OL97: Working with Keywords Fields from VBScript (174475)

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Standard Keywords Fields

Outlook 97 provides three standard keywords fields that can be modified.

   Field name   Forms available in:
   ----------   ------------------------------------------
   Categories   All
   Companies    Contact, Task, Task Request, Journal Entry
   Children     Contact
				

NOTE: Task items also have a Contacts keywords field, but this field is read-only and therefore cannot be used in solutions.

When accessing these standard keywords fields through the Outlook object model, they are treated like a standard text field. For example, if the Categories selected for a contact are Personal, Phone Calls, and Waiting, the following line of VBScript code will set the MyCategories variable equal to the entire list of categories:

   MyCategories = Item.Categories
				

You can use the Split function in VBScript version 2.0 to assign individual elements of the field to an array variable. The following sample code takes the three keywords and places them into the first three elements of array MyArray:

   ' Chr(44) is the ANSI value of a comma.
   ' Chr(32) is the ANSI value of a space.
   ' Together, this is the delimiter for a keywords field.
   MyArray = Split(Item.Categories, Chr(44) & Chr(32))
   MsgBox MyArray(0)
   MsgBox MyArray(1)
   MsgBox MyArray(2)
				

The Split function is not available with VBScript version 1.0, which is the version that is included with all versions of Outlook 97.

For more information about obtaining VBScript version 2.0 and other general information about VBScript, please see the following article in the Microsoft Knowledge Base:

User-Defined (Custom) Keywords Fields

It is not possible to directly modify the contents of a user-defined keyword field using VBScript. Outlook uses a different variation of array data type than that supported by VBScript, and therefore a "Type mismatch" error message will appear if you try to display the text of the field in a message box (MsgBox), assign the field to an array variable, or perform any string-related function on it.

For example, if you create a keywords field called MyKeywords, the following two lines of code will both generate a "Type mismatch" error message:

   MsgBox Item.UserProperties.Find("MyKeywords").Value
   Item.UserProperties.Find("MyKeywords").Value = "New Text"
				

You can work around this limitation by accessing the text via a control or by using a standard keywords field.

Accessing the Text Via a Control:

You can work around this limitation by "filtering" the text through a control. For example, you can place a text box (Textbox1) on a form page (P.2) and bind this text box to a user-defined keywords field (MyKeywords). The following steps create sample code that adds the word "New" to the beginning of the MyKeywords field.

NOTE: If you do not want to display the text box used to gain access to the keywords text, you can right-click the text box, click Properties, and clear the Visible property on the Display tab of the Properties window.

1. Open a new, standard mail message.
2. On the Tools menu, click Design Outlook Form.
3. Click the message area of the form to select the message control, then drag the top of the control down to make room for additional controls.
4. In the Field Chooser, click New.
5. In the New Field window, type MyKeywords in the Name box, click Keywords in the Type list, and then click OK.
6. Drag the MyKeywords field from the Field Chooser to the blank area above the message control.
7. From the Toolbox, drag a command button (CommandButton) to the form.
8. On the Form menu, click View Code.
9. Type the following code into the Script Editor:

          Sub Commandbutton1_Click()
             Set MyPage = Item.GetInspector.ModifiedFormPages("Message")
             Set MyControl = MyPage.Controls("TextBox1")
             MyControl.Value = "New " & MyControl.Value
             MsgBox MyControl.Value
          End Sub
   						

10. On the Tools menu, click Design Outlook Form.
11. Click the command button to run the VBScript code. The value of the MyKeywords field will change. This can be verified by entering design mode, displaying the All Fields page of the form, and viewing the contents of the field.

Using a Standard Keywords Field:

If one of the standard keywords fields is not being used and it is available based on the type of form you are using (see the Standard Keywords Fields table earlier in this article), you can use that field to gain access to the text in the field. You can temporarily assign the value of your custom keywords field to the standard field, modify the text while it is in the standard field, assign the standard field back to your custom keywords field, and then delete the contents of the standard field you temporarily used. The following sample code provides an overview of this process:

    ' Assign the custom keywords field (MyKeywords) to Categories.
   Item.Categories = Item.UserProperties.Find("MyKeywords")

   ' Modify the field.
   Item.Categories = "New " & Item.Categories

   ' Display the modified field.
   MsgBox Item.Categories

   ' Replace the modified field.
   Item.UserProperties.Find("MyKeywords") = Item.Categories

   ' Reset the Categories field.
   Item.Categories = ""