Linq

Hello Friend

For the most part, LINQ is all about queries, whether they are queries returning a set of matching objects, a single object, or a subset of fields from an object or set of objects. In LINQ, this returned set of objects is called a sequence. Most LINQ sequences are of type IEnumerable, where T is the data type of the objects stored in the sequence. For example, if you have a sequence of integers, they would be stored in a variable of type IEnumerable. You will see that IEnumerable runs rampant in LINQ. Many of the LINQ methods return an IEnumerable.

In the previous examples, all of the queries actually return an IEnumerable or a type that inherits from IEnumerable. However, I use the var keyword for the sake of simplicity at this point, which is a new shorthand technique that I cover in Chapter 2. You will see that the examples will begin demonstrating that sequences are truly stored in variables implementing the IEnumerable interface.

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srinivas reddy16y ago
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Hello Friend

For the most part, LINQ is all about queries, whether they are queries returning a set of matching objects, a single object, or a subset of fields from an object or set of objects. In LINQ, this returned set of objects is called a sequence. Most LINQ sequences are of type IEnumerable, where T is the data type of the objects stored in the sequence. For example, if you have a sequence of integers, they would be stored in a variable of type IEnumerable. You will see that IEnumerable runs rampant in LINQ. Many of the LINQ methods return an IEnumerable.

In the previous examples, all of the queries actually return an IEnumerable or a type that inherits from IEnumerable. However, I use the var keyword for the sake of simplicity at this point, which is a new shorthand technique that I cover in Chapter 2. You will see that the examples will begin demonstrating that sequences are truly stored in variables implementing the IEnumerable interface.
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