Excel VBA - Find and Fill in Values [duplicate]

This question already has an answer here:

Filling any empty cells with the value above 5 answers

Sorry for the noobish question, but I'm new and I don't have much of a programming background. I tried this on my own for a few hours, but I just don't know enough. I checked this and this, but I couldn't figure out how to modify it enough.

Example data:

The first part is how I get the file, the 2nd part is how I want it to look.

The first 3 columns have values somewhere in the column. I need to find those values, copy them, and paste them down to the next value, then repeat all the way to the bottom of the range. Sometimes there are many values per column, sometimes only 1. The last row of the data could be determined by column 4. Basically I just need to fill in all the blank cells. Note: Row 2 does not always contain the first value.

Here's what I have so far (update):

Sub FindFillIn()

    Dim columnValues  As Range, i As Long
    Dim cellstart As Integer
    Dim cellend As Integer
    cellstart = 2
    cellend = ActiveSheet.Range("E" & ActiveSheet.Rows.Count).End(xlUp).Row

    i = 1

    For i = cellstart To cellend
        If Cells(i, 1).Value = "" Then
            Cells(i, 1).Value = Cells(i - 1, 1).Value
        End If
    Next i

End Sub

Update:

It appears to run correctly on the first column, but it only does one column. How do I get it to run on columns 1, 2, and 3?

回答1:

Sub FillInBlanks()

    Dim rng As Range

    On Error Resume Next
    With ActiveSheet
        Set rng = .Range(.Range("A2"), _
         .Cells(Rows.Count, 4).End(xlUp)).SpecialCells(xlCellTypeBlanks)
    End With
    On Error GoTo 0

    If Not rng Is Nothing Then
        With rng
            .FormulaR1C1 = "=R[-1]C"
            .Value = .Value
        End With
    End If


End Sub

回答2:

This is easy without using VB. Select the data of column 1 until the last cell where you want to fill with the data. Press CTRL+G and click on Special. Select Blank and press OK. Now, on the formula bar, type "=" and select (pressing Ctrl+Click) the first Cell where the data start and then Control + Enter.

You can record this process to a macro and then view the code.