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?

Answer 1

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();

Answer 2

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