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Excel file checking using RegularExpressionValidator

Posted on 2007-03-19
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Last Modified: 2008-01-09
Hi

I am working on ASP.net2.0, C#

I have a regular expression which checks if file is xls or not

It works fine, if we sellect the file from local system or map drive

But it does not work if we take the file from map drive

like
\\barney\Testing\Excel Example_R1.xls

My RegularExpressionValidator is

<asp:RegularExpressionValidator id="RegExpFile" runat="server" ErrorMessage=" "
ControlToValidate="FileUpload1" ValidationExpression="^.+\.((xls)|(XLS)|(Xls))$"></asp:RegularExpressionValidator>


Please help

This is very urgent for me
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Question by:dinesh_bali
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3 Comments
 
LVL 84

Expert Comment

by:ozo
ID: 18749605
It looks like the expression should work for
\\barney\Testing\Excel Example_R1.xls
Does it make any difference if you omit the "^.+"
0
 

Author Comment

by:dinesh_bali
ID: 18750278
Sorry, It was [a-zA-Z0_9].*\bxls\b

Is the ="^.+\.((xls)|(XLS)|(Xls))$

As I only want user should select only excel file, he should not able to select any other file

Thanks
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LVL 16

Accepted Solution

by:
AlexNek earned 2000 total points
ID: 18753063
It is look OK, it can parse the lines. I test exresion. It is possible that you have an additional symbol in "wrong line" or missied new line symbol.
^ (anchor to start of string)
. (any character)
+ (one or more times)
.
Capture
  Capture
    xls
  End Capture
    or
  Capture
    XLS
  End Capture
    or
  Capture
    Xls
  End Capture
End Capture
$ (anchor to end of string)
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