In C# what does this syntax do and what is it called?

I'm guessing this is saying the Constructor for Or开发者_运维知识库derRepository passes its parameter to the base constructor?

public OrderRepository(MFEntitiesContainer context) : base(context) { }

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This is called constructor chaining - you are chaining the constructor to the base constructor overload.

As you assume, it passes the parameter to the matching base class constructor.

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Correct. Its calling the "base constructor".

See this page on constructors.

http://msdn.microsoft.com/en-us/library/ms173115(v=VS.100).aspx