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How do I split a list on a certain character? [closed]

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For example, if I have this string: this is item 1 (splithere) this is item 2
Then I want to split the list on character (splithere)
So then the array will be:
[ "this is item 1", "this is item 2" ]
Is there a method for this solution?

You can use string.Split()
var myString = "word1 delimiter word2";
var myList = myString.Split("delimiter");
myList will be ["word1 ", " word2"]
See more here: https://learn.microsoft.com/en-us/dotnet/csharp/how-to/parse-strings-using-split

you can use the String.Split method to split a string into an array of substrings based on a specified delimiter. Here's an example:
string input = "this is item 1 (splithere) this is item 2";
string delimiter = "(splithere)";
string[] items = input.Split(new string[] { delimiter }, StringSplitOptions.RemoveEmptyEntries);
In this example, we're using the Split method to split the input string into an array of substrings using the (splithere) delimiter. The second parameter, StringSplitOptions.RemoveEmptyEntries, specifies that any empty entries in the resulting array should be removed.
After running this code, the items array will contain the following two strings:
["this is item 1 ", " this is item 2"]

string str = "this is item 1 (splithere) this is item 2"
var arr = str.Split(new[] {"(splithere)"}, StringSplitOptions.None)

how to split base64 text into base64 strings c# [closed]

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I have a base64 text example:
UAAAAAAAAAA=AAAAAAAA8D8AAAAAAADwPwAAAAAAAPA/AAAAAAAA8D8AAAAAAADwPwAAAAAAAPA/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=KAAAAAAAAAA=AAAAAAAA8D8AAAAAAAAAQAAAAAAAAAhAAAAAAAAAEEAAAAAAAAAAAA==
I need to split it into sides like this:
UAAAAAAAAAA=
AAAAAAAA8D8AAAAAAADwPwAAAAAAAPA/AAAAAAAA8D8AAAAAAADwPwAAAAAAAPA/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
KAAAAAAAAAA=
AAAAAAAA8D8AAAAAAAAAQAAAAAAAAAhAAAAAAAAAEEAAAAAAAAAAAA==
I tried:
string base64Text = "UAAAAAAAAAA=AA....."
Regex regex = new Regex(#"^[a-zA-Z0-9+/]*={0,2}$");
string[] base64Strings = regex.Split(base64Text);

You could split on a position where there is a char A-Z or 0-9 to the left and not a = char or the end of the string to the right:
(?<=[A-Z0-9]=)(?!=|$)
Regex demo
string base64Text = #"UAAAAAAAAAA=AAAAAAAA8D8AAAAAAADwPwAAAAAAAPA/AAAAAAAA8D8AAAAAAADwPwAAAAAAAPA/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=KAAAAAAAAAA=AAAAAAAA8D8AAAAAAAAAQAAAAAAAAAhAAAAAAAAAEEAAAAAAAAAAAA==";
Regex regex = new Regex(#"(?<=[A-Z\d]=)(?!=|$)");
string[] base64Strings = regex.Split(base64Text);
foreach (string s in base64Strings)
{
Console.WriteLine(s);
}
Output
UAAAAAAAAAA=
AAAAAAAA8D8AAAAAAADwPwAAAAAAAPA/AAAAAAAA8D8AAAAAAADwPwAAAAAAAPA/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
KAAAAAAAAAA=
AAAAAAAA8D8AAAAAAAAAQAAAAAAAAAhAAAAAAAAAEEAAAAAAAAAAAA==

How do I remove an X number of capital letters from a string? [closed]

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I want to remove an X number of capital letters from a string.
For example if I had the strings:
string Line1 = "NICEWEather";
and
string Line2 = "HAPpyhour";
How would I create a function that pulls out the 2 sets of Capital letters?

Try using regular expressions with \p{Lu} for a Unicode capital letter
using System.Text.RegularExpressions;
...
// Let's remove 2 or more consequent capital letters
int X = 2;
// English and Russian
string source = "NICEWEather - ХОРОшая ПОГОда - Keep It (HAPpyhour)";
// ather - шая да - Keep It (pyhour)
string result = Regex.Replace(source, #"\p{Lu}{" + X.ToString() + ",}", "");
Here we use \p{Lu}{2,} pattern: capital letter appeared X (2 in the code above) or more times.

To remove capital letter from string
string str = " NICEWEather";
Regex pattern = new Regex("[^a-z]");
string result = pattern.Replace(str, "");
Console.WriteLine(result );
output: ather
to remove capital letter if occurrences more than once in sequence order then try this
string str = " NICEWEather";
Regex pattern = new Regex(#"\p{Lu}{2,}");
string output = pattern.Replace(str, "");
Console.WriteLine(output);

Get values between string in C# [closed]

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I have a string value like "%2%,%12%,%115%+%55%,..."
Sample inputs "(%2%+%5%)/5"
Step1:
get the vales 2 and 5
Step2:
get values from table column2 and column5
step3:
from that value (Column2+Column5)/5
How to get the values from that string
2,12,115,55
Also
commas, "+" (symbols)
Thanks in Advance.
I referred these links:
Find a string between 2 known values
How do I extract text that lies between parentheses (round brackets)?

You can replace the % and then split on the , and +:
var value = "%2%,%12%,%115%+%55%,";
value = value.Replace("%", "");
var individualValues = value.Split(new[] {',', '+'});
foreach (var val in individualValues)
Console.WriteLine(val);

If I understand you correctly...
var string = "%2%,%12%,%115%+%55%";
var values = string.replace("%", "").replace("+", "").split(',');
Edit: Actually, I think you mean you want to split on "+" so that becomes split(',', '+')

str.Replace("%", "").Replace("+",",").Split(',');
This will do it.
Another regex solution:
foreach (Match m in Regex.Matches(str, #"\d+"))
// m.Value is the values you wanted

Using regular expressions:
using System.Text.RegularExpressions;
Regex re = new Regex("\\d+");
MatchCollection matches = re.Matches("%2%,%12%,%115%+%55%,...");
List<int> lst = new List<int>();
foreach (Match m in matches)
{
lst.Add(Convert.ToInt32(m.Value));
}

It's possible parsing the string with splits and other stuff or through Regex:
[TestMethod]
public void TestGetNumberCommasAndPlusSign()
{
Regex r = new Regex(#"[\d,\+]+");
string result = "";
foreach (Match m in r.Matches("%2%,%12%,%115%+%55%,..."))
result += m.Value;
Assert.AreEqual("2,12,115+55,", result);
}

Compare regular expression [closed]

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I want to compare following string by Regular Expression. I have surf lot of time but unable to get it's pattern.
string str = "Full Name: Atif Mahmood"
+ "ID Number: 12345678901"
+ "Mobile Number: +921234567890";
In above string
Full Name:
ID Number:
Mobile Number:
are necessary with sequence and there should be any string after these constants.

var regex = "Full Name:(.*)ID Number:(.*)Mobile Number:(.*)";
var match = Regex.Match(string, regex);
match.Groups[1] will contain the name, [2] will contain the ID number, etc. (Groups[0] is the whole match group, so counting each match starts at 1)
This probably needs some bullet proofing, but you get the idea?

In case you want to check that the string follows the pattern you stated, this expression should do it:
const string expression = "Full Name:.*ID Number:.*Mobile Number:.*";
bool correct = Regex.IsMatch(str, expression);