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Hi ,

using System;

namespace Microsoft.AspNet.Identity
    // Summary:
    //     Minimal interface for a user with a string user key
    public interface IUser
        // Summary:
        //     Unique key for the user
        // Returns:
        //     The unique key for the user
        string Id { get; }
        string UserName { get; set; }

we can declare only constant in interface
can any one explain above code
Updated 21-Dec-15 22:58pm

1 solution

we can declare only constant in interface

Please note interfaces are well documented, see "Interfaces (C# Programming Guide)"[^].

The code you posted defines an interface having two properties, namely the read-only Id and the read/write UserName.
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[no name] 22-Dec-15 6:30am    
A 5.
CPallini 23-Dec-15 3:04am    
Thank you.

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