"Application Defined or Object Defined" error in VBA-SQL connection - sql-server

Question

I am trying to write an Exce-Vba code for SQL connection. The code, first will open the connection to the server, then it will copy a 4 columns of table (Range("C22:G81")) from my Excel-sheet to the SQL-server (I am only trying to send numerical table now as a test, I don't send any column name)
I have been trying to solve a "Application Defined or Object Defined" error quite long time. I get the error for the connection string strCon = "Provider=Microsoft.ACE.OLEDB.12.0; Data Source=" & strName & ";Extended Properties=""Excel 12.0;"
I even tried with another version with password option like strCon = "Provider=Microsoft.ACE.OLEDB.12.0; Data Source=" & strName & ";Extended Properties=""Excel 12.0; Jet OLEDB:Database Password='passwd';"
But I get the same error. I am quite new in SQL-coding. I wonder if I am missing something important.
Lasly, I don't know if it is related to this error, but I manually created 4 columns in the SQL server for my 4 columns in the Excel. Do I need to write something specific that those 4 columns in the Excel-sheet will find the right columns in the SQL-server?
Thanks in advance...
The code:
Private Sub inlasning()
Dim MyWorkBook As Workbook
Dim rs As New ADODB.Recordset
Dim conn As New ADODB.Connection
Dim ServerName As String, DataBaseName As String, strSQL As String
Set conn = New ADODB.Connection
ServerName = "E45c7642"
DataBaseName = "Tables"
' Specify the OLE DB provider
conn.Provider = "sqloledb"
' Set SQLOLEDB connection properties
conn.Properties("Data Source").Value = ServerName
conn.Properties("Initial Catalog").Value = DataBaseName
' Windows NT authentication.
conn.Properties("Integrated Security").Value = "SSPI"
conn.Open
Dim ValidSheet As Worksheet
Dim HeaderRange As Range
Dim DataRange As Range
Dim ColRange As Range
Dim LastRange As Range
Dim strName As String, strCon As String
strName = ThisWorkbook.FullName
Application.ScreenUpdating = False
Set ValidSheet = ThisWorkbook.Sheets("Sheet2") '
Set HeaderRange = ValidSheet.Range("C20:G21")
Set ColRange = HeaderRange.Find(TheHeader, , , xlWhole)
Set LastRange = ColRange.End(xlDown)
Set DataRange = ValidSheet.Range("C22:G81") ' This is what I am trying to transfer, only numeric values without column names
strCon = "Provider=Microsoft.ACE.OLEDB.12.0; Data Source=" & strName _
& ";Extended Properties=""Excel 12.0;"
conn.Open strCon
strSQL = "SELECT * FROM [" & ValidSheet.Name & "$" & Replace(DataRange, "$", "") & "];"
rs.Open strSQL, dbclass, adOpenStatic, adLockReadOnly
arrData = rs.GetRows
rs.Close
conn.Close
Set rs = Nothing
Set conn= Nothing
Set ValidSheet = Nothing
End Sub
After getting the same error for the "connection string", I changed the strategy, and I used dbclass procedure to open a connection. So the new code is like below. (I found this coding from a guy, but he is on vacation now, so I can't ask him).
It gets connection (dbclass) properties automatically, which are saved in the main ThisWorkbook. This code doesn't give any error at all, but it doesn't copy the column from the Excel to the database. I tried different versions for the sql-query, like SQL = .... VALUES('result') or SQL = .... VALUES(result), but there is no result again, without error.
Private Sub Testing_Click()
Dim FindColValues() As Double
Dim ValidBook As Workbook
Dim ValidSheet As Worksheet
Dim DataRange As Range
Dim dataa As Range
Application.ScreenUpdating = False
TheSheet = "Sheet2"
Set ValidSheet = Worksheets(TheSheet)
Set DataRange = ValidSheet.Range("C21:C81")
' Below creating an array "result(it)" from the seleced range.
For Each dataa In DataRange
ReDim Preserve result(it)
result(it) = dataa.Value
it = it + 1
Next
' Below is just an alternative array for "in case"
arrData = ValidSheet.Range("C22:G81").Value
SQL = "INSERT INTO Table_test (Column1) VALUES ('result()');"
dbclass.ExecuteSQL SQL
End Sub
Below is dbclass connection properties which is read automatically by the other function:
Private Sub Workbook_Open()
Dim connOk As Boolean
Dim rs As New ADODB.Recordset
Dim MyWorkBook As Workbook
Dim CurSheet As Worksheet
Set dbclass = New clsDB
dbclass.Database = "Tables"
dbclass.ConnectionType = SqlServer
dbclass.DataSource = "E45c7642"
dbclass.UserId = Application.UserName
connOk = dbclass.OpenConnection(False, True)
If connOk = False Then
MsgBox "Cannot connect"
Else
MsgBox "The server is connected"
End If
End Sub

Answer 1

Finally I found the problem for my second code. As I wrote before, in my alternative code (second code), I didn't get any error at all in VBA, but it didn't save my table into the server.
Now I know the reason, because my real value was in "comma" format, but the server saved the value in "dot" format. So I added Str(value) to convert the "comma" value to the "dot" value, and it works now:
....
SQL = "INSERT INTO Table_test (Column1) VALUES (" & Str(result(1)) & ")"
dbclass.ExecuteSQL SQL
End Sub