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C# Linq Group By on multiple columns [duplicate]

... Not the answer you're looking for? Browse other questions tagged c# linq group-by aggregate or ask your own question.
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What is the difference between an int and an Integer in Java and C#?

...rogrammer knowing the difference between an int and an Integer in Java/C# (Object-Oriented Programming Languages). 26 A...
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Why can I create a class named “var”?

Isn't var a keyword in C#? But why can I do this: 5 Answers 5 ...
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How to get C# Enum description from value? [duplicate]

...cription((MyEnum)value); The default underlying data type for an enum in C# is an int, you can just cast it. share | improve this answer | follow | ...
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A type for Date only in C# - why is there no Date type?

In our C# project we have the need for representing a date without a time. I know of the existence of the DateTime, however, it incorporates a time of day as well. I want to make explicit that certain variables and method-arguments are date-based . Hence I can't use the DateTime.Date property ...
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Reading Excel files from C#

...e a free or open source library to read Excel files (.xls) directly from a C# program? 32 Answers ...
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Creating a copy of an object in C# [duplicate]

Please have a look at the code below (excerpt from a C# book): 4 Answers 4 ...
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What is C# analog of C++ std::pair?

I'm interested: What is C#'s analog of std::pair in C++? I found System.Web.UI.Pair class, but I'd prefer something template-based. ...
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Multiline string literal in C#

Is there an easy way to create a multiline string literal in C#? 13 Answers 13 ...
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How to insert values into C# Dictionary on instantiation?

Does anyone know if there is a way I can insert values into a C# Dictionary when I create it? I can, but don't want to, do dict.Add(int, "string") for each item if there is something more efficient like: ...