split the string to get count of ids ?

Question

0.00/5 (No votes)

See more:

Hi ,

I have one string variable which contains

120, 130, 134, 138, 151, 3810

i just want to get distinct id count .

Please suggest

Posted 13-May-15 20:19pm

Torakami

Add a Solution

2 solutions

Solution 2

Convert the string into an array or List<string> using string.Split(variable,',')
Make sure you trim the spaces.
You can then use Linq to select distinct.

Posted 13-May-15 20:39pm

Mycroft Holmes

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Maciej Los · Accepted Answer · 2015-05-13T20:31:00

Solution 1

Try this:

C#

string s = "120, 130, 134, 138, 151, 3810";
 
var qry = s.Split(',')
        .Select(a=>Convert.ToInt32(a.Trim()))
		.GroupBy(a=>a)
		.Select(grp=>new
			{
				value = grp.Key,
				count = grp.Count()
			});

Result:

value count
120   1
130   1
134   1
138   1
151   1
3810  1

[EDIT]

C#

var qry = s.Split(',')
        .Select(a=>Convert.ToInt32(a.Trim()))
        .Distinct()
        .Count();
//returs: 6

[EDIT2]
According to OP comments:

C#

List<string> s = new List<string>()
        {
            "120, 130, 134, 138, 151, 3810",
            null,
            "120, 130, 134, 202, 1151, 3810"
        };

var qry = s.SelectMany(a=>(a ?? string.Empty).Split(new char[]{',', ' '}, StringSplitOptions.RemoveEmptyEntries))
        .Distinct()
        .Count();
//returns: 8

Posted 13-May-15 20:31pm

Maciej Los

Updated 13-May-15 22:38pm

v4

Comments

Torakami 14-May-15 2:41am

I want total count of how many ids are available , but the total count should not add duplicate records

Maciej Los 14-May-15 2:44am

See updated answer.

Torakami 14-May-15 3:31am

thanks . but there is slight issue i am facing , how to get disctinct if multiple items gets added

objObjectives = new ActusLibrary.Objectives();
{
objObjectives.DepartmentName = item.DepartmentName;
objObjectives.TotalLive = item.Live_Total;
objObjectives.TotalDraft = item.Draft_Total;
objObjectives.TotalCompleted = item.Completed_Total;
objObjectives.TotalEmployees = item.Live_EmpIDs.Split(',').Select(a => string.IsNullOrEmpty(a) ? 0 : Convert.ToInt32(a.Trim())).Distinct().Count() +
item.Draft_EmpIDs.Split(',').Select(a => string.IsNullOrEmpty(a) ? 0 : Convert.ToInt32(a.Trim())).Distinct().Count() +
item.Completed_EmpIDs.Split(',').Select(a => string.IsNullOrEmpty(a) ? 0 : Convert.ToInt32(a.Trim())).Distinct().Count();
}
live draft and completed merging should be distinct employee count

Maciej Los 14-May-15 3:40am

Sorry, but i do not see your data and can't read direct from your screen ;(
You have to provide more information if you want my help. On this piece of code i can only guess, that you have extra values, becasue of null replacement with zero: string.IsNullOrEmpty(a) ? 0 . Try:

item.Live_EmpIDs.Split(',').Distinct().Count() + item.Draft_EmpIDs.Split(',').Distinct().Count() + item.Completed_EmpIDs.Split(',').Distinct().Count();

or
item.ResultSet.Split(',').Where(a=>a ?? 0 != 0).Distinct().Count() where ResultSet is one of xxx_EmpIDs collection.

Maciej Los 14-May-15 4:38am

See updated answer.

_Asif_ 14-May-15 3:12am

+5

Maciej Los 14-May-15 3:27am

Thank you, Asif.

Thomas Daniels 14-May-15 4:45am

+5!

Maciej Los 14-May-15 4:48am

Thank you.