How can I sort my my first two columns A-Z?

Question

I'm trying to sort Columns that contain letters and numbers. I want to sort the Column AZ, I've tried reading up on some functions and attempting to get it to sort however I'm getting this error:

Private Function Sort2()
    Set HSheet = ThisWorkbook.Sheets("Building Parts")
    HBLR = HSheet.Range("A" & Rows.Count).End(xlUp).Row
    Worksheets("Building Parts").Activate

    With Range(Columns("A"), Columns("I"))
        .Sort key1:=Columns("A"), Order1:=xlDescending, Header:=xlNo
        .Sort key1:=Columns("B"), Order1:=xlDescending, Header:=xlNo
    End With
End Function

Mock Data:

Answer 1

Writing code from my comment as an answer so it is more readable

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Using sort on individual columns across the same range will allow sorting xlAscending for each column, with the final sort providing the final AZ:

Mock Data:

Col 1      Col 2
A          1
A          3
B          1
C          1
A          2

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If you want Col1 to have primary hierarchy, it is sorted last, so:

With Range(Columns(1), Columns(2))
    .Sort key1:=.Columns(2), order1:=xlAscending, Header:=xlYes
    .Sort key1:=.Columns(1), order1:=xlAscending, Header:=xlYes
End With

The above code is essentially:

.Range(.Columns(1), .Columns(2)).Sort key1:=.Columns(1), order1:=xlAscending, key2:=.Columns(2), order2:=xlAscending, Header:=xlYes

The single line approach has the highest priority as key1 , second highest as key2 , etc.

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Output after code runs would be:

Col 1      Col 2
A          1
A          2
A          3
B          1
C          1

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Edit (after accept):

I went back and added soem missing dot notation, found in the key1:=.Columns(1) ... unqualified references will lead to problems.