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Regular Expression To Accept only (.) ?

If any one knows what is the regular expression to accept only (.) For Example i have years of experience 4.5 then it should allow special character only . other than . if i enter any other spl character it should give error. Please help me in this.

Ganapatisb Monday, September 07, 2009 1:30 PM

Hi,
I hope it will help you

 Regex regex = new Regex("^[a-zA-Z0-9\.]*$");
            if (regex.IsMatch(textBox1.Text))
            {
                errorProvider1.SetError(textBox1, String.Empty);
            }
            else
            {
                errorProvider1.SetError(textBox1,
                      "Error");
            }

Best Regards, C.Gnanadurai ----------------------- Please mark the post as answer if it is helpfull to you

Proposed As Answer byGnanadurai Tuesday, September 08, 2009 5:58 AM
Marked As Answer byLing WangMSFT, ModeratorMonday, September 14, 2009 3:33 AM
Edited byGnanadurai Tuesday, September 08, 2009 2:05 AM

Gnanadurai Monday, September 07, 2009 1:56 PM

Hi,
I hope it will help you

 Regex regex = new Regex("^[a-zA-Z0-9\.]*$");
            if (regex.IsMatch(textBox1.Text))
            {
                errorProvider1.SetError(textBox1, String.Empty);
            }
            else
            {
                errorProvider1.SetError(textBox1,
                      "Error");
            }

Best Regards, C.Gnanadurai ----------------------- Please mark the post as answer if it is helpfull to you

Proposed As Answer byGnanadurai Tuesday, September 08, 2009 5:58 AM
Marked As Answer byLing WangMSFT, ModeratorMonday, September 14, 2009 3:33 AM
Edited byGnanadurai Tuesday, September 08, 2009 2:05 AM

Gnanadurai Monday, September 07, 2009 1:56 PM

Hi,

Yes I think you can also escape the period using a backslash

\.

www.dsmyth.net | www.dsmyth.net/wiki

Derek Smyth Monday, September 07, 2009 3:58 PM

The following shows some information about Regular Expressions. At the end of this KB, it gives some useful links. Hope this helps.

How to match a pattern by using regular expressions and Visual C#

http://support.microsoft.com/kb/308252/en-us

By the way, you can get more information from Regular Expressions Forum:

http://social.msdn.microsoft.com/Forums/en-US/regexp/threads

Best regards,

Ling Wang

Please remember to click “Mark as Answer�?on the post that helps you, and to click “Unmark as Answer�?if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Ling Wang Monday, September 14, 2009 3:33 AM

You can use google to search for other answers

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