AllExperts > Experts 
Search      

VB Script

Volunteer
Answers to thousands of questions
 Home · More Questions · Answer Library  · Encyclopedia ·
More VB Script Answers
Question Library

Ask a question about VB Script
Volunteer
Experts of the Month
Expert Login

Awards

About Us
Tell friends
Link to Us
Disclaimer

 
 
 
 
About Robert D. Fahey
Expertise
I have been proramming in VB for 5 years, and 2 with ASP. I have a solid understanding of ASP and can answer questions from beginner to intermediate. I will consider student projects for money if needed.

Experience
2 years

Organizations
AITP - Association of Information Technology Professionals

Education/Credentials
BS in IT
Client/Server Application Development - Certification

 
   

You are here:  Experts > Computing/Technology > Basic > VB Script > Newbie to ASP coding(Part #2...Revised???).....

Topic: VB Script


Expert: Robert D. Fahey
Date: 5/19/2003
Subject: Newbie to ASP coding(Part #2...Revised???).....

Question
Mr. Fahey,

I just sent you an email regarding my ASP problem. I do have an ASP book to refer to, and I think I am starting to "Crawl" my way to a resolution...still need your help if possible.

1. I pass a variable from an .htm page to an .asp page which will be used to determine which table to open/view via the recordset object "objRS."

2. I use a Select Case statement to read the variable passed in the form of Request.QueryString("section").

3. The value obtained via the Select Case Request.QueryString("section") determines the actual table name I will use in the opening of the table via the "objRS.Open" statement I have in the below code(I believe the objRS.Open statement is incorrect somehow, but I haven't figured it out yet...looking for suggestions):

<%
  Dim objConn, objRS
  Dim adOpenForwardOnly, adLockReadOnly, adCmdTable

  adOpenForwardOnly = 0
  adLockReadOnly = 1
  adCmdTable = 2
  
  Set objConn = Server.CreateObject("ADODB.Connection") ' Set DB Connection Object/Variable
  Set objRS = Server.CreateObject ("ADODB.Recordset") ' Set Recordset Object/Variable
  
  objConn.Open "DSN=mysystemdsn;UID=myuid;PWD=mypwd" ' Set System Datasource Name
  
  Select Case Request.QueryString("section")
    Case "about" objRS.tablename = "about_hwc"
   Case "acad"  objRS.tablename = "hwc_academics"
   Case "admit" objRS.tablename = "hwc_admissions"
   Case "cat"   objRS.tablename = "hwc_catalog"
   Case "dir"   objRS.tablename = "hwc_directory"
   Case "faid"  objRS.tablename = "hwc_faid"
   Case Else Response.Write "Error"
  End Select
  
  objRS.Open "objRS.tableneme", objConn, adOpenForwardOnly, adLockReadOnly, adCmdTable   'now open it

  While Not objRS.EOF       'Now loop through the records
   Response.Write objRS("navtitle") & ", "
   objRS.MoveNext
  Wend
  
  objRS.Close     'now close it
  objConn.Close
  
  Set objRS = Nothing      '...and clean up
  Set objConn = Nothing  
 %>


Answer
Dennis,
Ok, you fixed the first problem that I saw with your old code, the Set objTable = Server.CreateObject("MyTable.Table")....that will definately throw an error.  By the looks of it, you just want to grab a table name and use it based on what the value is in the QueryString object, correct?

If so, you're on the right track, but your Select Case Statement needs modifying and I've added a new variable to your list.  Check this out:

<%
Dim objConn, objRS
Dim adOpenForwardOnly, adLockReadOnly, adCmdTable
Dim strTableName ‘NEW

adOpenForwardOnly = 0
adLockReadOnly = 1
adCmdTable = 2

Set objConn = Server.CreateObject("ADODB.Connection") ' Set DB Connection Object/Variable
Set objRS = Server.CreateObject ("ADODB.Recordset") ' Set Recordset Object/Variable

objConn.Open "DSN=mysystemdsn;UID=myuid;PWD=mypwd" ' Set System Datasource Name

‘NEW
Select Case Request.QueryString("section")
   Case "about"
strTableName = "about_hwc"
   Case "acad"
strTableName = "hwc_academics"
   Case "admit"
strTableName = "hwc_admissions"
   Case "cat"
strTableName = "hwc_catalog"
   Case "dir"
strTableName = "hwc_directory"
   Case "faid"
strTableName = "hwc_faid"
   Case Else
Response.Write "Error"
End Select

objRS.Open  strTableName, objConn, adOpenForwardOnly, adLockReadOnly, adCmdTable 'now open it

