troubleshooting Question

Linq-to-SQL Syntax Question

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adskarcoxFlag for United States of America asked on
.NET ProgrammingC#ASP.NET
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My questions concern this Linq-to-SQL statement:

var r in db.Roles.OrderBy(c => c.RoleName)

1) What is the syntax form called where dots are used in Linq, instead of just typing out a full Linq statement (hopefully this makes sense).

2) I understand what "c => c.RoleName" does, but I do not understand why the syntax is organized like that.  I feel that this would make more sense:

var r in db.Roles.OrderBy(r.RoleName)

or this:

var r in db.Roles.OrderBy(RoleName)

Why is this needed: "c => c.RoleName"?  I don't understand the purpose of pointing c to c.RoleName.  This is not as intuitive as the two examples I provided above and at this point I do not have a complete understanding of why the syntax is arranged like it is.

Any assistance with these two questions would be greatly appreciated.  Long answers are welcome :)
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