To make a useful commercial site, you often have to store complex user-defined types (classes) or collections.
In the next exercise, you'll edit the Web.config file to add a collection of strings called
CHOSENBOOKS. Doing so will allow the user to choose one or more books, and have those choices stored in the user's profile.
Add a line to Web.config for your new property:
<profile> <properties> <add name="lastName" /> <add name="firstName" /> <add name="phoneNumber" /> <add name="birthDate" type="System.DateTime"/> <add name="CHOSENBOOKS" type="System.Collections.Specialized.StringCollection" /> </properties> </profile>
To see this collection at work, edit the page ProfileInfo.aspx, inserting a row with a CheckBoxList just above the row with the Save button, as shown in Figure 12-37.
Figure 12-37. Adding checkboxes to profile
Modify the Save button handler to add the selected books to the profile, as shown in Example 12-14.
Example 12-14. Code to modify Save button Click event handler
Profile.CHOSENBOOKS = New System.Collections.Specialized.StringCollection() For Each item As ListItem In Me.cblChosenBooks.Items If item.Selected Then Profile.CHOSENBOOKS.Add(item.Value.ToString()) End If Next
Each time you save the books, you create an instance of the
String collection, and you then iterate through the checked list boxes, looking for the selected items. Each selected ...