比较时如何获取变量？

Question

I have a windows form and a simple horce racing application. My horses are pictureBox controls. I want to print the winner by checking who is more far away from starting point.

    control aa.left = (unknown integer value);
    control bb.left = (unknown integer value);
    control cc.left = (unknown integer value);

• If first one has the biggest value, I want to print "First one is champion"
• If second one has the biggest value, I want to print"Second one is champion"
• If third one has the biggest value, I want to print "Third one is champion"

Is there an easy way to do this other then creating an if structure - "check aa with bb, aa with cc, bb with cc"

In other words, how to get the variable with biggest left property.

Answer 1

Sure, just do this:

pseudocode:

let biggest = aa
if (bb.left > biggest.left)
    biggest = bb
if (cc.left > biggest.left)
    biggest = cc

print(biggest.name + " is the champion)

If you have a lot more, then u can use an array

ie.

arrayOfBoxes = [aa, bb, cc]
let biggest = arrayOfBoxes[0]
for each box in arrayOfBoxes
    if (box.left > biggest.left)
        biggest = box
print(biggest.name + " is the champion)

Answer 2

Another way you could do it is grab the controls that you care about into a list:

var horses = Controls.Cast<Control>()
    .Where(c => c.Name == "aa" || c.Name == "bb" || c.Name == "cc");

If you have a lot of controls that represent horses, it might be easier to give them all some common Tag value, so you can search on just that field:

var horses = Controls.Cast<Control>().Where(c => c.Tag.ToString() == "horse");

Then you can find the winning horse by getting the Name of the control (or the Text , or whichever property you store the identifier that the user would understand) whose Left property is the Max :

var winner = horses.First(l => l.Left == horses.Max(h => h.Left)).Name;
MessageBox.Show($"The winner is: {winner}!");