While Not objRS.EOF    'Now loop through the records
  Response.Write objRS("navtitle") & ", "
  objRS.MoveNext
Wend

objRS.Close    'now close it
objConn.Close

Set objRS = Nothing    '...and clean up
Set objConn = Nothing
%>

You could add the adovbs.inc as an include file, it comes from Microsoft and gives you ALL the ADO named constants to use.  If you want to use it, simply add the following code to the top of your ASP page, this will "include" the file in your page:
<!-- #INCLUDE file="adovbs.inc" -->

If you want, here is the contents of adovbs.inc,  you can put this into any file and save it as adovbs.inc and it will work:

<%
'--------------------------------------------------------------------
' Microsoft ADO
'
' (c) 1996-1998 Microsoft Corporation.  All Rights Reserved.
'
'
'
' ADO constants include file for VBScript
'
'--------------------------------------------------------------------

'---- CursorTypeEnum Values ----
Const adOpenForwardOnly = 0
Const adOpenKeyset = 1
Const adOpenDynamic = 2
Const adOpenStatic = 3

'---- CursorOptionEnum Values ----
Const adHoldRecords = &H00000100
Const adMovePrevious = &H00000200
Const adAddNew = &H01000400
Const adDelete = &H01000800
Const adUpdate = &H01008000
Const adBookmark = &H00002000
Const adApproxPosition = &H00004000
Const adUpdateBatch = &H00010000
Const adResync = &H00020000
Const adNotify = &H00040000
Const adFind = &H00080000
Const adSeek = &H00400000
Const adIndex = &H00800000

'---- LockTypeEnum Values ----
Const adLockReadOnly = 1
Const adLockPessimistic = 2
Const adLockOptimistic = 3
Const adLockBatchOptimistic = 4

'---- ExecuteOptionEnum Values ----
Const adRunAsync = &H00000010
Const adAsyncExecute = &H00000010
Const adAsyncFetch = &H00000020
Const adAsyncFetchNonBlocking = &H00000040
Const adExecuteNoRecords = &H00000080

'---- ConnectOptionEnum Values ----
Const adAsyncConnect = &H00000010

'---- ObjectStateEnum Values ----
Const adStateClosed = &H00000000
Const adStateOpen = &H00000001
Const adStateConnecting = &H00000002
Const adStateExecuting = &H00000004
Const adStateFetching = &H00000008

'---- CursorLocationEnum Values ----
Const adUseServer = 2
Const adUseClient = 3

'---- DataTypeEnum Values ----
Const adEmpty = 0
Const adTinyInt = 16
Const adSmallInt = 2
Const adInteger = 3
Const adBigInt = 20
Const adUnsignedTinyInt = 17
Const adUnsignedSmallInt = 18
Const adUnsignedInt = 19
Const adUnsignedBigInt = 21
Const adSingle = 4
Const adDouble = 5
Const adCurrency = 6
Const adDecimal = 14
Const adNumeric = 131
Const adBoolean = 11
Const adError = 10
Const adUserDefined = 132
Const adVariant = 12
Const adIDispatch = 9
Const adIUnknown = 13
Const adGUID = 72
Const adDate = 7
Const adDBDate = 133
Const adDBTime = 134
Const adDBTimeStamp = 135
Const adBSTR = 8
Const adChar = 129
Const adVarChar = 200
Const adLongVarChar = 201
Const adWChar = 130
Const adVarWChar = 202
Const adLongVarWChar = 203
Const adBinary = 128
Const adVarBinary = 204
Const adLongVarBinary = 205
Const adChapter = 136
Const adFileTime = 64
Const adDBFileTime = 137
Const adPropVariant = 138
Const adVarNumeric = 139

'---- FieldAttributeEnum Values ----
Const adFldMayDefer = &H00000002
Const adFldUpdatable = &H00000004
Const adFldUnknownUpdatable = &H00000008
Const adFldFixed = &H00000010
Const adFldIsNullable = &H00000020
Const adFldMayBeNull = &H00000040
Const adFldLong = &H00000080
Const adFldRowID = &H00000100
Const adFldRowVersion = &H00000200
Const adFldCacheDeferred = &H00001000
Const adFldKeyColumn = &H00008000

'---- EditModeEnum Values ----
Const adEditNone = &H0000
Const adEditInProgress = &H0001
Const adEditAdd = &H0002
Const adEditDelete = &H0004

