Using ODBCLink/SE With ODBC Applications | ODBCLink/SE Reference Manual |
4.'Second allocate a connection handle rc = SQLAllocConnect(henv, hdbc) If rc <> SQL_SUCCESS Then
MsgBox ("SQLAllocConnect failed rc=" + Str(rc)) Call GetError
Call FreeEnv Exit Function End If
5.'Third allocate the connection and pass in the Connection string
rc = SQLDriverConnect(hdbc, Form1.hWnd, sDSNConnect, Len(sDSNConnect), outstr, 256, outlen, 3)
If rc <> SQL_SUCCESS Then
If rc = SQL_NO_DATA_FOUND Then Exit Function 'User cancelled dialogue
End If
Call GetError Call Freeconnect Call FreeEnv Exit Function End If
6.'After connecting, allocate a statement handle rc = SQLAllocStmt(hdbc, hstmt)
If rc <> SQL_SUCCESS Then Call GetError
Call Disconnect Exit Function End If
7.'Now call an SQL query to select your data
rc = SQLExecDirect("Select * from member.membership") If rc <> SQL_SUCCESS Then
Call GetError
MsgBox "Unable to connect to the Database Environment!", vbCritical Call Disconnect
Exit Function End If
End Function
8.Sub GetError()
Dim error_str As String * 256 Dim SQLState As String * 20 Dim outlen As Integer
Dim NativeError As Long Dim msg As String
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