I'm sorry but I feel the Access team has poor leadership or don't know what they are doing - so basically the same thing. First, they state Access can't handle other image types and the huge overhead involved, etc. All of which aren't true. When using the above example - the granularity of the overhead is almost non -existent.
Moreover, if you include wmp. This should have been a standard feature. But I've often heard people critize Access as a poor quality database with limitations. But it's not so much to do with limitations but rather strict business rules. If you are using Access or Access you can use the Attachment field and corresponding control. Please be aware that adding an Attachment field to an existing table might break existing queries.
Why don't want the attachement field which Saberman suggested? If you do not want the method, I think you can use OLE Object to store the images and then store it on a tempary folder and delete it, below is the vba code snippet for you to reference:. Unfortunately Bruce, no offense, but the solution you have proposed has nothing to do with the requirements of the project.
Unless I have wasted my time getting an education, but the main purpose of a relational database is to store data in an organized manner for easy retreival - not outsource it elsewhere.
You certainly do not need an Access database program to store images in a folder. What would be the point? A simple bunch of text put together and called html can do that perfectly fine. One of the many features of Access is an encrypted database which provides security and limits access to data wheras folders do not.
The art of inserting and selecting OLE data in Access seems to be unknown - a lost art. And so the easy answer is to offer the store-images-in-folders solution. And so no one ever really knows how or learns how to code OLE data into Access. Unfortuantely, Access does not use the FileStream method so it doesn't work with Access. The reason for using Access was to avoid depending on SQL server.
So basically, I'm not looking for a folder excuse I want to learn how to actually insert and select OLE data with Access code. Thank you. When you open an attached file in its parent program for viewing or editing, Access places a temporary copy of the file in a temporary folder.
If you change the file and save your changes from within the parent program, Access saves your changes to the temporary copy. When you return to Access and click OK to close the Attachments dialog box, Access prompts you to save the attached file again. Click Yes to write the changed file to your database, or click No to leave the file untouched in your database.
The Settings dialog box appears. The folder path appears in the Temporary Internet Files folder section. When you need to use attachments with a form or report, you use the attachment control.
The control renders image files automatically as you move among the records in a database. If you attach other types of files, such as documents or drawings, the attachment control displays the icon that corresponds to the file type. For example, you see the PowerPoint icon when you attach a presentation, and so on. The control also allows you to browse any attached files and open the Attachments dialog box. If you open the dialog box from a form, you can add, remove, edit, and save attachments.
If you open the dialog box from a report, you can only save attachments to your hard disk drive or a network location, because reports are read-only by design.
The steps in the following sections explain how to add an image control to a form or report, and how to scroll through records, attach files, and view your attachments. Remember that you can scroll through attachments only when a given record contains more than one attachment. The steps in this section explain how to add the attachment control to a form or report, and then bind the control to an Attachment field in an underlying table. You follow the same steps when adding the attachment control to a form or a report.
Before you start, remember that at least one of the tables in your database must have an attachment field. For information on adding an attachment field, see Add an attachment field to a table earlier in this article. Because form and report design can be complex processes, the steps in these sections assume that you already have a database with at least one table and one form or report. For information on creating tables, forms, or reports, see the following articles:.
Create tables in a database. Create a form by using the Form tool. Create a simple report. In the Navigation Pane, right-click the form or report that you want to change and click Design View on the shortcut menu.
The Field List pane appears and lists the fields in the table that provide the data for the form or report. The list denotes an attachment field by making it expandable that is, you can click the plus or minus sign next to the field. The following figure shows a typical attachment field in the Field List pane.
Drag the entire attachment field from the list to your form — the parent and child items — and drop it in the location that you want on your form. Access places an attachment control on your form and binds the control to the table field for you. As needed, right-click the control and click Properties to display the property sheet for the control. Set or change the control properties to match the rest of your form or report.
Save your changes, and then right-click the document tab and click either Form View or Report View to open the form or report for viewing. If the underlying field contains image files, the control renders those files. If the field contains another type of file, such as a Word document or PowerPoint presentation, the control displays the appropriate icon for that file type.
After you add an attachment control to a form, you can add, edit, remove, and save attached files directly from that form. When a record contains multiple attachments, you can also scroll through the attached files, which you cannot do when working with a table.
Note: The person who designed the form may have made the form read-only. If that is the case, you can use the Attachments dialog box only to save attached files to your hard disk drive or a location on your network. Open the form that displays your attachments, and locate the record to which you want to attach a file. The Mini toolbar appears:. Note: If you added the attachment control to the datasheet section of a split form, the Mini toolbar does not appear.
For more information about split forms, see the article Create a split form. Click the View Attachments button the paperclip icon to open the Attachments dialog box. Use the Look in list to navigate to the file that you want to attach, and then click Open. Note: The steps in this section apply to forms and reports. Click the Back left or Forward right arrows to scroll through the attached files.
If you want to know the names of the files, click the View Attachments button to open the Attachments dialog box. The names of attached files appear in the Attachments list. The steps in this section apply to tables, forms, and reports.
You can save either one or all of the files that are attached to a given record to locations on your hard disk drive or network. Remember that when you choose to save all files, you cannot choose to save some of the files — you must save them all.
To selectively save files, you need to do so one at a time. Open the table, form, or report that contains your attachments, and then open the Attachments dialog box. Open the Attachments dialog box from a table. Open the table in Datasheet view, and then double-click the attachment field that contains the attachment you want to save.
Open the Attachments dialog box from a form or report. Use the Save in list to navigate to the new location for your file, and then click Save. Use the Look in list to navigate to the new location for your files, and then click Save.
Double-click the attachment field in your table to open the Attachments dialog box. In your form in either Layout view or Form view , navigate to the record that contains the attachment you want to remove, and click the View Attachment button on the Mini toolbar to open the dialog box. In the Attachments dialog box, select the file that you want to delete and click Remove. The following section explains how to use your keyboard to place focus in the Navigation Pane and open the table, form, or report that contains attached files.
The steps also explain how to browse attached files and open the Attachments dialog box. Note: If the Navigation Pane is closed, pressing F11 opens it and places the focus in the pane. If the pane is open, pressing F11 closes it. You must press F11 again to open the pane and shift focus to it. Could you explain, for example, what the " 1" and LOF names mean? A file is opened, and it is assigned a number 1. The size of this array is set to the length of the file 1: LOF 1.
The GET function reads the file, and stores it into imgByte. At that point, imgByte is an array of bytes representing the image file. The Bestand field value is then set to this array and voila: the file is stored in the field. End please note: this is something else than storing an object in an OLE field, because theis method does not add the OLE wrappings to the file. I suppose that doing that way you avoid a LOT of size and processing overhead, but lose some functionality like preview in a form or in place edit — Patrick Honorez.
The OLE overhead is not much. But in place edit is really broken in Access so I'm glad we don't use that anymore! Aaron Kempf Aaron Kempf 2 2 silver badges 11 11 bronze badges. Very interesting! But I guess this would only work with objects stored as OLE, not as blob like birger's answer?
Agreed for the storage, but when you store "as OLE", you put the doc or even a part of a doc in a kind of enveloppe, including information on the possible client s , a format description, a preview, etc I don't think so. What they do: Read a file in chunks and add it to a blob using a VBA function.
Ralph M. Rickenbach Ralph M. Rickenbach I think it does what I want, but is there anything simpler out there? JeffO JeffO 7, 3 3 gold badges 40 40 silver badges 52 52 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.
0コメント