Excel sheet: Copy data from one workbook to another workbook - vba

Question

I am not able to copy data from one workbook to another. But with in same workbook its working. After running the macro program the destination worksheet is empty. I have 2 codes. Both are not working. My source file is .xlsx format and destination file is .xlsm format. Is there any mistakes?
Code1:
Sub mycode()
Workbooks.Open Filename:="source_file"
Worksheets("Sheet1").Cells.Select
Selection.Copy
Workbooks.Open Filename:="destination_file"
Worksheets("Sheet1").Cells.Select
Selection.PasteSpecial
ActiveWorkbook.Save
End Sub
Code 2
Sub foo2()
Dim x As Workbook
Dim y As Workbook
Set x = Workbooks.Open("source file")
Set y = Workbooks.Open("destination file")
y.Sheets("Sheet1").Range("A1").Value = x.Sheets("Sheet1").Range("A1")
x.Close
End Sub

Answer 1

I assume that you are writing below Code1 and Code2 excel macros in a separate file, say copy_paste.xlsm:
Code 1 is working when you provide a full path of files to Workbooks.open:
Sub mycode()
Workbooks.Open Filename:="C:\Users\xyz\Documents\Excel-Problem\source_file.xlsx"
Worksheets("Sheet1").Cells.Select
Selection.Copy
Workbooks.Open Filename:="C:\Users\xyz\Documents\Excel-Problem\destination_file.xlsm"
Worksheets("Sheet1").Cells.Select
Selection.PasteSpecial xlPasteValues 'xlPasteAll to paste everything
ActiveWorkbook.Save
ActiveWorkbook.Close SaveChanges:=True 'to close the file
Workbooks("source_file").Close SaveChanges:=False 'to close the file
End Sub
To paste everything (formulas + values + formats), use paste type as xlPasteAll.
Code 2 is working too, all you need is to provide full path and you are missing _ in file names:
Sub foo2()
Dim x As Workbook
Dim y As Workbook
Set x = Workbooks.Open("C:\Users\xyz\Documents\Excel-Problem\source_file.xlsx")
Set y = Workbooks.Open("C:\Users\xyz\Documents\Excel-Problem\destination_file.xlsm")
'it copies only Range("A1") i.e. single cell
y.Sheets("Sheet1").Range("A1").Value = x.Sheets("Sheet1").Range("A1")
x.Close SaveChanges:=False
y.Close SaveChanges:=True
End Sub

Answer 2

edited to add a (minimum) file check
you must specify full file path, name and extension
more over you can open only destination file, like this
Option Explicit
Sub foo2()
Dim y As Workbook
Dim sourcePath As String, sourceFile As String, destFullPath As String '<--| not necessary, but useful not to clutter statements
sourcePath = "C:\Users\xyz\Documents\Excel-Problem\" '<--| specify your source file path down to the last backslash and with no source file name
sourceFile = "source_file.xlsx" '<--| specify your source file name only, with its extension
destFullPath = "C:\Users\xyz\Documents\Excel-Problem\destination_file.xlsm" '<--| specify your destination file FULL path
If Dir(destFullPath) = "" Then '<--| check is such a file actually exists
MsgBox "File " & vbCrLf & vbCrLf & destFullPath & vbCrLf & vbCrLf & "is not there!" & vbCrLf & vbCrLf & vbCrLf & "The macro stops!", vbCritical
Else
Set y = Workbooks.Open(destFullPath)
With y.Sheets("Sheet1").Range("A1")
.Formula = "='" & sourcePath & "[" & sourceFile & "]Sheet1'!$A$1"
.Value = .Value
End With
y.Close SaveChanges:=True
End If
End Sub
you could even open neither of them using Excel4macro