how to get random amount of details from a list or var in c#

Question

I'm reading result from an json file inside the local project.it returns more than 4000 result.I want to get only random number of results (between 500- 1000) from that result.

 var finalResultz = finalResults("All","All","All");//step one

in here it returns more than 4000 results.then I put into a list like this.

List<Results> searchOne = new List<Results>();//step two
foreach(var itms in finalResultz)
{
    searchOne.Add(new Results 
    {
        resultDestination = returnRegionName(itms.areaDestination),
        mainImageurl = itms.testingImageUrl
     });
 }
    
 ViewBag.requested = searchOne;

but I want to get only the results like I said.I want to resize the count in step one or in step two.how can I do that.hope your help.

Answer 1

You can use Random class and Take() method to extract N elements.

// create new instance of random class
Random rnd = new Random(); 

// get number of elements that will be retrieved from 500 to 1000
var elementsCount = rnd.Next(500, 1000);

// order source collection by random numbers and then take N elements: 
var searchOne = finalResultz.OrderBy(x => rnd.Next()).Take(elementsCount);