csharp.tar.gz

CSharp-Compile-Run-code

.NET is Microsoft’s free and open source framework for developing native software applications on Linux, macOS, and Windows. The power of cross-platform development allows developers to design, code, and run programs on a wide array of platforms.

This course is an introduction to developing .NET applications using C#. You’ll start start with a comprehensive review of C# and computer programming fundamentals: data types, conditionals, loops, methods, and more. You’ll then review the basics of object-oriented programming before diving into methods, exception handling, delegation, and events. With this foundation, you’ll continue building interfaces, collections, database operations, and multithreading. You’ll wrap up with process improvements using dynamic binding, garbage collection, and unmanaged resources.

By the end of this course, you’ll have hands-on experience with C# and .NET, and be ready to build applications using object-oriented programming principles on almost any platform.

Mastering C# and .NET

**(True or False)** We can’t create a new method with the name, `Magicprint`, if we’ve already declared a method with this name.


(True or False) We can’t create a new method with the name, <code>Magicprint</code>, if we’ve already declared a method with this name.

Will code compile if we accidentally rename the `Main` method to `main`?

Will code compile if we accidentally rename the <code>Main</code> method to <code>main</code>?

Will this code compile in C# 9.0?
```C#
using System;

Console.WriteLine("Hello!")
```

Will this code compile in C# 9.0?
<pre><code class="language-C#">using System;

Console.WriteLine(&quot;Hello!&quot;)
</code></pre>

How do we perform an explicit cast to an `int`?

How do we perform an explicit cast to an <code>int</code>?

The `Console.ReadLine()` method reads user input. Suppose a user typed in `87`. What type of variable can we use to store this input?

The <code>Console.ReadLine()</code> method reads user input. Suppose a user typed in <code>87</code>. What type of variable can we use to store this input?

```C#
foreach (var item in items)
{
    Console.WriteLine(item);
}
```

```C#
switch input:
    case(51):
        return false;
    default:
        return true;
```

```C#
if (value > 89)
{
    return true;
}
```

```C#
var lowestGrades = GetLowestGrades();

foreach (string grade in lowestGrades)
{
    Console.WriteLine(grade);
}
```

```C#
var lowestGrades = GetLowestGrades();

if (lowestGrades.Length == 0)
{
    Console.WriteLine("The array is empty");
}
```

```C#
int[] grades = GetLowestGrades();
```

There's a method called `GetLowestGrades()` that returns an array of `int` types. Which of the following options will result in an error?

There’s a method called <code>GetLowestGrades()</code> that returns an array of <code>int</code> types. Which of the following options will result in an error?

**(True or False)** We can’t use `enum` objects as method parameters.


(True or False) We can’t use <code>enum</code> objects as method parameters.

Getting Started

C# Programming Basics

Classes and OOP

Classes and OOP II

Exception Handling

First Assessment

Delegates and Events

Interfaces

Additional Features

Collections

LINQ

Working with Strings

Working with Dates and Time

Multithreading and Asynchronous Programming

Reflection

Dynamic Binding

Garbage Collection and Unmanaged Resources

Final Assessment

Next Steps

Appendix

Quiz Yourself: C# Basics