Declaring a Query and Filtering by Type

Explore how to declare LINQ queries with either the var keyword or specific types to improve code clarity. Understand how to filter collections by type using the OfType extension method. This lesson helps you manage complex type hierarchies in sequences and refine data queries for better control and readability.

We'll cover the following...

Declaring a query using var or a specified type
Filtering by type
- Try it yourself

1.Introduction

2.Hello, C#! Welcome, .NET!

3.Speaking C#

4.Controlling Flow, Converting Types, and Handling Exception

5.Writing, Debugging, and Testing Functions

6.Building Your Own Types with Object-Oriented Programming

7.Implementing Interfaces and Inheriting Classes

8.Packaging and Distributing .NET Types

9.Working with Common .NET Types

10.Working with Files, Streams, and Serialization

11.Working with Data Using Entity Framework Core

12.Querying and Manipulating Data Using LINQ

13.Introducing Web Development Using ASP.NET Core

14.Building Websites Using ASP.NET Core Razor Pages

15.Building Websites Using the Model-View-Controller Pattern

16.Building and Consuming Web Services

17.Building User Interfaces Using Blazor

18.Conclusion

Declaring a Query and Filtering by Type

Declaring a query using `var` or a specified type

Declaring a Query and Filtering by Type

Declaring a query using var or a specified type

Declaring a query using `var` or a specified type