GuidesASP Component Building Page 3

ASP Component Building Page 3




Here we show what we want the component to handle and how
the
code should work.
Server.ScriptTimeOut =
200
  ‘increase the time out for
larger files

Set uploadme =
server.CreateObject(“bobd.bobdupload”)
‘create our object

‘First we want to have the ability to control the
types
‘of files being uploaded. We are going to give 2 ways to
control
‘the file uploads,

bobdadd_illegal_file
and bobdadd_legal_file.
‘Both will take file types delmited’by commas.
‘If
bobdadd_legal_file is set it allows only the those files to be
uploaded.
‘If
bobdadd_illegal_file is set
it files with those ext  will be blocked.
‘In a real world
situation, only one of these two would be used

uploadme.bobdadd_illegal_file “exe,
asp” 
‘ block  *.exe, 
*.asp

uploadme.bobdadd_legal_file “doc,
htm”
‘allow only  *.doc,
*.htm

‘We want to give the ability
to have default settings for some important
‘properties. This
allows us to set a standard and not have to set them
everytime
‘the component is used. It also allows administration
to have a control in
‘site management. The directory to store
and if you are going to overwrite
‘existing files will allow
defaults thru the following  two methods. These would only

have to be set once and also could be set by making a registry
entry. Any
‘Directory setting can be either a physical or
a virtual
directory
.
uploadme.bobdSetDir
=
“C:files”

                
or
uploadme.bobdSetDir =
“myweb”

uploadme.bobdSetOverWrite =
false

‘These two values could also be set on an as
needed basis by the following
‘2 methods. These 2 override the
values in the registry
uploadme.bobdDirectory =
“c:files”
uploadme.bobdOverWrite = TRUE

‘We also want to add the ability to have a
posting item contain the value
‘of the receiving directory, so
that we can have user interaction. This property is set
‘to the
NAME of the input item of the posting form which will
contain the directory
‘setting.

uploadme.aspRequestDir =
“txt2”

‘Give the ability to view the raw code being
sent. This is great to
‘see and understand the data being sent
and received.

uploadme.aspDebug =
true

‘And the method that
actually does the file
work

uploadme.upload

‘The upload method returns 2 collections, the
bobdFileNames and
‘the bobdRequestParts. The bobdFileNames
collections has 2 methods
‘and 6 properties. Again it is a
collection so iteration is allowed.

For each item in 
uploadme.bobdfilenames
     response.write
“File Name is ” & _

              
uploadme.bobdfilenames(item).fName &


     response.write “File orig
dir is ” &
_
             
uploadme.bobdfilenames(item).fOrigDir &


     response.write “File save
dir is ” &
_
             
uploadme.bobdfilenames(item).fSaveDir &


     response.write “File length
is ” &
_
             
uploadme.bobdfilenames(item).fLength &


     response.write “File
extention is ” &
_
             
uploadme.bobdfilenames(item).fExt &


     response.write “File state
is ” &
_
             
uploadme.bobdfilenames(item).fstate & “

Next
item
‘Most of the properties are
self explanatory except for 1
‘The file state shows if the 
file was stored, the component will not
‘cast
an error on I/O errors. This is so that  in a multiple file
upload,
‘the component will store as many files as possible. The
asp page
‘will need to check to see if the file store was
completed. 

‘The 2 file methods are remove(to delete the
uploaded file) and
‘Move(which ,moves(renames) the file. Both
return values of true
‘if succesful.
if 
uploadme.bobdfilenames(item).move(“c:movedir”)
then
    response.write “The file was
moved!”
else
    response.write “File Move
failed!”
end if
if 
uploadme.bobdfilenames(item).remove  then
   
response.write “The file has been deleted”
else
  
response.write “File delete failed!”
end if

‘bobdRequestParts collection contain what you would
normally
‘access by Request(item). When doing the file upload we

‘have do a binaryread, which makes the request
collection
‘invalid. The bobdRequestParts replaces the
standard
‘request collection

my_name =
uploadme.asprequestparts(“t1”)
my_size =
uploadme.asprequestparts(“t3”)

%>
Now that we
know what we want the component to do
lets code it

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