDigit)
.TakeWhile(c => !Char.IsDigit(c)));
Regular expression solution (glue together all non-numeric values):
String source = "11,.Ad23";
String result = String.Join("", Regex
.Matches(source, @"\D{1}")
.OfType<Match>()
.Select(item => item.Value));
Edit: it seems that you use and old version of .Net, in that case you can use straightforward code without RegEx, Linq etc:
String source = "11,.Ad23";
StringBuilder sb = new StringBuilder(source.Length);
foreach (Char ch in source)
if (!Char.IsDigit(ch))
sb.Append(ch);
String result = sb.ToString();
string.Concat() ?
Join. Nothing wrong with String.Concat() it's IMHO a question of taste.
ToArray to pass a string[] to String.Join(this answer) or String.Concat(my answer).Although I like the solution proposed I think a more efficent way would be using regular expressions such as
[^\D]
Which called as
var regex = new Regex(@"[^\D]");
var nonNumeric = regex.Replace("11,.Ad23", ""));
Which returns:
,.Ad
Would a LINQ solution work for you?
string value = "11,.Ad23";
var result = new string(value.Where(x => !char.IsDigit(x)).ToArray());
ABC123DEF. Would you want to getABCDEFin that case?