How can I count the number of commas "," in a TextBox.text ?

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VS2008

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Hi guyz,

I wrote a tiny programme in VB.NET using VS.NET 2008 to sort numbers.

I take the input of numbers separated by commas from TextBox1.text, play some algorithm then by clicking a button, display the sorted values in TextBox2.text.

NOW i want to restrict the numbers to be only 20 positions (eg. 32,1,6,32,12,21,21,54,675,8,4,3,2,9,0,21,21,21,43,744) in the TextBox1.text and so i thought of counting the commas :laugh:

Can I do that, how? OR is there any better way to achieve this?

Thanks

Posted 6-Dec-09 22:00pm

nGrafix

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Ashish Sheth · Accepted Answer · 2009-12-06T22:12:00

Solution 1

No need to count the commas.
Use Textbox1.Text.Split(',').Length. It gives you the count of the numbers added in the textbox separated by comma.

Posted 6-Dec-09 22:12pm

Ashish Sheth

sim099 · Accepted Answer · 2009-12-07T00:01:00

Solution 2

You could do it the reqular expression way:
Dim valid AS Boolean = Regex.IsMatch(TextBox1.Text, "^(,?\d+){0,20}$")

This would also validate the input, anything other than numbers or commas would return false.

Posted 7-Dec-09 0:01am

sim099

How can I count the number of commas "," in a TextBox.text ?

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Solution 2

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How can I count the number of commas "," in a TextBox.text ?

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