Display BLOB fields in an inline or HREF linked manner.
Obj.dbBLOB = "Field| Context| Label | Offset"
|Field||FieldNameOrNumber is the Database field that is of BLOB type (128, 204, 205).|
|Context|| The HTML context type (image/jpg, image/bmp, image/gif, application/msexcel etc.) These can be found in your browser’s “Helper Apps”). |
2005 new implementation - Auto (Autodetect BLOB Type - gif, jpg, png, bmp and pdf only). Default = "text/html" which covers Ascii mode also. You can mix the type of Blobs stored in the field and display in the inline mode. Inline does not need any context. This implementation is truely amazing.
|Label||This text will be displayed when Linked images are used instead of in-line images.|
|Offset|| Every database implements BLOBs differently. When binary objects are stored in the data field with an attached header, you must determine how many bytes (if any) are delivered in front of the actual binary data. Some examples are: |
* ACCESS OLE-OBJ field containing BMP images – Offset = 78 (NWIND Employee Table example)
* Borland Paradox’s BLOB field storing images (Biolife example) – Offset = 8Set Offset to –1 if hyperlinking is not desired. In this case, the image will be displayed “in-line”.
For inline display, dbBookMark must be specified. Only the table name of the BookMark is used upon re-entrance image display.
[vb] .dbBlob = "field=Pic|context=auto|label=Hyperlink to Blob|offset=0" .dbBlob = "field=logo|context=image/gif|label=browser|offset=0"
[vb] <script language="vb" runat="server"> Sub Page_Load(Source as Object, E as EventArgs) Dim BGif As New Tornado.Z() With BGif .dbQP = "U=92|S=14|dt=SQL|th=ti=Blob Demo" .dbSQL="SELECT pub_id, logo From pub_info" .dbDSN="fujitsu;pubs;sa;sa" .dbBookMark = "pub_info;0" .dbBlob = "field=logo|context=image/gif|label=browser|offset=0" .ASPdbNet End With End Sub </script>