Hi All,
It might be because its the end of a long week, but I can't figure out the
correct way to write a regular expression to find all matches except a
specified string.
For example, take the following 3 lines:
This is OK
This is Not OK
Again This is OK
I want to find the first and last line, and not the "This is Not OK" line.
Thanks,
PAGates 3 1822
pagates wrote: It might be because its the end of a long week, but I can't figure out the correct way to write a regular expression to find all matches except a specified string.
I don't know how to write such a regex either, but I'd do it this way:
Regex r = new Regex("This is Not OK");
if (r.IsMatch(line ) == false) { // if it doesn't match "This is Not Ok"...
// ... it's got to be Ok.
}
hth,
Max
In article <78************ *************** *******@microso ft.com>,
pagates <pa*****@discus sions.microsoft .com> wrote:
: It might be because its the end of a long week, but I can't figure out
: the correct way to write a regular expression to find all matches
: except a specified string.
:
: For example, take the following 3 lines:
: This is OK
: This is Not OK
: Again This is OK
:
: I want to find the first and last line, and not the "This is Not OK"
: line.
That's actually a little tricky. If you don't believe me, try to
construct a regular expression that doesn't contain the string "ab".
Then do the same for "abc".
Why not use the much simpler approach of looking for match failures?
static void Main(string[] args)
{
string[] inputs = new string[] {
"This is OK",
"This is Not OK",
"Again This is OK"
};
Regex dontwant = new Regex(@"^This is Not OK$");
foreach (string input in inputs)
if (!dontwant.Matc h(input).Succes s)
Console.WriteLi ne(input);
}
If we had a better idea of the problem you're trying to solve, we could
probably give you more useful advice.
Greg
Hi Greg,
The problem I'm to solve is actually writing a macro in the IDE to find
(next and previous) #region keywords. I have no problem doing that, but the
unfortunate side effect is that when they are found, they are expanded.
Therefore, I was looking for a quick-n-dirty way to skip the "Component
Designer generated code" region.
The IDE Macro find allows searching using Regular Expressions, so I thought
I could do so here. More of a curiousity than something I want to spend any
significant time on.
Thanks,
PAGates
"Greg Bacon" wrote: In article <78************ *************** *******@microso ft.com>, pagates <pa*****@discus sions.microsoft .com> wrote:
: It might be because its the end of a long week, but I can't figure out : the correct way to write a regular expression to find all matches : except a specified string. : : For example, take the following 3 lines: : This is OK : This is Not OK : Again This is OK : : I want to find the first and last line, and not the "This is Not OK" : line.
That's actually a little tricky. If you don't believe me, try to construct a regular expression that doesn't contain the string "ab". Then do the same for "abc".
Why not use the much simpler approach of looking for match failures?
static void Main(string[] args) { string[] inputs = new string[] { "This is OK", "This is Not OK", "Again This is OK" };
Regex dontwant = new Regex(@"^This is Not OK$");
foreach (string input in inputs) if (!dontwant.Matc h(input).Succes s) Console.WriteLi ne(input); }
If we had a better idea of the problem you're trying to solve, we could probably give you more useful advice.
Greg This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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