Operation not supported on read-only collection in Silverlight

Question

Hi All I have a Combobox in my Application.The Data is populating into the combo box from database.In the Stored Proc i have given All Explicetely.Now i have another combo box in other page in which only data fetching from the database should be populated not All.So what i did is explecetely removed All by cmbFeedType.Items.Remove( ALL ); but its throwing an error like Operation not supported on read-only collection can anyone help on this please.. Thanks Prasant

Jaganathan Bantheswaran · Answer

Hi As ItemSource is ReadOnlyCollection type you cant remove an item. Try removing All from the dataset/collection BEFORE binding it to the combobox.

Priya Linge · Answer

Hi Please try this first make the itemsource collection of combobox null; combobox1.ItemSource=null; Hope this will help you. Thanks.