From the course: .NET Essentials: Working with LINQ
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Review query expression clauses - .NET Tutorial
From the course: .NET Essentials: Working with LINQ
Review query expression clauses
- [Instructor] In this video, we will look at how to use the query expression syntax to write a link query against a dataset. In this video, I'll focus on what are called clauses. These are special words that are used in the query expression that represent either an extension method or some other necessary item for a query expression. I think the first thing we should look at is talk about what a query expression is. This is a special syntax created by Microsoft, so that C Sharp developers and Visual Basic developers who are writing LINQ queries can use a syntax that is similar to one that they would use when they're querying a relational database. For those of us that have worked with relational databases, you know that we work with structured query language, also known as SQL. So here's the thing. The query expression syntax that Microsoft created looks like SQL. It is a substitute for calling the real extension methods…
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Contents
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The three types of query expressions2m 16s
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Review query expression clauses4m 45s
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Examples of three query expressions3m 16s
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The select clause6m 26s
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Learn how to use select to project into another type2m 41s
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Select into anonymous type2m 16s
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Learn how to use expressions with select2m 15s
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Challenge: Write select expressions1m 28s
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Solution: Write select expressions1m 27s
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Index into another sequence2m 58s
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