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Learn to create methods that return values

Learning objectives

• Understand return types
• Learn more about the return keyword
• Learn more about capturing method return values

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Learn about exceptions, the exception handling process supported by C#, and then implement exception handling patterns for various coding scenarios.

Learning objectives

• Examine the basic categories of exceptions and review some common system exceptions.
• Examine the exception handling tools included with C# and techniques for using these tools.

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Learn how to use different types of input parameters in methods

Learning objectives

• Learn more about using parameters
• Understand method scope
• Understand pass-by-reference and pass-by-value parameter types
• Learn how to use optional and named arguments

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This module guides you through a code review and debugging process, as well as the process for adding exception handling to an application.

Learning objectives

• Use the Visual Studio Code debugger tools to identify and correct an issue in your code logic.
• Implement exception handling in a C# console application using the try-catch pattern.
• Create and throw exceptions with customized properties.
• Catch exceptions at a lower level in the call stack.

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In this module, you’ll run an application to identify logic issues and then use the Visual Studio Code debugger tools to isolate and fix the issue.

Learning objectives

• Demonstrate your ability to use the Visual Studio Code debugger tools to identify and correct an issue in your code logic.

Prerequisites

• An installation of Visual Studio Code that’s configured for C# application development.
• Ability to develop C# console applications that implement business logic using iteration statements, selection statements, and custom methods.
• Experience using the Visual Studio Code debugging tools for C#.
• Experience implementing try-catch exception handing and throwing exceptions in C# console applications.

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Learn how to debug C# console applications in Visual Studio Code and how to implement exception handling using the try-catch pattern. Configure the C# debugger tools in Visual Studio Code and use the debugger tools to isolate and fix logic issues. Examine the exception types provided by .NET and the properties of exception objects, then implement exception handling and throw customized exception objects.

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Learn the difference between many data types, how they work, what they do, and how to choose one over another.

Learning objectives

• Learn the fundamental differences between value types and reference types.
• Describe the properties of many new numeric data types, including new integral types and floating-point types.
• Write code that returns the maximum and minimum values that numeric data types can store.
• Use the new keyword to create new instances of a reference type.
• Determine which data type you should choose for a given application.

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Demonstrate your ability to develop a console app that relies on methods with different parameters and return values to coordinate a visit to the petting zoo.

Learning objectives

• Plan design details with pseudo-code.
• Use methods to perform specific tasks.
• Create methods that accept require and optional parameters.
• Use values returned from methods.

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Demonstrate your ability to develop a console app that implements data formatting and using arrays to deliver a multiple term search feature.

Learning objectives

• Apply iteration statements using data input.
• Process data.
• Format data output.
• Choose the correct data types and safely converting data types.
• Create and manipulate string arrays, and sort array data.
• Modify and build complex strings from multiple data sources, and format data for display.

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Demonstrate your ability to develop a console app that implements data formatting and using arrays to deliver a search feature.

Learning objectives

• Apply iteration statements to gather data input.
• Use data processing.
• Format data output.
• Choose the correct data types and safely convert data types.
• Manipulate number, string and character arrays, as well as add, remove, and sort data.
• Modify and build complex strings from multiple data sources, and format data for display across regions.

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