Listbox excel vba

Question

I have two columns a sheet. 'Year' and 'Make'. I am trying to design a userform with two combobox for year and make. Every time I run the macro, I want the combobox 'year' to have one instance of every year from the 'year' column. say ther are 10 instances of 2014, 20 instances of 2015 and 30 od 2016. I need to have one instance of all three years. The number of unique years may vary. Is there a way I could do this?

If I use data validation, I get all thee instances. I just want it to appear once. Please help me out. Either data validation or the combobox method is fine for me. I just need to have a place where we can select one 'year' from the available years.

Answer 1

This is my idea of using a Pivot Table .
Select your Year column and make a table out of it.
Then summarize it using Pivot Table . Place it in Report Filter Field and you have your dropdown.

Another none VBA way is to use a helper column where it only outputs the unique values as discussed HERE .

Using this formula: (credit's to Oscar)

=IFERROR(INDEX(Table1[Year],MATCH(MIN(IF(COUNTIF($C$1:C1,Table1[Year])=0,1,MAX((COUNTIF(Table1[Year],"<"&Table1[Year])+1)*2))*(COUNTIF(Table1[Year],"<"&Table1[Year])+1)),COUNTIF(Table1[Year],"<"&Table1[Year])+1,0)),"")

And entering it using Ctrl + Shift + Enter .
Take note that we used the table we just created.

After that, create a named range out of it.

And finally, you create the validation:

If you still need VBA, yes it can be done in various ways.
But before that, gauge if any of the two ways above will work for you. HTH.