How to find the matching item of List which belongs to a string.

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1.00/5 (1 vote)

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.NET3.5

I have a List of Item named "FunctionList" and also have a string named "mainString"?

I want to find the matching item one by one from "FunctionList" which belongs to "mainString".

The output will be like

C#

var matchItem= "check each item into string belongs to string or not";

Here matchItem will be the item from List belongs to string also. Please help me to find out the code for this solution using C# or LINQ.

Posted 29-Apr-15 3:20am

sachi Dash

Updated 29-Apr-15 4:42am

Sergey Alexandrovich Kryukov

v2

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CHill60 29-Apr-15 9:30am

Is this the same as your question How can I split string with expected parenthesis ?[^]?
If not then this does not make it clear what your problem is.
If it is the same question then I've already answered it.

sachi Dash 30-Apr-15 1:03am

This is another question. Thanks for the reply.

Sergey Alexandrovich Kryukov 29-Apr-15 10:43am

Off-topic. Surprised? I'll explain: software engineering is NOT "finding out the code".
—SA

2 solutions

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Andy Lanng · Answer 1 · 2015-04-29T06:23:00

Ok - I think I get what you're asking

You have a List<item> FunctionList and a \s separated string of terms.

You want to find the matching FunctionList item for each term in the string.

I imagine that some part of the FunctionList is a string that matches the term?

If this is not correct then please comment and I will update or remove my answer!

C#

//first, break your terms into an array

string[] terms = mainString.split(' '); // you can get rid of double spaces before or parse for empty strings after if your mainString has dirty data

foreach(string term in terms)
{
    //if the FunctionList is a List<string>
    if(functionList.Contains(term)){}
    //but I doubt that it is

    //using linq:
    var items = functionList.Where(f=>f.Name==term); //guessing there's a string field - calling it name
    if(!items.Any()){continue; // No Match}
    else if(items.Count()>1) {break; //multiple matches}
    else{
        //Exactly 1 match
        Item item = items.Single();
          item.DoSomething();
    }

    //using a second loop
    foreach(Item item in FunctionList){
        if(item.Name = term)
        {
             item.DoSomething();
             //exit this loop after first match?
             break;
        }
        //You can handle multiple / no match issues if you need to
        //This is just a basic example
    }
}

Maciej Los · Answer 2 · 2015-04-29T08:24:00

Solution 2

I'm not sure i understand you well, but... if you want to find matches, try this:

C#

List<string> FunctionList = new List<string>(){"bla","ble","bli","blo"};
string mainString = "bli";

var matches = FunctionList.Where(a=>a==mainString);
//or
//var matches = FunctionList.Where(a=>a.Contains(mainString));
foreach(var m in matches)
{
    Console.WriteLine("{0}", m);
}

For further information, please see:
Enumerable.Contains<tsource> Method (IEnumerable<tsource>, TSource)[^]
101 LINQ Samples[^]

Posted 29-Apr-15 8:24am

Maciej Los

Updated 30-Apr-15 0:08am

v2

Comments

sachi Dash 30-Apr-15 6:06am

You got it. Then how can I separate value from matches?

Maciej Los 30-Apr-15 6:08am

You need to loop through the matches. See updated answer.

sachi Dash 30-Apr-15 6:32am

Sorry it doesn't show anything ! I used this code.
foreach (var m in matches)
{
MessageBox.Show(m.ToString());
}

Maciej Los 30-Apr-15 6:41am

???