Question

I need to check if a string is only built up using 1, 0 and comma. It should also starts with either 0 or 1 and also ends with 0 or 1:

The checking for start and end can be done like this (Or if you think it can be improved peplase let me know!)

if ((text.StartsWith("0") || text.StartsWith("1")) //Starts with 0 or 1
    && (text.EndsWith("0") || text.EndsWith("1")) //Ends with 0 or 1
    && //How to check if it only has 0, 1 and comma?            )
{
    //Do Something!
}

Answer 1

You can use Regex, try this:

if (new Regex("^[01][01,]*[01]$").Match(text).Success)
{
   // do your stuffs
}