StackOverflow2013

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2013-12-31T14:48:37.053
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2013-12-31T14:55:44.487
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<pre><code>class BaseClass {...} public class MyClass: BaseClass {...} // Error </code></pre> <a href="http://msdn.microsoft.com/en-us/library/cx03xt0t.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/cx03xt0t.aspx</a> This is mentioned in the C# language specification and also this makes perfect sense because in your case the public class can be used in "public" context with public accessibility level allowing the access of a non-public class which is your base class and this would be the wrong behaviour. According to C# Language Specification 5.0: (Download the spec from <a href="http://www.microsoft.com/en-us/download/details.aspx?id=7029" rel="nofollow">http://www.microsoft.com/en-us/download/details.aspx?id=7029</a>) The following accessibility constraints exist: • The direct base class of a class type must be at least as accessible as the class type itself. • The explicit base interfaces of an interface type must be at least as accessible as the interface type itself. • The return type and parameter types of a delegate type must be at least as accessible as the delegate type itself. • The type of a constant must be at least as accessible as the constant itself. • The type of a field must be at least as accessible as the field itself. • The return type and parameter types of a method must be at least as accessible as the method itself. • The type of a property must be at least as accessible as the property itself. • The type of an event must be at least as accessible as the event itself. • The type and parameter types of an indexer must be at least as accessible as the indexer itself. • The return type and parameter types of an operator must be at least as accessible as the operator itself. • The parameter types of an instance constructor must be at least as accessible as the instance constructor itself.
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1. POWhat is the origin of CS0060:The direct base class of a class type must be at least as accessible as the class type itself
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1. USRobin Rizvi
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1. USRobin Rizvi
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