How to replace numeric value in C#?

Question

1.67/5 (2 votes)

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My Code is:
string input = "8,16,9,18,19";
string output = input.Replace("8","");

I want the output like this:

output="16,9,18,19";

Any Help would be appreciated and please dont use the Regex method or function

Thanks

What I have tried:

I Tried
string input = "8,16,9,18,19";
string output = input.Replace("8","");

But My Ouput comes like this:
output="16,9,1,19";

Posted 20-Jul-17 0:21am

Member 12693375

Updated 3-Aug-17 18:39pm

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OriginalGriff · Answer 1 · 2017-07-20T00:33:00

Solution 2

String.Replace changes all matching values, so your "18," matches as well as the one you want.
If you always want to remove the first one, then use a substring with IndexOf:

C#

string input = "8,16,9,18,19";
string output = input.Substring(input.IndexOf(',') + 1);

Posted 20-Jul-17 0:33am

OriginalGriff

Comments

Member 12693375 20-Jul-17 6:43am

Wrong Answer Sir u can check it practically
string input1 = "8,16,9,18,19";
string output1 = input1.Substring(input1.IndexOf(',') + 2);

It gives me output like this: "6,9,18,19";

OriginalGriff 20-Jul-17 6:48am

Why did you put "+ 2" when I put "+ 1"?

Vijayavel Nadar · Answer 2 · 2017-07-20T08:11:00

A regex is the easiest approach:

string input = "test, and test but not testing.  But yes to test";
string pattern = @"\btest\b";
string replace = "text";
string result = Regex.Replace(input, pattern, replace);
Console.WriteLine(result);

The important part of the pattern is the \b metacharacter, which matches on word boundaries. If you need it to be case-insensitive use RegexOptions.IgnoreCase:

Regex.Replace(input, pattern, replace, RegexOptions.IgnoreCase);

Karthik_Mahalingam · Answer 3 · 2017-07-20T00:30:00

string input = "8,16,9,18,19";
           string[] items = input.Split(',');
           string replace = "8";
           List<string> lst = new List<string>();
           foreach (string item in items)
               if (item != replace)
                   lst.Add(item);
           string output = string.Join(",", lst);


           // using linq
           string output1 = string.Join(",", input.Split(',').Where(k => k != replace));

F-ES Sitecore · Answer 4 · 2017-07-20T00:44:00

string input = "8,16,9,18,19";

input = string.Join(",", input.Split(new[] { ',' }).Select(i => i.Trim()).Where(i => i != "8"));

The above allows for spaces in the string also, like "8, 16, 9, ...". If you can guarantee there are no spaces you can omit the Trim

string input = "8,16,9,18,19";

input = string.Join(",", input.Split(new[] { ',' }).Where(i => i != "8"));

Patrice T · Answer 5 · 2017-07-20T14:39:00

Quote:
How to replace numeric value in C#?

You are not working on numeric value, it is a string.

Your code removes all char '8' in the string.
The most simple way to get your output is to get a substring starting at char 2.

C#

string input = "8,16,9,18,19";
string output = input.Substring(2);

Other approaches are possible, including RegEx, as you can see on other solutions. But for that, we need to your exact criteria.

Zahid Mughal · Answer 6 · 2017-08-03T18:39:00

Solution 6

Use

string out1= obj.Substring(2);

to always remove from starting index. And if you want to remove from anywhere in string, needs a generic method to construct.

Posted 3-Aug-17 18:39pm

Zahid Mughal

How to replace numeric value in C#?

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