DataGrid problem

I would like to export my data in DataGrid to excel. It could be sent to excel but there are errors on rows.

I would also like to know how to export the column headers to excel along.

VB Code:

Private Sub cmdExport_Click()
    Dim objExcel As Excel.Application
    Dim objWorkbook As Excel.Workbook
    Dim i As Long
    Dim n As Long
On Error Resume Next
    Set objExcel = GetObject(, "Excel.Application")
If Err.Number Then
   Err.Clear
   Set objExcel = CreateObject("Excel.Application")
   If Err.Number Then
      MsgBox "Can't open Excel."
   End If
End If
objExcel.Visible = True
Set objWorkbook = objExcel.Workbooks.Add
AppActivate "DataGrid To Excel Demo"
 
    For i = 0 To DataGrid1.Row.Count -1 <======= Error here
        DataGrid1.Row = i
    For n = 0 To DataGrid1.Columns.Count - 1
        DataGrid1.Col = n
        objWorkbook.ActiveSheet.Cells(i + 1, n + 1).Value = DataGrid1.Text
    Next
    Next
End Sub