Get the string with regular expressions

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I want to get the file names like TestUploads(1).xls or TestUploads(2).xls etc. Im used the regular expressions for number .

I tried below code but it's not working.
Please any one help.

C#

if (Regex.IsMatch(FileUpload.FileName, "TestUploads(^[0-9]$).xls", RegexOptions.IgnoreCase))
               {
                     // My Code

               }

Posted 15-May-14 3:29am

Bajid Khan

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2 solutions

Solution 1

Try that instead:

C#

if (Regex.IsMatch(FileUpload.FileName, "^TestUploads\([0-9]+\)\.xls$", RegexOptions.IgnoreCase))
{
   // My Code
}

The problem was the '^' and '$' aroung '[0-9]': '^' and '$' respectively denotes the start and end of the input; when you place them inside an expression, nothing can match. There was also the need to escape parenthesis and point, since these characters have a special meaning inside the regular expression.
I also modified the regex to accept more than one digit between parenthesis.

When it comes to using and constructing regular expressions, you really should have a look at Expresso ; not only will it allow you to build your custom expressions, but also will it teach you some basics about them.
Here: Expresso[^]

Posted 15-May-14 3:35am

phil.o

Updated 15-May-14 3:39am

v3

Comments

_Asif_ 15-May-14 9:38am

It is not verifying the "(" and ")" characters but it is verifying "TestUploads1.xls"

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_Asif_ · Accepted Answer · 2014-05-15T03:36:00

Solution 2

Try this

C#

if (Regex.IsMatch(FileUpload.FileName, "^TestUploads\(([0-9])+\)+.xls$", RegexOptions.IgnoreCase))
               {
                     // My Code

               }

Posted 15-May-14 3:36am

_Asif_

Comments

Bajid Khan 15-May-14 10:10am

working fine .Thanq very much