Book Image

Beginning C# 7 Hands-On ??? Advanced Language Features

By : Tom Owsiak
Book Image

Beginning C# 7 Hands-On ??? Advanced Language Features

By: Tom Owsiak

Overview of this book

Beginning C# 7 Hands-On – Advanced Language Features assumes that you’ve mastered the basic elements of the C# language and that you're now ready to learn the more advanced C# language and syntax, line by line, in a working Visual Studio environment. You'll learn how to code advanced C# language topics including generics, lambda expressions, and anonymous methods. You'll learn to use query syntax to construct queries and deploy queries that perform aggregation functions. Work with C# and SQL Server 2017 to perform complex joins and stored procedures. Explore advanced file access methods, and see how to serialize and deserialize objects – all by writing working lines of code that you can run within Visual Studio. This book is designed for beginner C# developers who have mastered the basics now, and anyone who needs a fast reference to using advanced C# language features in practical coding examples. You'll also take a look at C# through web programming with web forms. By the time you’ve finished this book, you’ll know all the critical advanced elements of the C# language and how to program everything from C# generics to XML, LINQ, and your first full MVC web applications. These are the advanced building blocks that you can then combine to exploit the full power of the C# programming language, line by line.
Table of Contents (35 chapters)
Title Page
Credits
About the Author
www.PacktPub.com
Customer Feedback
Preface

Creating an application to save text


By the end of this chapter, you'll have made a little application like the one shown in Figure 22.1.1. For Save Location, you can enter something like c:\data\samp.txt, to save a text file:

Figure 22.1.1: A user interface similar to the one you will build for the application in this chapter

Then, you can enter some text, such as This is some sample text to be saved.:

Figure 22.1.2: The Save Location with some sample text entered in the application

Now click on the Save Text button. This brings up Notepad to confirm that it's been saved, as shown in Figure 22.1.3:

Figure 22.1.3: The sample text is saved, and it brings up Notepad

If you want, you can also open the text back in the page. So, click Open and then it's saved in the page, as shown in Figure 22.1.4:

Figure 22.1.4: The sample text is saved in the page

Further, if you didn't specify your path, obviously that will result in an error, as shown in Figure 22.1.5. In this case, it displays the Empty path name...