Browse DevX
Sign up for e-mail newsletters from DevX

Tip of the Day
Expertise: Intermediate
Aug 6, 1997



Building the Right Environment to Support AI, Machine Learning and Deep Learning

ListView Controls Don't Accept Numeric Keys

In a collection object, such as the ListItems collection from the ListView control, or simply a generic VB collection object, you can specify a key to uniquely identify the item. Documentation states the key can be any String expression. What if the key needs to be a numerical string? In a ListView control, you might not set a numeric key. Even if you try to set a key equal to Str$(), you'll receive an error message. When displaying the results of a recordset with a ListView, the key would be the perfect place to hold the primary key for the row, if applicable. Because ListView doesn't have an ItemData property, the key is the only place to hold it. The solution is simple: append the string "key" to your Numeric Key, and use the Val function to retrieve its value:
Set itemX = lvPeople.ListItems.Add_
        (, , strName)
'Set the Key
itemX.Key = Str$(rstPeople!PersonID) _
        & "key"

        Use this code to retrieve the key:

lKey = Val(lvPeople.ListItems_
Steve Danielson
Comment and Contribute






(Maximum characters: 1200). You have 1200 characters left.



Thanks for your registration, follow us on our social networks to keep up-to-date