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How to negate whole regex [closed]

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I have a pattern (pattern) and I want to exclude this characters in string 'test' and find all holes in this expression. Like test, but this characters will be random
For the string 'test' I expect 'test' which is not matched by pattern ()

You could use Regex#Match here:
Regex regex = new Regex(#"(XZ|RP(?!ROD)|R|DP(?!ROD)|D|ST[\d]?|WO)");
Match match = regex.Match("testRPRODRRPWO");
if (!match.Success)
{
Console.WriteLine("input does not contain pattern");
}

Alphabet Regex Pattern? [closed]

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If I have a letter say "w" and I want to it to match only against a few characters in the alphabet for example " the letter a, d and then h to q and w only. How can I achieve this?
All I have so far is : ^[h-qH-Q]+$
I assume its pretty easy but i'm not really a regex expert...

Try this regex:
^[aAdDh-qH-QwW]$
It will only match single letters on the input line.
Hoping this is what you mean.

Searching and Extracting substring recursively with RegEx [closed]

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I'm wondering if there is a RegEx pattern to solve my problem.
I'm getting strings like:
"Running script A23jddie392.sql",
"Skipped script ew223.sql",
"Script 2234ffss321.sql has an error"
and so on.
Is it possible to extract the scriptname with RegEx? Maybe searching for the .sql and then going recursively to the first blank before the scriptname?
Thank you!

Here is the code:
var pattern = "\\s\\w+[.]sql";
var test = "Script 2234ffss321.sql has an error";
var match = Regex.Match(test, pattern);
if (match.Success)
{
Console.WriteLine(match.Groups[0].Value);
}

C# Regex to split string by commas that are only before "or" [closed]

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I would like to split the following string based on the commas that come before the "or" delimiter and on the "or", but not after. For example
Almondmilk, Coconutmilk or Soymilk Select Varieties, Half Gallon
becomes
Almondmilk
Coconutmilk
Soymilk Select Varieties, Half Gallon

Given your requirement as described:
var output = Regex.Split(input, "(?<!or.*),");
However, given your sample output it seems you want to split on 'or' as well:
var output = Regex.Split(input,
"((?<!or.*),)|(or)",
RegexOptions.ExplicitCapture);

Error 1 ) expected for add a string in list [closed]

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Why is this error?
How to fix this error?
The semicolons are wrong
List<string> codeForPortal=new List<string>();
codeForPortal.Add("<script type="text/javascript" src="http://mysite.com/JsFile/jquery-1-10-1-min.js\"></script>");

You have to escape the double quote using \:
codeForPortal.Add("<script type=\"text/javascript\" src=\"http://mysite.com/JsFile/jquery-1-10-1-min.js\"></script>");

you need a few "\"
List<string> codeForPortal=new List<string>();
codeForPortal.Add("<script type=\"text/javascript\" src=\"http://mysite.com/JsFile/jquery-1-10-1-min.js\"></script>");

The problem is that you're not escaping your quotes correctly.
codeForPortal.Add("<script type=\"text/javascript\" src=\"http://mysite.com/JsFile/jquery-1-10-1-min.js\"></script>");