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In C#, what is the difference between public, private, protected, and having no access modifier?
...e same class or struct, or in a derived class.
private protected (added in C# 7.2)
The type or member can only be accessed by code in the same class or struct, or in a derived class from the same assembly, but not from another assembly.
internal
The type or member can be accessed by any code in the ...
Event Signature in .NET — Using a Strong Typed 'Sender'? [closed]
...ublisher's event exactly, then covariance and contravariance are involved. C# has had delegate covariance and contravariance since forever, so it feels intrinsic, but VB.NET did not have delegate covariance and contravariance until .NET 3.0. Therefore, VB.NET for .NET 2.0 and below would not be able...
Are nullable types reference types?
...ue of the data type, the struct changes HasValue to true.
Nullable types (C# Programming Guide)
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When and why would you seal a class?
In C# and C++/CLI the keyword sealed (or NotInheritable in VB) is used to protect a class from any inheritance chance (the class will be non-inheritable). I know that one feature of object-oriented programming is inheritance and I feel that the use of sealed goes against this feature, it stop...
Hidden Features of PHP? [closed]
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My initial move from PHP to C# almost killed me. In C#, arrays are just a simple structure with a static size and numeric index. In PHP, arrays are the duct tape of the universe!
– Dinah
Mar 25 '09 at 16:04
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Best way to check if object exists in Entity Framework?
...ith some twists. I would like to request you to translate your solution in C# so that we and many upcoming developers would benefit. +1. I would love the solution expanded up to a blog post either! :)
– sangam
Feb 23 '15 at 17:36
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Options for embedding Chromium instead of IE WebBrowser control with WPF/C#
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I suffered for months supporting an Awesomium-based C# app; it may rock for C++ games but in C# their browser control is downright buggy. The complicated deployment (you need their weird installer to add stuff into the GAC), the buggy behaviour (sometimes it starts up with a b...
What is boxing and unboxing and what are the trade offs?
...llions just call them unboxed.
** I'm also focusing on Java, Haskell, and C# in this answer, because that's what I know. For what it's worth, Python, Ruby, and Javascript all have exclusively boxed values. This is also known as the "Everything is an object" approach***.
*** Caveat: A sufficient...
Custom Compiler Warnings
...soleteAttribute is treated specially by the compiler and is defined in the C# standard. Why on earth is ObsoleteAttribute not acceptable? It seems to me like this is precisely the situation it was designed for, and achieves precisely what you require!
Also note that Visual Studio picks up the warni...
How do I generate a random int number?
How do I generate a random integer in C#?
32 Answers
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