C＃从左到右移动标签

Question

i'm wondering is there any solution to animate a label with a timer? I want the label2 to go slowly to the left until is hitting the label1 and when it's hitted, to go backward from where has started going to the left. I tried this, but when is hitting label1 it's stopping:

       label2.Location = new Point(label2.Location.X - 4, label2.Location.Y);

        if (label2.Location.X == label1.Location.Y)
        {
            label2.Location = new Point(label2.Location.X + 4, label2.Location.Y);
        }

Answer 1

You are comparing label2.Location.X == label1.Location.Y , which seems like a typo.

You need a direction variable and you need to store the original position of Label2 so it knows where to go to:

label2.Location = new Point(label2.Location.X + step, label2.Location.Y);
if (label2.Location.X <= label1.Location.X) {
  step = 4;
} else if (label2.Location.X >= originalX) {
  step = -4;
}

To setup your variables:

int step = -4;
int originalX;

and then use the Load override method to set the originalX value:

protected override void OnLoad(EventArgs e) {
  base.OnLoad(e);
  originalX = label2.Location.X;
}

Answer 2

I think you are moving always left. Shouldn't you be using a variable to keep track of the direction you want to move.

In that sense, you need to check when you've reached the right margin to change direction again.