How to count the occurence of the text file

Question

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XML

<Books Type="Science">

</Books>

<Books Type="Story"> 

</Books>

<Books Type="History">

</Books>

This is a sample text file.
Here I want to count the number of occurrence of the nodes such as Type="Science" ,"Story".

How to do using text reading from txt file

Posted 26-Mar-14 7:38am

KUMAR619

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[no name] 26-Mar-14 14:02pm

In addition to the solutions presented here, here could also just refer back to the answers you already have to the same question already asked by you.

4 solutions

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Raul Iloc · Accepted Answer · 2014-03-26T07:58:00

You should use XPATH for doing this (you could search on MSDN or Google about XPATH):

C#

string expresion= "/Books[@Type='Science' or @Type='Story']"; //XPATH expression!

XmlDocument xml = new XmlDocument();
xml.LoadXml(filePath); //Your file path!
XmlNodeList nodeList = xml.SelectNodes(expresion);
int n = nodeList.Count;

Kumar_Jitendra · Accepted Answer · 2014-03-26T11:15:00

You can use below code:

C#

XDocument doc = XDocument.Load(@"C:\XMLFile1.xml");
var query = from ele in doc.Descendants("Books")
            where ele.Attribute("Type").Value == "Science"
            select ele;
Console.WriteLine( query.Count());
Console.Read();

This should solve your problem.

Thanks

Matt T Heffron · Accepted Answer · 2014-03-26T08:03:00

Solution 3

Since this looks like XML, I'd suggest using the XML reading and analysis capabilities already present in .NET.
Look at
LINQ to XML[^]
and
System.Xml.Linq namespace[^]

Posted 26-Mar-14 8:03am

Matt T Heffron

norbitrial · Accepted Answer · 2014-03-26T07:59:00

Solution 2

You can do it with linq for example:

C#

//first read the text file into a string
string text = //;

string searchTerm1 = "Type=\"Story\"",
       searchTerm2 = "Type=\"Story\"";

//here is the linq query
var matchQuery = from i in text
                 where i.ToLowerInvariant() == searchTerm1.ToLowerInvariant() || 
                       i.ToLowerInvariant() == searchTerm2.ToLowerInvariant()
                 select i;

int count = matchQuery.Count();

Posted 26-Mar-14 7:59am

norbitrial

Updated 26-Mar-14 8:17am

v2

Comments

Matt T Heffron 26-Mar-14 14:06pm

This approach ignores the structure of the text.
It will count occurrences of "Science" or "Story" anywhere in the file, not just in the context of the Type="..." attributes.

norbitrial 26-Mar-14 14:18pm

Then you can use I've improved my solution. I've changed the values of the searchTerm1 and the searchTerm2 variables.

Matt T Heffron 26-Mar-14 15:15pm

A couple more comments:
If the file really is XML then a case-insensitive comparison probably is wrong, at least in part, as XML is case-sensitive.
I still think this is the wrong approach in general.
If dealing with XML text, then treating it as XML is the better strategy. The code will make more sense in the context of the specific problem.
The implementation will be impedance-matched to the problem.
The vocabulary with which the implementation addresses the problem will be the correct vocabulary of the problem domain.

norbitrial 27-Mar-14 4:18am

I'm completely agree with you, that looks the best strategy for XMLs. I just thought it is a simple text file and not an XML.

How to count the occurence of the text file

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