- [Narrator] So far, all of our if statements have worked with only two possible paths of execution. But sometimes you have something a little bit more complicated than that. So let's add a new method to our flow control class and this one is going to work a little bit differently. This one's going to return a string, based on which color you pass in. So we'll call this one primary or secondary and we'll take a string for the color.
So what we're going to do here is we're going to take a string in for the color and if it's primary, we'll return primary, if it's secondary, we'll return secondary. To do this, we're going to use a series of if statements. And you can string them together and that's really what I'm about to show you. So we can say if color.to lower, equals red, that's a primary color, then we'll need to set some value to primary.
We could return, but let's do it this way this time. Let's do var, and we'll just call it result and I'll set it equal to an empty string for now. So if it's red, I'll say result equals primary. Now instead of an else statement, I actually need more than just two possibilities so I'm say, else if color.to lower equals blue, then we can say result equals primary.
And we've got one more, we can say else if color.to lower equals yellow, then we can say result equals primary. And if none of that is true, we're just going to assume, for the sake of the example, that it must be secondary. So we'll say result equals secondary. And then when we're done, we need to return the result.
So you can see here how we are chaining our if statements together so that we can evaluate something with more than just two possibilities. There's actually a much better way to do this but this is a good example of using if, else if and else together.
Author
Released
1/19/2018- Writing unit tests in C#
- Working with simple and multidimensional arrays
- Managing ordered and unordered data with lists
- Evaluating conditions with if-else statements
- Using OR, AND, and NOT operators
- Building loops
- Debugging and handling exceptions
- Creating the final build of your C# project
Skill Level Beginner
Duration
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Introduction
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Welcome1m 17s
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What you should know1m 48s
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1. Unit Testing and Test-Driven Development
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What is unit testing?1m 25s
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Writing a unit test3m 53s
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Running tests1m 57s
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Setting up tab groups1m 16s
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2. Arrays and Collections
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Simple arrays4m 36s
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Resizing arrays4m 4s
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Working with simple arrays3m 53s
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Working with lists2m 53s
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Introduction to LINQ4m 25s
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3. Flow Control
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If-else, if-else statements2m 34s
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Switch statements3m 40s
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Logical NOT1m 26s
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For loop4m 22s
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Testing the assembly3m 56s
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The foreach loop3m 38s
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Do and do-while loops3m 23s
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4. Exception Handling
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Adding a console project4m 7s
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Cleaning up with finally2m 3s
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5. Getting to Production
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Working with NuGet packages4m 18s
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Logging with NLog6m 6s
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Final build3m 7s
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Conclusion
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Next steps1m 57s
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Video: If-else, if-else statements