Radcombobox selectedvalue not updating
I had to add the Append Data Bound Items="true" tag to the telerik: Rad Combo Box control in the page. Gregg Crystal, Founder and CEO of Inalign, Inc., a full service Inbound Marketing Agency based out of New York.
Gregg is a Computer Engineer with over 20 years of experience in marketing and technology.
When a Product is selected, the Combo Box should change the selection to align with the Category Parent property of the Product.
Changing the Selected Item in the Combo Box should update the Category Parent property of the Product.
Creating a Combo Box that displays the list is quite simple.
Let's tackle the second issue (changing the Category Parent value of the selected Product) first.
The Selected Value Path defines the property of the List Object to match.
So, in our example, we end up with: Note that you have to keep the Selected Item property if you want to be able to update the Product property Category Parent.
The Selected Value property defines which property of the bound data object will be used to get the value.The Selected Item property, when bound to the correct property of a Product, will allow the user to make updates.This is not news, as it works very similarly in Win Forms.This post will go through the differences, and how they are used, and also do a little review on databinding in WPF.To set this up, let's define Category objects and Product objects like this: Category--ID--Category Name--Products (An IList)Product--ID--Product Name--Category Parent (A Category Object)In the detail form for the Product, you want to have a Combo Box that has as its Items Source the list of Categories.
What is surprising, is when the selected Product changes, the list doesn't update if you are using an ORM tool (like NHibernate or Castle Active Record).