Regular Expression Pattern

  • Thread starter Thread starter Ben
  • Start date Start date
B

Ben

Hi,

I need to write a regex pattern that goes like this:
All the supplies strings, except a specific string.
So for example if I choose the string to operate on to be "Apple",
the pattern should return match for all strings except "Apple".
I need just the regex pattern, not an implementation in C#.

Thanks,
Ben
 
Ok.

Let's say I have an array of strings: {"Apple", "Banana", "Orange"}.
And suppose that I ask the user to enter a string.
I then iterate the array and if the current string in the iteration doesn't
match the string the user entered, I add it to another array.

I need the regex pattern to have a Not logic in it, or something like that.
 
Ben said:
Let's say I have an array of strings: {"Apple", "Banana", "Orange"}.
And suppose that I ask the user to enter a string.
I then iterate the array and if the current string in the iteration doesn't
match the string the user entered, I add it to another array.

I need the regex pattern to have a Not logic in it, or something like that.
Click to expand...

The suggestion is not to build the "not matching" into the regular
expression but rather to put it into the C# code where you would do e.g.
if (!Regex.IsMatch(input, pattern))
 
Ahhhh, if it were that simple :)

I don't have the source code for the application.
It displays a list of values and I need to supply it with a regular
expression for not matching a specific value that I choose.
Well, I've played around with it a little and came up with this pattern:
(?!Apple).*
This seems to somehow work, but I need to also to be able to supply more
than one value. I tried (?!Apple).*|(?!Banana).* but it didn't work. I guess
I need to "And" them, not to "Or" them.

Any ideas?
 
Ok.

Let's say I have an array of strings: {"Apple", "Banana", "Orange"}.
And suppose that I ask the user to enter a string.
I then iterate the array and if the current string in the iteration doesn't
match the string the user entered, I add it to another array.

I need the regex pattern to have a Not logic in it, or something like that.
Click to expand...

Why do you need a regular expression?
Just use the string comparison functions.
 
I guess i've found a solution.
If for example I want to include all strings but "Apple", I'd write the
following pattern:

(?!Apple).*

And if for example I want to include all but "Apple" and "Banana", I simply
need to use the pipe character '|', so I'd write the following:

(?!Apple|Banana).*

That's it (after two days of trial and error :) )
 
I guess i've found a solution.
If for example I want to include all strings but "Apple", I'd write the
following pattern:

(?!Apple).*

And if for example I want to include all but "Apple" and "Banana", I simply
need to use the pipe character '|', so I'd write the following:

(?!Apple|Banana).*

That's it (after two days of trial and error  :) )
Click to expand...

Applesauce
 
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