Checking if TextBox Contains Specific Character Order

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I have a textbox that the user can only enter characters in a certain order into to enable a button. I would like it to be like this: (N = 'number' and L = 'letter')

C#

IF textBox1 contains character order of (NNNNNLNN-NNNL-NNLL-NLNN-LNNLLLNNLLLL)
    { button1.Enabled = true; }
ELSE { button1.Enabled = false; }

So I want to enable the button if the order and amount of letters, numbers and dashes is in the correct combination of NNNNNLNN-NNNL-NNLL-NLNN-LNNLLLNNLLLL. How would I do this in C#. Thanks

Posted 5-Oct-13 11:42am

Henry Hunt

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BillWoodruff 5-Oct-13 21:34pm

What have you tried so far ? Is this WinForms ? ASP.NET ?

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Ravi Bhavnani · Answer 1 · 2013-10-05T13:06:00

Solution 1

I recommend using Regex to determine this. See this[^] awesome Regex tutorial and this[^] page to test your Regex expression.

/ravi

Posted 5-Oct-13 13:06pm

Ravi Bhavnani

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BillWoodruff 7-Oct-13 0:30am

Those are excellent resources, Ravi.

thanks, Bill