OL98: ListBox Bound to Keywords Field Unexpectedly Changes
Article ID: 196937
Article Last Modified on 8/9/1999
APPLIES TO
- Microsoft Outlook 98 Standard Edition
This article was previously published under Q196937
SYMPTOMS
When using a custom form containing a ListBox control, Microsoft Outlook
unexpectedly adds a new possible value to the control.
CAUSE
This behavior is due to the storage limitation of Keywords fields. If the
control is bound to a field of type Keywords and you select a number of
possible values in the control, the field may exceed its 255-character
maximum length. This causes the last value to be truncated.
Because the custom Keywords field now contains a new value that is not one
of the options in the control, Outlook adds this new value to the list of
possible choices in the control.
MORE INFORMATION
If you bind a ListBox control to a Keywords field, check boxes appear next
to each of the possible values in the control. When using the form, a user
can select multiple values by clicking the check boxes in the control.
REFERENCES
For more information about using a ListBox with a Keywords field, please
see the following reference:
"Building Applications with Microsoft Outlook 98," Peter Krebs and Jim
Groves, pages 175-176, Microsoft Press, 1998.
For more information about creating solutions with Microsoft Outlook 98,
please see the following articles in the Microsoft Knowledge Base:
180826
OL98: Resources for Custom Forms and Programming
182349
OL98: Questions About Custom Forms and Outlook Solutions
WORKAROUND
Use any of the following methods:
- Shorten the length of the possible values in the control so that a user
cannot select more than 255 total characters.
- If possible, use more than one Keywords field to store the possible
values.
- Redesign the form to avoid the use of the Keywords fields. For example,
use multiple check boxes on the form instead.
Additional query words: OutSol OutSol98
Keywords: kbprb KB196937