File Picker - Regular Expression

Ryan Kelley

2. Juli 2015 00:31

I am noticing that even though I am setting a regular expression in my file picker item in my Display Form, I can still submit a file name value that does not follow my rule. 

My reg experession should allow file names that allow alpha-numeric char's as well as underscores and periods: ^[a-zA-Z0-9._]+$ - this tests out in the "test" text box when designating the reg expression. 

However, I can add a file through the file picker that has an ampersand for example - which breaks what I am trying to accomplish. Any ideas?

Using Essentials 4.2.2 with SLV 2.3.3

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  Ryan Cooney

  2. Juli 2015 01:37

  In Silverlight the Regular Expression validator does not run on File Picker results. Only the Required and File Size validators apply.

  --Ryan

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  Ryan Kelley

  2. Juli 2015 01:41

  No problem. I'll just strip out the bad characters after the file name is decided.

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  Ryan Kelley

  2. Juli 2015 03:01

  Can anyone offer some quick reg expression support to disallow all special characters except a period?

  Say I have "Miss?@.png" as my fileName - how do I get it to "Miss.png" ? I have been trying to figure out how to allow alpha numeric characters and a period only.

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  Ryan Kelley

  2. Juli 2015 03:35

  I think this should do it:

  "[)(?*"",\\<>&#~%{}+_@:\/!;$^]+"

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