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String Manipulation and splitting string

string url = "test:app:https://test#hotmail.co.uk:Test
I need to split this up to display as follows
string first = "app";
string second = "https://test#hotmail.co.uk:Test";
i have tried the following but falls over on the last colon.
string remove= "";
remove= url.Replace("test:", "");
string first= remove.Substring(remove.LastIndexOf(':') + 1);
string second= remove.Substring(0, remove.IndexOf(':'));
Doing this i get
first = "app";
second = "Test";
When i need
first = "app";
second = "https://test#hotmail.co.uk:Test";

Your use of LastIndexOf is just a bit wonky.
string url = "test:app:https://test#hotmail.co.uk:Test";
string remove = url.Replace("test:", "");
string first = remove.Substring(0, remove.IndexOf(":"));
string second = remove.Substring(remove.IndexOf(first) + first.Length + 1);
First grab the app, and we can use the location of app to derive the rest of the string. Because the last index of : would be the one in :Test. We don't want the last index of :. Instead we just want whatever comes after app.

As everything is prefixed with test: you can use a starting position after that and then split after the first occurrance of the : character.
const int IndexOfPrefix = 5; // start position after "test:"
string url = "test:app:https://test#hotmail.co.uk:Test";
var indexOfApp = url.IndexOf(':', IndexOfPrefix);
var part1 = url.Substring(IndexOfPrefix, indexOfApp - IndexOfPrefix);
var part2 = url.Substring(indexOfApp + 1);
Console.WriteLine(part1);
Console.WriteLine(part2);

Something like this should do the trick:
public void ManipulateStrings()
{
string url = "test:app:https://test#hotmail.co.uk:Test";
url = url.Replace("test:", "");
string first = url.Substring(0, url.IndexOf(':'));
string second = url.Substring(url.IndexOf(':') + 1);
}
This basically removed test: from your string, then assigns first and second their values without creating string remove = "" for no reason.

You can use Split(Char[], Int32) to get the desired number of elements (3 : the first unwanted part, the first expected part and the remaining) along with Skip() to remove the unwanted one :
string url = "test:app:https://test#hotmail.co.uk:Test";
var splitted = url.Split(new [] { ':' }, 3).Skip(1).ToArray();
var first = splitted[0];
var second = splitted[1];
Console.WriteLine(first);
Console.WriteLine(second);
This outputs
app
https://test#hotmail.co.uk:Test
Another way to do that is using regular expressions :
The pattern :(?<first>.*?):(?<second>.*) will :
: search for the characters :
(?<first>.*?) creates a group named first that will match any number of any character (lazy)
: search for the characters :
(?<second>.*) creates a group named second that will match any number of any character (greedy)
In example :
string url = "test:app:https://test#hotmail.co.uk:Test";
var pattern = ":(?<first>.*?):(?<second>.*)";
var regex = new Regex(pattern); // using System.Text.RegularExpressions;
Match match = regex.Match(url);
if (match.Success)
{
var first = match.Groups["first"].Value;
var second = match.Groups["second"].Value;
Console.WriteLine(first);
Console.WriteLine(second);
}
This outputs
app
https://test#hotmail.co.uk:Test

you need to change the variable with name "first" to "second" and to change the variable with name "second" to "first"
This is your code:
string url = "test:app:https://test#hotmail.co.uk:Test";
string remove = "";
remove = url.Replace("test:", "");
string second = remove.Substring(0, remove.IndexOf(':'));
string first = remove.Substring(remove.IndexOf(":") + 1);
and this is the correct code:
string url = "test:app:https://test#hotmail.co.uk:Test";
string remove = "";
remove = url.Replace("test:", "");
string first = remove.Substring(0, remove.IndexOf(':'));
string second = remove.Substring(remove.IndexOf(":") + 1);

Is there any string.Contains or related method

I am writing a code to if characters from 1 string are present in another string. I used string.Contains but its not solving my case
string str = "abc";
string str2 = "ac";
if(str.Contains(str2))
{
Console.WriteLine("true");
}
I want result to be true. but its not returning true

How about
string str = "abc";
string str2 = "ac";
bool containsAll = !str2.Except(str).Any();
because

I am writing a code to if characters from 1 string are present in another string.
I guess you want to check: " if All characters from 1 string are present in another string."
string str = "abc";
string str2 = "ac";
Console.WriteLine(str2.All(x => str.Contains(x)));

