The Get Orders function inside of Customers requires an instance of a connection, but you disposed of the required objects required to access the database back up in Load Data() when you called a. Be careful when you clean up your instances, that you are not using them again somewhere.
I have experienced lots of problems with the Rad Combobox control with trying to bind it while having Enableloadondemand set to true I'm currently binding on my gridview On Data Bound event by creating a single item and inserting it at index 0.
Let me suggest you take a look at this Code Library article.
NET Architecture MVP (Microsoft Most Valuable Professional) works as an Architect Consultant and provides consultancy on how to design and develop Web applications.
i have a snippet with how i handle the selectedindexchanged event.
Hello Carlos Franken, I am not sure that I fully understand the scenario that you are trying to implement.
Now when i need to change te selected Item the enableloadondemand fires correctly and loads items filtered on the text typed in the text area.
after selecting an item the On Selected Indexchanged event fires and the radcombobox text is updated to the text of the selected item.