Regular Expression to exclude some special characters
Hi,
I am working on C# and ASP.Net1.1
I require a reqular expression which can accept any character other than
single quote('), double quote("), @, %,#
Can anyone help me in this
Thanks
I am working on C# and ASP.Net1.1
I require a reqular expression which can accept any character other than
single quote('), double quote("), @, %,#
Can anyone help me in this
Thanks
Last Comment
You could use a character class. The regex would look like:
['"@%#]
In C# that would be:
['"@%#]
In C# that would be:
System.Text.RegularExpressions.Regex.IsMatch("test", "['\"@%#]")
Note that there's a slight difference between ddrudik's and my attempts: mine will test true if any of your mentioned characters hit, wherever in the string. Ddrudik's will match when all characters are not of the set you mentioned.
In terms of performance they may differ a bit, but in ASP, I wouldn't bother too much about that.
In terms of performance they may differ a bit, but in ASP, I wouldn't bother too much about that.
>I require a reqular expression which can accept any character other than...
That is what my offered solution was constructed to match. It will only match true if all characters in the string tested are not a ',",@,% or #.
That is what my offered solution was constructed to match. It will only match true if all characters in the string tested are not a ',",@,% or #.
:)
I didn't mean to say you were wrong. They are two approaches to the same requirement.
I didn't mean to say you were wrong. They are two approaches to the same requirement.
No worries here.
ASKER
Thanks all
ddrudik's expression works great
Can you please help me in understanding this
^[^'"@%#]+$
What is +$ at the end means
Thanks again to all for co-operation
ddrudik's expression works great
Can you please help me in understanding this
^[^'"@%#]+$
What is +$ at the end means
Thanks again to all for co-operation
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Using * instead of + would match 0 or more times, which would allow an empty string. + requires that the string be at least 1 character in length.
In case you want to know more, as a good starting point (and to a certain extend also for advanced users): http://www.regular-expressions.info/ is a good place to be...
ASKER
Thanks
Thanks for the question and the points.
C#
C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).
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Double the ' or " depending on how you enclose the pattern in code.