Excel - A macro copy to cell based on a specific criteria

Issue

I'm stuck. I hope someone can help me out today. I have an excel spreadsheet with 1400 rows. The first 3 rows are irrelevant (headings). I have 3 cells with $tring content (B:C:D). What I need to do is create a macro that can specifically look in column B and column D for non-null values. There are multiple cells in this spreadsheet that must have the same value. Column B and D must be compared, and must be found with non-null values. And, in the same instance where Column B is also found again (loop) (same cell content, but different row) Col D will have a null value (missing content). I need to fill this Col D with the same content as the first record that had Col B and D content. In my example the value is hard coded, I don't know how else to do it. I'm very lost and I need some help to complete this. This is what I have.

Sub _MacroUser10() Set I = Worksheets("Sheet2") Dim d Dim j d = 1 'loop counter j = 4 'start at the 4th row because of headings Do Until ActiveCell(I.Range("B" & j) = "User Portfolio Group") And ActiveCell(I.Range("D" & j <> null)) 'loop If I.Range("B" & j) = "User2010" Then 'the cell is entitled User2010tc If I.Range("D" & j) = " " Then 'this is supposed to find the null values in D d = d + 1 End If i.Rows(d).Value = I.Rows(j).Value End If j = j + 1 Loop End Sub

All in all. I need to lookup the content in Cell B$ and lookup the content in Cell D$. There will be one row with content in both places. Then I need to find all the other matching rows that match B$ that do not have any values in D$. I need to add those missing values from the non-null D$ to the null D$.

Solution

If the case is always that the filled row will occur before blank one , then you can use dictionary object. For that

Loop through your first row till the end

If both cells are not empty, combine the value of B and D as key and value of C as value .

As you go through rows, first check if that key is in the dictionary, if yes, you have the value else add to the dictionary

' to create dic object Set dicMyDic = CreateObect("Scripting.Dictionary") 'this is how key can be strKey = B1 & "|" & D1 'check if value of D is blank or not ' to add the value to dic IF Not (dicMyDic.Exists(strKey )) then dicMyDic.Add Key:=strKey, Item:=val 'to get the value from dic IF (dicMyDic.Exists(strKey )) then val = dicMyDic(strKey)

Thanks to rizvisa1 for this tip.