Put entire column (each value in column) in an array?

Question

So i\'m making a macro to do a bunch of things. one thing is find duplicates of cells in sheet1 from sheet2. given columnA in sheet 1, do any values in columnB on sheet2 mat

Answer 1

Here are three different ways to load items into an array. The first method is much faster but simply stores everything in the column. You have to be careful with this though because it creates a multidimensional array which isn't something that can be passed to AutoFilter.

Method 1:

Sub LoadArray()
    Dim strArray As Variant
    Dim TotalRows As Long

    TotalRows = Rows(Rows.Count).End(xlUp).Row
    strArray = Range(Cells(1, 1), Cells(TotalRows, 1)).Value

    MsgBox "Loaded " & UBound(strArray) & " items!"
End Sub

Method 2:

Sub LoadArray2()
    Dim strArray() As String
    Dim TotalRows As Long
    Dim i As Long

    TotalRows = Rows(Rows.Count).End(xlUp).Row
    ReDim strArray(1 To TotalRows)

    For i = 1 To TotalRows
        strArray(i) = Cells(i, 1).Value
    Next

    MsgBox "Loaded " & UBound(strArray) & " items!"
End Sub

if you know the values ahead of time and just want to list them in a variable you can assign a variant using Array()

Sub LoadArray3()
    Dim strArray As Variant

    strArray = Array("Value1", "Value2", "Value3", "Value4")

    MsgBox "Loaded " & UBound(strArray) + 1 & " items!"
End Sub