'---- RecordStatusEnum Values ----
Const adRecOK = &H0000000
Const adRecNew = &H0000001
Const adRecModified = &H0000002
Const adRecDeleted = &H0000004
Const adRecUnmodified = &H0000008
Const adRecInvalid = &H0000010
Const adRecMultipleChanges = &H0000040
Const adRecPendingChanges = &H0000080
Const adRecCanceled = &H0000100
Const adRecCantRelease = &H0000400
Const adRecConcurrencyViolation = &H0000800
Const adRecIntegrityViolation = &H0001000
Const adRecMaxChangesExceeded = &H0002000
Const adRecObjectOpen = &H0004000
Const adRecOutOfMemory = &H0008000
Const adRecPermissionDenied = &H0010000
Const adRecSchemaViolation = &H0020000
Const adRecDBDeleted = &H0040000

'---- GetRowsOptionEnum Values ----
Const adGetRowsRest = -1

'---- PositionEnum Values ----
Const adPosUnknown = -1
Const adPosBOF = -2
Const adPosEOF = -3

'---- enum Values ----
Const adBookmarkCurrent = 0
Const adBookmarkFirst = 1
Const adBookmarkLast = 2

'---- MarshalOptionsEnum Values ----
Const adMarshalAll = 0
Const adMarshalModifiedOnly = 1

'---- AffectEnum Values ----
Const adAffectCurrent = 1
Const adAffectGroup = 2
Const adAffectAll = 3
Const adAffectAllChapters = 4

'---- ResyncEnum Values ----
Const adResyncUnderlyingValues = 1
Const adResyncAllValues = 2

'---- CompareEnum Values ----
Const adCompareLessThan = 0
Const adCompareEqual = 1
Const adCompareGreaterThan = 2
Const adCompareNotEqual = 3
Const adCompareNotComparable = 4

'---- FilterGroupEnum Values ----
Const adFilterNone = 0
Const adFilterPendingRecords = 1
Const adFilterAffectedRecords = 2
Const adFilterFetchedRecords = 3
Const adFilterPredicate = 4
Const adFilterConflictingRecords = 5

'---- SearchDirectionEnum Values ----
Const adSearchForward = 1
Const adSearchBackward = -1

'---- PersistFormatEnum Values ----
Const adPersistADTG = 0
Const adPersistXML = 1

'---- StringFormatEnum Values ----
Const adStringXML = 0
Const adStringHTML = 1
Const adClipString = 2

'---- ConnectPromptEnum Values ----
Const adPromptAlways = 1
Const adPromptComplete = 2
Const adPromptCompleteRequired = 3
Const adPromptNever = 4

'---- ConnectModeEnum Values ----
Const adModeUnknown = 0
Const adModeRead = 1
Const adModeWrite = 2
Const adModeReadWrite = 3
Const adModeShareDenyRead = 4
Const adModeShareDenyWrite = 8
Const adModeShareExclusive = &Hc
Const adModeShareDenyNone = &H10

'---- IsolationLevelEnum Values ----
Const adXactUnspecified = &Hffffffff
Const adXactChaos = &H00000010
Const adXactReadUncommitted = &H00000100
Const adXactBrowse = &H00000100
Const adXactCursorStability = &H00001000
Const adXactReadCommitted = &H00001000
Const adXactRepeatableRead = &H00010000
Const adXactSerializable = &H00100000
Const adXactIsolated = &H00100000

'---- XactAttributeEnum Values ----
Const adXactCommitRetaining = &H00020000
Const adXactAbortRetaining = &H00040000

'---- PropertyAttributesEnum Values ----
Const adPropNotSupported = &H0000
Const adPropRequired = &H0001
Const adPropOptional = &H0002
Const adPropRead = &H0200
Const adPropWrite = &H0400

'---- ErrorValueEnum Values ----
Const adErrInvalidArgument = &Hbb9
Const adErrNoCurrentRecord = &Hbcd
Const adErrIllegalOperation = &Hc93
Const adErrInTransaction = &Hcae
Const adErrFeatureNotAvailable = &Hcb3
Const adErrItemNotFound = &Hcc1
Const adErrObjectInCollection = &Hd27
Const adErrObjectNotSet = &Hd5c
Const adErrDataConversion = &Hd5d
Const adErrObjectClosed = &He78
Const adErrObjectOpen = &He79
Const adErrProviderNotFound = &He7a
Const adErrBoundToCommand = &He7b
Const adErrInvalidParamInfo = &He7c
Const adErrInvalidConnection = &He7d
Const adErrNotReentrant = &He7e
Const adErrStillExecuting = &He7f
Const adErrOperationCancelled = &He80
Const adErrStillConnecting = &He81
Const adErrNotExecuting = &He83
Const adErrUnsafeOperation = &He84

'---- ParameterAttributesEnum Values ----
Const adParamSigned = &H0010
Const adParamNullable = &H0040
Const adParamLong = &H0080

