C#

public static TheQFromDB CalculateMaxVal(IEnumerable<TheQFromDB> input)
{
    TheQFromDB result = null;
    
    foreach (var item in input)
    {
        if (result == null || item.SecondsDiff > result.SecondsDiff)
        {
            result = item;
        }
    }
    
    return result;
}

return result ?? new TheQFromDB();

private void DoIt(int x)
   {
   x = x * 2;
   Console.WriteLine(x);
   }
...
   int x = 100;
   Console.WriteLine(x);
   DoIt(x);
   Console.WriteLine(x);

100
200
100

private void DoIt(ref int x)
   {
   x = x * 2;
   Console.WriteLine(x);
   }
...
   int x = 100;
   Console.WriteLine(x);
   DoIt(ref x);
   Console.WriteLine(x);

100
200
200

private void DoIt(out int x)
   {
   x = x * 2;
   Console.WriteLine(x);
   }
...
   int x = 100;
   Console.WriteLine(out x);
   DoIt(out x);
   Console.WriteLine(x);

private void DoIt(out int x)
   {
   x = 200;
   Console.WriteLine(x);
   }
...
   int x = 100;
   Console.WriteLine(x);
   DoIt(out x);
   Console.WriteLine(x);

100
200
200

class Foo
{
    private string x1 = "Hello";
    private string x27 = "Hi";
    private string x99 = "Hey";
    
    public string GetValue(int i)
    {
        string name = "x" + i;
        FieldInfo field = typeof(Foo).GetField(name, BindingFlags.Instance | BindingFlags.NonPublic);
        if (field == null) throw new ArgumentException("Unknown index: " + i, nameof(i));
        return (string)field.GetValue(this);
    }
}

Dictionary<int, string> x = new Dictionary<int, string>
{
    [1] = "Hello",
    [27] = "Hi",
    [99] = "Hey",
};

int i = 27;
string value = x[i];

private string[] x = new string[100];
...
   x[1] = "Hello";
   x[27] = "Hi";
   x[99] = "Hey";
...
   MessageBox.Show(x[i]);

Dictionary<string,string> myFields = new Dictionary<string,string>();
myFields.Add("x1", "Hello");
myFields.Add("x27", "Hi");
myFields.Add("x99", "Hey");

string x1 = "x1";
string x27 = "x27";
string x99 = "x99";

MessageBox.Show(myFields[x1]);

string x1 = nameof(x1);
string x27 = nameof(x27);
string x99 = nameof(x99);

Dictionary<string,string> myFields = new Dictionary<string,string>();
myFields.Add(x1, "Hello");
myFields.Add(x27, "Hi");
myFields.Add(x99, "Hey");

MessageBox.Show(myFields[x1]);

Member 14122184 wrote:

Given me some ideas to start planning.