VB6 ADO INSERT of TEXT field into .MDB

My example VB6 program:

Dim conn As New connection
conn.Open "Driver={Microsoft Access Driver (*.mdb)};Dbq=" & App.Path & "\adatabase.mdb;"
conn.Execute "INSERT INTO atable (afield) VALUES (""some text"")"
End Sub

("adatabase.mdb" contains one table "atable" with one field "afield" of type "Text" length 255. Access 2002, Access file format 2000. VB6 references include "Microsoft ActiveX Data Objects 2.8 Library".)

conn.Execute gets:

Runtime error '-2147217904 (80040e10' [Microsoft][ODBC Acces开发者_如何学Gos Driver] Too few parameters. Expected 1.

The query

INSERT INTO atable (afield) VALUES ("some text")

runs directly in Access without any problem.

Shouldn't that be:

conn.Execute "INSERT INTO atable (afield) VALUES ("""some text""")"

i.e. you need to quote the double quotes?

Update: or as the poster solved, use single quotes to quote text.

Or even better, use a parameterised query:

Dim Conn1 As ADODB.Connection
Dim Cmd1 As ADODB.Command
Dim Param1 As ADODB.Parameter
Dim Rs1 As ADODB.Recordset

' Create and Open Connection Object.
Set Conn1 = New ADODB.Connection
Conn1.ConnectionString = "DSN=Biblio;UID=admin;PWD=;"
Conn1.Open

' Create Command Object.
Set Cmd1 = New ADODB.Command
Cmd1.ActiveConnection = Conn1
Cmd1.CommandText = "SELECT * FROM Authors WHERE AU_ID < ?"

' Create Parameter Object.
Set Param1 = Cmd1.CreateParameter(, adInteger, adParamInput, 5)
Param1.Value = 5
Cmd1.Parameters.Append Param1
Set Param1 = Nothing

' Open Recordset Object.
Set Rs1 = Cmd1.Execute()