https://www.dotnetzone.gr:443/cs/blogs/iwannis/archive/2010/09/09/entity-framework-the-context-comboboxes-and-include-foreign-key-columns.aspxHow do they all connect? Well it boils down to the following questions: If I am using Entity Framework in a Desktop application when should I open the Context and for how long should I keep it open? I have ComboBoxes that will be used to select valueselCommunityServer 2.1 SP3 (Build: 20423.1)