Extract number between bracket and colon [closed] - c#

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I need a regular expression to extract number 513922 from this string.
Error detected (513922: settings can not be applied.), param d1=0.0, d2=0.0 in operation mode

If you insist on regular expression:
string source =
"Error detected (513922: settings can not be applied.), param d1=0.0, d2=0.0 in...";
// 513922
string result = Regex.Match(source, #"(?<=\()[0-9]+(?=:)").Value;
// if you want integer representation:
int number = int.Parse(result);

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How to count Upper-Case, Lower-Case and special characters [closed]

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I want to create a GUI in C#. In this GUI, I have a single text field and when I fill this text field, I would like to see how many Upped-case, Lower-case and special characters are used.
About upper and lower take a look this.
int upperCasecount = s.Count(c => char.IsUpper(c));
int lowerCaseCount = s.Count(c => char.IsLower(c));
This is for the case of special characters count.
int numOfSpecialChar = s.Count(c => !char.IsLetterOrDigit(c));

how can i get string between two commas? [closed]

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I have a string like:
43965.96000,16933.986,404689.986,5814892.171,77.464,52.47585589,13.59670032,77.464,0.675,-0.223
I want to just keep the string which is bold in characters between commas. How can I do that?
To take your question literally, you could do write a method to split the string by comma and just take the element at the 5th index:
string ParseData(string data)
{
return data.Split(',')[5];
}
So you'll be able to do something like:
string data = "43965.96000,16933.986,404689.986,5814892.171,77.464,52.47585589,13.59670032,77.464,0.675,-0.223";
string result = ParseData(data); // Result = "52.47585589"

String Manipulation using regex and rules [closed]

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I'm new to regex but it looks as though this will work for what I need, but I just can't get my head around it.
I have a string "MAMMOTH 9MM" as an example.
All should stay upper case except the specified chars of "MM" after any digit.
Should be simple?
You can look for regular expression patterns and apply a lambda function to modify the matches:
input = Regex.Replace(input, #"(?<=\b[0-9]+)MM\b", m => m.ToLower())

RegExp to search words starts with numbers and special characters only using C# [closed]

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I want to perform a search to C# list object to find all products starts with any number or special characters only. I am looking for a Regular expressions for this scenario.
Please help
Assuming you list is a list of string:
var newList = yourList.Where(element => Regex.IsMatch(element, #"^[^a-z]", RegexOption.IgnoreCase);
It will give you a sublist of all the elements that doesn't start with a letter in the range a-z.

Get word in betwen first and last of a string [closed]

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my problem is to get word in between first and last of a string for example string st="abcdefghi" and my problem is to get only def
substring between first 3 and last 3 chars
string substring=str.Substring(3,str.Lenghth-6)

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