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(setq dbfile "f:\\tt1.mdb")
(setq *ConnectionObject*
(ADO_ConnectToDB
(strcat
"Provider=MSDASQL;Driver={Microsoft Access Driver (*.mdb)};DBQ="
dbfile)
"
"")
返回空..不知道哪里没写对,2006下正常..
(defun ADO_ConnectToDB (ConnectString UserName Password / IsUDL
FullUDLFileName ConnectionObject TempObject
ReturnValue ConnectionPropertiesObject
ConnectionParsingPropertyObject
)
;; Assume no error
(setq ADOLISP_ErrorList nil
ADOLISP_LastSQLStatement nil
)
;; If the connect string is a UDL file name ...
(if (= ".UDL"
(strcase
(substr ConnectString (- (strlen ConnectString) 3))
)
)
(progn
;; Set a flag that it's a UDL file
(setq IsUDL T)
;; Try to find it
(cond
((setq FullUDLFileName (findfile ConnectString)))
;; Didn't find it in the current directory or
;; the AutoCAD search path, try the AutoCAD
;; Data Source location
((setq FullUDLFileName
(findfile (strcat (vlax-get-property
(vlax-get-property
(vlax-get-property
(vlax-get-acad-object)
"Preferences"
)
"Files"
)
"WorkspacePath"
)
"\\"
ConnectString
)
)
)
)
;; Didn't find it, store an error message
(t
(setq ADOLISP_ErrorList
(list (list (cons "ADOLISP connection error"
(strcat "Can't find \""
ConnectString
"\""
)
)
)
)
)
)
)
)
)
;; If the first argument is a UDL file name... ...
(if IsUDL
;; If we found it ...
(if FullUDLFileName
(progn
;; Create an ADO connection object
(setq ConnectionObject
(vlax-create-object
"ADODB.Connection"
)
)
;; Try to open the connection. If there is an error
;; ...
(if (vl-catch-all-error-p
(setq TempObject
(vl-catch-all-apply
'vlax-invoke-method
(list ConnectionObject
"Open"
(strcat "File Name=" FullUDLFileName)
UserName
Password
ADOConstant-adConnectUnspecified
)
)
)
)
(progn
;; Save the error information
(setq ADOLISP_ErrorList
(ADO_ErrorProcessor TempObject ConnectionObject)
)
;; Release the connection object
(vlax-release-object ConnectionObject)
)
;; It worked, store the connection object in our
;; return value
(setq ReturnValue ConnectionObject)
)
)
)
;; The connect string is not a UDL file name.
(progn
;; Create an ADO connection object
(setq ConnectionObject
(vlax-create-object "ADODB.Connection")
)
;; Try to open the connection. If there is an error ...
(if (vl-catch-all-error-p
(setq TempObject
(vl-catch-all-apply
'vlax-invoke-method
(list
ConnectionObject "Open" ConnectString UserName
Password ADOConstant-adConnectUnspecified
)
)
)
)
(progn
;; Save the error information
(setq ADOLISP_ErrorList
(ADO_ErrorProcessor TempObject ConnectionObject)
)
;; Release the connection object
(vlax-release-object ConnectionObject)
)
;; It worked, store the connection object in our
;; return value
(setq ReturnValue ConnectionObject)
)
)
)
;; If we made a connection ...
(if ReturnValue
(progn
;; If we want to set ODBC Parsing to true ...
(if (not ADOLISP_DoNotForceJetODBCParsing)
(progn
;; Get the properties collection
(setq ConnectionPropertiesObject
(vlax-get-property
ReturnValue
"Properties"
)
)
;; If the properties collection has a "Jet OLEDB:ODBC
;; Parsing" item ...
(if (not (vl-catch-all-error-p
(setq ConnectionParsingPropertyObject
(vl-catch-all-apply
'vlax-get-property
(list
ConnectionPropertiesObject
"ITEM"
"Jet OLEDB:ODBC Parsing"
)
)
)
)
)
;; Set the "Jet OLEDB:ODBC Parsing" item to
;; "true" so the Jet engine accepts double-quotes
;; around delimited identifiers
(vlax-put-property
ConnectionParsingPropertyObject
"VALUE"
:vlax-true
)
)
)
)
;; And release our objects
(if (= 'VLA-OBJECT (type ConnectionParsingPropertyObject))
(vlax-release-object ConnectionParsingPropertyObject)
)
(if (= 'VLA-OBJECT (type ConnectionPropertiesObject))
(vlax-release-object ConnectionPropertiesObject)
)
)
)
ReturnValue
) |
|