Returning FALSE when using multiple THEN statements - excel

Question

I have a macro that has conditional statements in. It works perfectly if I take out the second statement of coloring the cell with the error message. Instead when I add the color to the cell I am returned with a FALSE statement in my column.
It works perfectly here:
Sub trantype()
Dim cell As Range
Dim lastRow As Long
Sheets("1099-Misc_Form_Template").Select
lastRow = Range("B" & Rows.Count).End(xlUp).row
For Each cell In Range("C2:" & "C" & lastRow)
If cell.Value <> "C" And cell.Value <> "" Then cell.Offset(0, -2).Value = cell.Offset(0, -2).Value & ", Tran type error"
Next
End Sub
But when I add the second condition I am returned with a FALSE statement:
Dim cell As Range
Dim lastRow As Long
Sheets("1099-Misc_Form_Template").Select
lastRow = Range("B" & Rows.Count).End(xlUp).row
For Each cell In Range("C2:" & "C" & lastRow)
If cell.Value <> "C" And cell.Value <> "" Then cell.Offset(0, -2).Value = cell.Offset(0, -2).Value & ", Tran type error" & cell.Interior.ColorIndex = 37
Next
End Sub
I would like both conditions to be met, so the error message is printed in the offset cell and the cell with the error in to have color.

Answer 1

Put each command into its own row. The & ampersand is a text concatenation operator. It cannot be used to chain commands.
For Each cell In Range("C2:" & "C" & lastRow)
If cell.Value <> "C" And cell.Value <> "" Then
cell.Offset(0, -2).Value = cell.Offset(0, -2).Value & ", Tran type error"
cell.Interior.ColorIndex = 37
End If
Next
This way you need to use the End If statement, so don't forget that.