file extension validation

[gyanendar]

Hi ,
I want to validate the file extension (.pdf) in through "RegularExpressionValidator" (asp.net) .I am not able to decide what
ValidationExpression shall i use.
Please help.
Manohar

[debasisdas]

You need to check for the part after the " . " from right side of the filename.

[gyanendar]

You need to check for the part after the " . " from right side of the filename.

Yes I need to check the extension of file.
I am using validationExpression="/^.+(\.(pdf))$"
But its not working.
Regards,
Manohar

[r035198x]

Yes I need to check the extension of file.
I am using validationExpression="/^.+(\.(pdf))$"
But its not working.
Regards,
Manohar

If you have the file name in a string variable, you can use

if(fileName.EndsWith(".pdf"))

[gyanendar]

If you have the file name in a string variable, you can use

if(fileName.EndsWith(".pdf"))

I have file path stored in a variable.But this code works in code file.I need to do it from client side (java Script).
I wrote a function and achive the result.
But i want another solution.
Regards,
Manohar

[Sameerlucky]

Gyanender,

U can use the below example as reference...

<asp:RegularExpressionValidator
id="RegularExpressionValidator1" runat="server"
ErrorMessage="Only mp3, m3u or mpeg files are
allowed!" ValidationExpression="^(([a-zA-
Z]:)|(\\{2}\w+)\$?)(\\(\w[\w
].*))+(.mp3|.MP3|.mpeg|.MPEG|.m3u|.M3U)$"
ControlToValidate="File1">
</asp:RegularExpressionValidator>

As ur case is to check for .pdf extension, then just repalce +(.mp3|.MP3|.mpeg|.MPEG|.m3u|.M3U) with +(.pdf|.PDF)

Regards,
Sameer