Get all rows of specific class type into List

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I have class

public class testClass
{
    public int testClassID { get; set; }
    public int param1ID { get; set; }
    public int param2ID{ get; set; }
}

Then in controller I want to find all rows and put them into list but use specific param during find

List<testClass> Rows = _context.testClasses.Find(u => u.param2ID== param2ID).ToList();

After writing this I get error

cannot convert lambda expression of type 'object' because it's not a delegate type

You probalby mean Where:

List<testClass> Rows = _context.testClasses.Where(u => u.param2ID == param2ID).ToList();

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Find method returns an object and cannot be converted to List. This is what you need:

List<testClass> Rows = _context.testClasses.Where(u => u.param2ID == param2ID).ToList();

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Try this solution

List<testClass> _resp = _context.testClasses.Where(u => u.param2ID == u.param2ID).ToList();

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List (Java Platform SE 8 ), The List interface provides two methods to search for a specified object. presence of an ineligible element may throw an exception, or it may simply return false; Inserts all of the elements in the specified collection into this list at the first to last element); the runtime type of the returned array is that of the specified array. Returns a row object for the specified row of the rowset. Example. In the following example, all of the lines of code do the same thing: they return the 5 th row from the rowset (&ROWSET is a rowset object.) &ROW = GetRowset ().GetRow (5); &ROW = GetRowset () (5); &ROW = &ROWSET.GetRow (5); &ROW = &ROWSET (5);

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Comments
  • If that's this Find method then it expects a params object[] but you're passing a lambda to it, thus the error.
  • How are testClasses defined?
  • .Find() only returns one element, use .FindAll() or .Where()
  • Welcome to strong typed programming language ;)