I want to read text and replace parts that are surrounded by signals

I have a chunk of text for example
string OriginalText = "Hello my name is <!name!> and I am <!age!> years old";
I'm struggling to write a function that I can enter this text into and it will return the same string except with the values surrounded by the Tags "<!" and "!>" to be replace with actual values. I have some code written but don't know how to progress any further.
if(OriginalText.Contains("<!")) //Checks if Change is necessary
{
string[] Total = OriginalText.Split(
new Char[] { '<', '!' },
StringSplitOptions.RemoveEmptyEntries);
if(Total[1].Contains("!>")) //Checks if closing tag exists
{
string ExtTag = Total[1].Split(
new Char[] { '<', '!' },
StringSplitOptions.RemoveEmptyEntries)[0];
ExtData.Add(Total[1].Split(
new Char[] { '<', '!' },
StringSplitOptions.RemoveEmptyEntries)[0]);
return Total[1];
}
}
The desired output would be
"Hello my name is James and I am 21 years old"
I am currently getting this text from a database and so this functions purpose would be to read that text and input the correct information.
Edit: Figured out how to do it so I'm going to include it below however I'm writing this in a program called mattersphere so there will reference to functions that aren't standard c#, I will put comments next to them explain what they do.
private string ConvertCodeToExtData(string OriginalText) //Accepts text with the identifying symbols as placeholders
{
string[] OriginalWords = OriginalText.Split(' '); //Creates array of individual words
string ConvertedText = string.Empty;
int Index = 0;
foreach(string OriginalWord in OriginalWords) //Go through each word in the array
{
if(OriginalWord.Substring(0,1).Equals("<") && OriginalWord.Substring(OriginalWord.Length-1 ,1).Equals(">")) //Checks if Change is necessary
{
string[] ExtDataCodeAndSymbols = OriginalWord.Substring(1, OriginalWord.Length-2).Split('.'); //Decided to create 4 different parts inbetween the <> tags it goes Symbol(e.g £, $, #) . area to look . field . symbol //separates the Code Identifier and the ExtData and Code
try
{
foreach(ExtendedData ex in this.CurrentSession.CurrentFile.ExtendedData) //Search through All data connected to the file, Extended data is essentially all the data from the database that is specific to the current user
{
if(ex.Code.ToLower() == ExtDataCodeAndSymbols[1].ToLower())
{
OriginalWords[Index] = ExtDataCodeAndSymbols[0] + ex.GetExtendedData(ExtDataCodeAndSymbols[2]).ToString() + ExtDataCodeAndSymbols[3]; //Replace code with new data
break;
}
}
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show("Extended Data Field " + ExtDataCodeAndSymbols[1] + "." + ExtDataCodeAndSymbols[2] + " Not found, please speak to your system administrator"); //Handles Error if Ext Data is not found
}
}
Index++;
}
foreach(string Word in OriginalWords)
{
ConvertedText += Word + " "; //Adds all words into a single string and adds space
}
ConvertedText.Remove(ConvertedText.Length -1, 1); //Removes Last Space
return ConvertedText;
}
The text goes in "Hello my name is <.Person.name.> and I have <£.Account.Balance.> in my bank account" and comes out "Hello my name is James and I have £100 in my bank account"
The symbols are optional but the "." are necessary as they are used to split the strings early in the function

If you have to use <!...!> placeholders, I suggest regular expressions:
using System.Text.RegularExpressions;
...
string OriginalText = "Hello my name is <!name!> and I am <!age!> years old";
Dictionary<string, string> substitutes =
new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase) {
{ "name", "John" },
{ "age", "108"},
};
string result = Regex
.Replace(OriginalText,
#"<!([A-Za-z0-9]+)!>", // let placeholder contain letter and digits
match => substitutes[match.Groups[1].Value]);
Console.WriteLine(result);
Outcome:
Hello my name is John and I am 108 years old

Assuming you are stuck with that format, and assuming you know the list of fields ahead of time, you can compose a dictionary of replacement strings and, well, replace them.
//Initialize fields dictionary
var fields = new Dictionary<string, string>();
fields.Add("name", "John");
fields.Add("age", "18");
//Replace each field if it is found
string text = OriginalText;
foreach (var key in fields.Keys)
{
string searchFor = "<!" + key + "!>";
text = text.Replace(searchFor, fields[key]);
}
If the values for the replacement fields come from a domain object, you could just iterate over the properties using reflection:
class Person
{
public string Name { get; set; }
public int Age { get; set; }
}
class Program
{
const string OriginalText = "Hello my name is <!name!> and I am <!age!> years old";
public static void Main()
{
var p = new Person();
p.Age = 18;
p.Name = "John";
//Initialize fields dictionary
var fields = new Dictionary<string, string>();
foreach (var prop in typeof(Person).GetProperties(BindingFlags.Public | BindingFlags.Instance))
{
fields.Add(prop.Name, prop.GetValue(p).ToString());
}
///etc....
And if you need the tag check to be case insensitive, you can use this instead of String.Replace():
string searchFor = #"\<\!" + key + #"\!\>";
text = Regex.Replace(text, searchFor, fields[key], RegexOptions.IgnoreCase);

