How to concatenate cells in a row until the first blank cell - vba

Question

I'm currently diving into code/VBA coding for the first time. I have a file that I dump into a worksheet that currently I'm manually organizing and pushing out. When put into the worksheet, it delimits itself across the cells. The first 2-4 cells are always parts of a name. This dump file will have varying row and column lengths every time I get it in a given day and dump into a work sheet. For example, one day it may be twenty rows and one day it may be thirty.
This is a rough illustration of what the data looks like, but my code probably doesn't match with the example below - I just wanted to provide a visual:
So, I'm wanting to make code that will start at A1 and concatenate the cells following it until it runs into a blank cell in that row. Then it places the concatenated data into cell A1 and removes the values it pulled the name pieces from and slides all the data to the left. After that, it continues the same operation on the next row until it meets the final row. As you can see in the image, I don't want any of the data after the blank cell to be affected.
This is my first time programming in general, so when you provide assistance, would you please explain your code so I can learn the concepts? Here's what I think will work so far... I'm just stuck on how to go about concatenating.
The code I currently have:
Sub DN_ERROR_ORGANIZER()
Dim row As Integer
NumRows = Range("A1", Range("A1").End(xldown)).Rows.Count
Range("A1").Select
For row = 1 To NumRows
Do Until IsEmpty(ActiveCell)
' Code to concatenate
ActiveCell.Offset(1, 0).Select
Loop
ActiveCell.Offset(1, 0).Select
Next
End sub

Answer 1

Here's another way to look at your problem: Suppose you have your table on Sheet2, and the result is reflected on Sheet1.
Sub PutInOrder()
filledcells = 0
'''lastrow = Sheet2.Cells(Rows.Count, 1).End(xlUp).Row
For i = 1 To 100
If Sheet2.Cells(i, 1) = "" Then Exit For
For a = 1 To 4
If Sheet2.Cells(i, a) = "" Then Exit For
If Sheet2.Cells(i, a) <> "" Then
filledcells = filledcells + 1
End If
Next
Select Case filledcells
Case Is = 2
Sheet1.Cells(i, 1) = Sheet2.Cells(i, 1) + ", " + Sheet2.Cells(i, 2)
Sheet1.Cells(i, 3) = Sheet2.Cells(i, 4)
Sheet1.Cells(i, 4) = Sheet2.Cells(i, 5)
Sheet1.Cells(i, 5) = Sheet2.Cells(i, 6)
Sheet1.Cells(i, 6) = Sheet2.Cells(i, 7)
Case Is = 3
Sheet1.Cells(i, 1) = Sheet2.Cells(i, 1) + ", " + Sheet2.Cells(i, 2) + " " + Sheet2.Cells(i, 3)
Sheet1.Cells(i, 3) = Sheet2.Cells(i, 5)
Sheet1.Cells(i, 4) = Sheet2.Cells(i, 6)
Sheet1.Cells(i, 5) = Sheet2.Cells(i, 7)
Sheet1.Cells(i, 6) = Sheet2.Cells(i, 8)
Case Is = 4
Sheet1.Cells(i, 1) = Sheet2.Cells(i, 1) + ", " + Sheet2.Cells(i, 2) + " " + Sheet2.Cells(i, 3) + " " + Sheet2.Cells(i, 4)
Sheet1.Cells(i, 3) = Sheet2.Cells(i, 6)
Sheet1.Cells(i, 4) = Sheet2.Cells(i, 7)
Sheet1.Cells(i, 5) = Sheet2.Cells(i, 8)
Sheet1.Cells(i, 6) = Sheet2.Cells(i, 9)
End Select
filledcells = 0
Next
End Sub

Answer 2

Can you try this and let me know how you get on? It may need some tweaks depending on your precise layout. My approach is slightly different.
Sub x()
Dim n As Long, r1 As Range, r2 As Range, v
For n = 1 To Range("A" & Rows.Count).End(xlUp).Row
On Error Resume Next
Set r1 = Cells(n, 1).EntireRow.SpecialCells(xlCellTypeConstants).Areas(1)
Set r2 = Cells(n, 1).EntireRow.SpecialCells(xlCellTypeConstants).Areas(2)
If Not r1 Is Nothing And Not r2 Is Nothing Then
v = Join(Application.Transpose(Application.Transpose(r1)), ", ")
Cells(n, 1) = WorksheetFunction.Proper(v)
Cells(n, 2).Resize(, r1.Count).Clear
r2.Cut Cells(n, 3)
End If
Next n
End Sub