Find comma in a Textbox full of integers

Question

I got a textbox that should be filled with int of 4 number, something like this [0000, 4444, 5555, 6666]. I need to get where is the comma and then put the 4 numbers in a var. Can you help me?

Have you tried String.Split()? (http://msdn.microsoft.com/de-de/library/system.string.split%28v=vs.110%29.aspx) — DIF, Apr 11 '14 at 08:12

score 8 · Accepted Answer · answered Apr 11 '14 at 08:13

Have you tried String.Split?

string[] allTokens = textBox1.Text.Split(new []{ ','}, StringSplitOptions.RemoveEmptyEntries);
int[] allInts = Array.ConvertAll<string, int>(allTokens, int.Parse);

If the format can be invalid you can use int.TryParse:

int num = 0;
int[] allInts = allTokens
    .Where(s => int.TryParse(s, out num))
    .Select(s => num)
    .ToArray();

score 3 · Answer 2 · edited May 23 '17 at 10:25

3

You will get int list

var numbers = TextBox1.Text.Split(',').Select(str => {
                         int value;
                         bool success = int.TryParse(str, out value);
                         return new { value, success };
                     })
              .Where(pair => pair.success)
              .Select(pair => pair.value).ToList();

Reference

edited May 23 '17 at 10:25

Community

1
1

answered Apr 11 '14 at 08:12

Nikhil K S

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nice, I like the lambda, but what happens when there is not an int? – Christian Sauer Apr 11 '14 at 08:13

score 2 · Answer 3 · edited Apr 11 '14 at 08:27

2

You could try

var resultArr = tb.split(",");
foreach (elem in resultArr)
{
    int i;
    if (int.tryparse(elem, out i))
        // do something with i
    else
        // that was not an int
}

edited Apr 11 '14 at 08:27

Mo Patel

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answered Apr 11 '14 at 08:13

Christian Sauer

10,351
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85

1

And the methods' casing? – Mo Patel Apr 11 '14 at 08:28

Find comma in a Textbox full of integers

3 Answers3