Trying to remove a checkBox from a list of checkBoxes

Question

Hello,
I have a dictionary that has TKey equal to a Decimal and with TValue equal to a List<CheckBox>. I declare it like so:
Dictionary<Decimal, List<CheckBox>> entireCheckBoxList = new Dictionary<Decimal, List<CheckBox>>();
The reason for doing this is that I can pass it a NumericUpDown value (which only is in Decimal), then I can find any created CheckBox's that corespond to the NumericUpDown value. So let say I have my NumericUpDown equal to 1, when I click on the up
arrow, I pop-up a new form window that lets me enter data lets say folder name and file name. Then, when I click my save button, I create check boxes for a folder name and under that check box is a the file name but it is slightly indented to the right and
under it:
So the reason why I have a Decimal TKey is that when i pop up a new form to create checkBoxes, I can create as many check boxes as I want and only want to assign them to one number. So if I create 4 check Boxes in one form pop-up form, then I want the numberUpDown
value to only be increased by one when I save it and create them. 
So my main question is, when I click down on the numericUpDown arrow, I want to remove the index associated with the numericUpdown from both the control and this dictionary. I am able to remove from the dictionary like so:
entireCheckBoxList.Remove(numbericUpDownValue);
However now I want to remove from the control with something like this:
this.tabPage1.Controls.Remove(entireCheckBoxList[numbericUpDownValue]);
But I am receiving the following errors:
Error 1
The best overloaded method match for 'System.Windows.Forms.Control.ControlCollection.Remove(System.Windows.Forms.Control)' has some invalid arguments
Error 2
Argument 1: cannot convert from 'System.Collections.Generic.List<System.Windows.Forms.CheckBox>' to 'System.Windows.Forms.Control'.
All I want to do is remove the check boxes associated with the numericUpDown value from the control that correspond to the ones created and stored in my dictionary List<CheckBoxes>. I am just not sure how to do it.
Kind Regards.

Answer 1

Ok great thanks for this. 
I have just realized that if I can just remove the last item in the entireCheckBoxList dictionary added, then there is no reason for the numbericUpDownValue look up. I just need to remove the last item in this dictionary.
I have tried many things to get the last item in the dictionary but are all out of ideas.
Any clue?
I have done this:
var test = entireCheckBoxList.Last();
then since this gives me the last value, I have then looped through like so:
foreach (CheckBox item in test.Value)
Then to remove only the last items created, since they are done in pairs, i have done this:
count++;
if ((count == test.Value.Count - 1) || (count == test.Value.Count))
this.tabPage1.Controls.Remove(item);
else
if (!yourlist.Contains(item))
yourlist.Add(item);
entireCheckBoxList.Add(count, yourlist);
where count is an int declare above. So the final solution is this:
var test = entireCheckBoxList.Last();
int entireCheckBoxCount = entireCheckBoxList.Count;
List<CheckBox> yourlist = new List<CheckBox>();
int count = 0;
entireCheckBoxList.Clear();
foreach (CheckBox item in test.Value)
count++;
if ((count == test.Value.Count - 1) || (count == test.Value.Count))
this.tabPage1.Controls.Remove(item);
else
if (!yourlist.Contains(item))
yourlist.Add(item);
entireCheckBoxList.Add(count, yourlist);
What do you think?
Kind Regards.