I think you're looking for this:
var str = string.Format("Hello my name is {0} and I am {1} years old", name, age);
Or, since C# 6, you can just use this:
var str = $"Hello my name is {name} and I am {age} years old";

Extract name and surname from string in c#

I need extract the name and surname from a email string.
In the database I have two type of address email working :
name.surname#xxxx.eu
Or
name.surname#xxxx.com
And I have tried this code :
string Email1 = Email.ToString().ToUpper().Replace("#", "");
if (Email1.Contains("XXXX.COM"))
{
Response.Write(Email1.ToString().Replace(".", " ").ToUpper().Remove(Email1.Length - 8, 8) + "<br />");
}
else
{
Response.Write(Email1.ToString().Replace(".", " ").ToUpper().Remove(Email1.Length - 7, 7) + "<br />");
}
This code not working for only these addresses emails :
VINCENT.NAPOLITAIN#XXXX.EU
because the return is :
VINCENT NAPOLITAINX
Not working for :
MARK.CHAIN#XXXX.COM
because the return is :
MARK CHAINX
Not working for :
NICODEMUS.ANGELICUM#XXXX.EU
because the return is :
NICODEMUS ANGELICUMX
How to do resolve this?
Please help me, thank you so much in advance.

why don't you split your address by the both seperator characters # and .
string email = "VINCENT.NAPOLITAIN#XXXX.EU";
string[] result = email.Split('.', '#').ToArray();
string firstname = result[0];
string lastname = result[1];

Simplistic approach (based on the requirements that you specified, which seem to be a bit strange):
var test = "name.surname#xxxx.eu";
var name = test.Substring(0, test.IndexOf('#')).Replace(".", " ");
Might want to add exception handling, of course.

You can use String.split():
string email = "VINCENT.NAPOLITAIN#XXXX.EU";
string names = email.Split('#')[0];
string name = "";
string surname = "";
if (names.Contains('.'))
{
var nameSurname = names.Split('.');
name = nameSurname[0]; //
surname = nameSurname[1];
}

You can use Regex Pattern:
(.+)\.(.+)(?=\#)
Explanation:
(.+) - Matches any character in a group
\. - Matches (.) dot
(?=\#) - Exclude # character
Code:
var match = Regex.Match(email, pattern);
var name = match.Groups[1].Value;
var surname = match.Groups[2].Value;

One option is to find the index of the . and the index of the # and do substrings on that:
string email = "aa.bb#cc.dd";
int periodIndex = email.IndexOf('.');
int atIndex = email.IndexOf('#');
string firstName = email.Substring(0, periodIndex);
string lastName = email.Substring(periodIndex + 1, atIndex - periodIndex - 1);
An easier way is to use a regular expression that cuts out the names.
This one will do:
(.*?)\.(.*?)#(.*)
The first capture is the first name, the second capture is the last name.

I would just use split in order to do it:
var nameDOTsurname = Email1.Split('#'); // This would leave in nameDOTsurname[0] the name.surname and in nameDOTsurname[1] the XXX.whatever
var name = nameDOTsurname[0].Split('.')[0];
var surname = nameDOTsurname[0].Split('.')[1];

This will work if your email address format sticks to firstname.secondname#wherever...
here is the code that works for you...
string e = "VINCENT.NAPOLITAIN#XXXX.EU";
string firstname = e.Substring(0, e.IndexOf("."));
string secondname = s.Substring(s.IndexOf(".")+1, s.IndexOf("#")-s.IndexOf(".")-1);
It works for all your emails

Grab a part of text when it matches, get rid of the rest because it's useless

I have a text called
string path = "Default/abc/cde/css/";
I want to compare a text.
string compare = "abc";
I want a result
string result = "Default/abc";
The rest of the path /cde/css is useless.Is it possible to grab the desire result in asp.net c#. Thanks.

Is this what you looking for?:
string result = path.Substring(0, path.IndexOf(compare)+compare.Length);

Try this. This will loop through the different levels (assuming these are directory levels) until it matches the compare, and then exit the loop. This means that if there is a folder called abcd, this won't end the loop.
string path = "Default/abc/cde/css";
string compare = "abc";
string result = string.Empty;
foreach (string lvl in path.Split("/")) {
result += lvl + "/";
if (lvl == compare)
{
break;
}
}
if (result.Length>0)
{
result = result.substring(0, result.length-1);
}

string path = "Default/abc/cde/css/";
string answer = "";
string compare = "abc";
if (path.Contains(compare ))
{
answer = path.Substring(0, path.IndexOf(stringToMatch) + compare.Length);
}
Something like the above should work.

I suggest that if you meet questions of this kind in the future, you should try it yourself first.
string result = path.Contains(compare) ? path.Substring(0, (path.IndexOf(compare) + compare.Length)) : path;