explanation about source code of combobox

Question

I find this source code that allows me Binding ComboBox directly to enum values but I do not understand this instruction public IList UserTypes { get { // Will result in a list like {Tester Engineer} return Enum.GetValues( typeof (UserType)).Cast ().ToList (); } } public UserType UserType { get ; set ; } knowing that this code I find it in this site :http://www.ridgesolutions.ie/index.php/2014/11/05/wpf-xaml-binding-combobox-directly-to-enum-values/

Nilesh Shah · Answer

it is code to convert Enum values to a list but it seems all confusing to you because same names are used. I suggest to you to change those names in Visual Studio using right click -> rename to avoid confusion then things will become clear. alternatively you can also write comment in that original blog post too the auther may answer.

Mukesh Nayak · Answer

Hi  The code is trying to convert the enum values to IList. If you check Enum.GetValue in the first image its taking you enum type as parameter and converting enum values to array of object . Now UserTypes is IList so we have to convert array to List of UserType using ToList() extension method but if we directly convert array of Object to ToList () it will give compilation error as shown in image above because it is stlll array of object not array of UserType . So we need to use Cast to conver Array of object to Array of UserType Once you have Array of UserType you can directly convert to List as following : return Enum.GetValues( typeof (UserType)).Cast ().ToList(); And this will work. Regards Mukesh Nayak

abdelwaheb ammar · Answer

i don't uderstand why he use the IList and what he mean when he write this instruction Enum.GetValues( typeof (UserType)).Cast ().ToList (); ?