I'm sorry I didn't understand what you were trying to accomplish yesterday. Thanks for re-explaining the problem.
I didn't realize that you had put your labels on the form already...I thought that you were trying to dynamically create them and place them on the form.
Anyways, I'm not very familiar with Win Form projects but you should be able to loop through all of the child controls and use the Type Of or GetType methods to determine what the control is.
For example, if all of your controls were in a
Panel, you could loop through the Panel.Controls property, check if the control is a Label, and if it is, add it to your list of labels.
There's probably a way to do this for the whole window/form too but I'm not sure of the properties (it's probably a Controls property too).
You could even use LINQ to select all of the labels from the Controls property if you want.
-Frinny