Why the class and where Keywords inherited to Generic interface?

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In my code snippet i have seen the below line

C#

public interface IDbSet<tentity> : IQueryable<tentity>, IEnumerable<tentity>, IQueryable, IEnumerable where TEntity : class

what is the purpose of this could you please tell me briefly what is the advantage of this.

[edit]Code block added - OriginalGriff[/edit]

Posted 20-May-14 2:31am

DGKumar

Updated 20-May-14 2:34am

OriginalGriff

v2

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OriginalGriff · Accepted Answer · 2014-05-20T02:37:00

It's declaring a new interface which implements four existing interfaces, and which insists that the Generic parameter that it is used with must be a class: it can't be another interface or a struct.

If you don't understand interfaces, then you need to start here: http://msdn.microsoft.com/en-us/library/ms173156.aspx[^] - it's a bit too big to discuss in a small textbox!

ugo.marchesini · Accepted Answer · 2014-05-20T02:43:00

Solution 2

Probably inside interface there are methods that use TEntity class.I can make a prediction that contains return value and/or arguments methods which use something IEnumerable like collection (

C#

new List<myclass>

) and something related to linq as well.
Hope helpful.
Hi.

Posted 20-May-14 2:43am

ugo.marchesini

Updated 20-May-14 2:59am

v4