'---- ParameterDirectionEnum Values ----
Const adParamUnknown = &H0000
Const adParamInput = &H0001
Const adParamOutput = &H0002
Const adParamInputOutput = &H0003
Const adParamReturnValue = &H0004

'---- CommandTypeEnum Values ----
Const adCmdUnknown = &H0008
Const adCmdText = &H0001
Const adCmdTable = &H0002
Const adCmdStoredProc = &H0004
Const adCmdFile = &H0100
Const adCmdTableDirect = &H0200

'---- EventStatusEnum Values ----
Const adStatusOK = &H0000001
Const adStatusErrorsOccurred = &H0000002
Const adStatusCantDeny = &H0000003
Const adStatusCancel = &H0000004
Const adStatusUnwantedEvent = &H0000005

'---- EventReasonEnum Values ----
Const adRsnAddNew = 1
Const adRsnDelete = 2
Const adRsnUpdate = 3
Const adRsnUndoUpdate = 4
Const adRsnUndoAddNew = 5
Const adRsnUndoDelete = 6
Const adRsnRequery = 7
Const adRsnResynch = 8
Const adRsnClose = 9
Const adRsnMove = 10
Const adRsnFirstChange = 11
Const adRsnMoveFirst = 12
Const adRsnMoveNext = 13
Const adRsnMovePrevious = 14
Const adRsnMoveLast = 15

'---- SchemaEnum Values ----
Const adSchemaProviderSpecific = -1
Const adSchemaAsserts = 0
Const adSchemaCatalogs = 1
Const adSchemaCharacterSets = 2
Const adSchemaCollations = 3
Const adSchemaColumns = 4
Const adSchemaCheckConstraints = 5
Const adSchemaConstraintColumnUsage = 6
Const adSchemaConstraintTableUsage = 7
Const adSchemaKeyColumnUsage = 8
Const adSchemaReferentialConstraints = 9
Const adSchemaTableConstraints = 10
Const adSchemaColumnsDomainUsage = 11
Const adSchemaIndexes = 12
Const adSchemaColumnPrivileges = 13
Const adSchemaTablePrivileges = 14
Const adSchemaUsagePrivileges = 15
Const adSchemaProcedures = 16
Const adSchemaSchemata = 17
Const adSchemaSQLLanguages = 18
Const adSchemaStatistics = 19
Const adSchemaTables = 20
Const adSchemaTranslations = 21
Const adSchemaProviderTypes = 22
Const adSchemaViews = 23
Const adSchemaViewColumnUsage = 24
Const adSchemaViewTableUsage = 25
Const adSchemaProcedureParameters = 26
Const adSchemaForeignKeys = 27
Const adSchemaPrimaryKeys = 28
Const adSchemaProcedureColumns = 29
Const adSchemaDBInfoKeywords = 30
Const adSchemaDBInfoLiterals = 31
Const adSchemaCubes = 32
Const adSchemaDimensions = 33
Const adSchemaHierarchies = 34
Const adSchemaLevels = 35
Const adSchemaMeasures = 36
Const adSchemaProperties = 37
Const adSchemaMembers = 38

'---- SeekEnum Values ----
Const adSeekFirstEQ = &H1
Const adSeekLastEQ = &H2
Const adSeekAfterEQ = &H4
Const adSeekAfter = &H8
Const adSeekBeforeEQ = &H10
Const adSeekBefore = &H20

'---- ADCPROP_UPDATECRITERIA_ENUM Values ----
Const adCriteriaKey = 0
Const adCriteriaAllCols = 1
Const adCriteriaUpdCols = 2
Const adCriteriaTimeStamp = 3

'---- ADCPROP_ASYNCTHREADPRIORITY_ENUM Values ----
Const adPriorityLowest = 1
Const adPriorityBelowNormal = 2
Const adPriorityNormal = 3
Const adPriorityAboveNormal = 4
Const adPriorityHighest = 5

'---- CEResyncEnum Values ----
Const adResyncNone = 0
Const adResyncAutoIncrement = 1
Const adResyncConflicts = 2
Const adResyncUpdates = 4
Const adResyncInserts = 8
Const adResyncAll = 15

'---- ADCPROP_AUTORECALC_ENUM Values ----
Const adRecalcUpFront = 0
Const adRecalcAlways = 1
%>

Hope all this helps!

Add to this Answer    Ask a Question



  Rate this Answer
   Was this answer helpful?
Not at allDefinitely              
   12345  

     
About Us | Advertise on This Site | User Agreement | Privacy Policy | Help
Copyright  © 2008 About, Inc. About and About.com are registered trademarks of About, Inc. The About logo is a trademark of About, Inc. All rights reserved.