Beginning C# 7 Hands-On – Advanced Language Features by Owsiak, Tom -- Read -- Imperial Library of Trantor

Index

Title Page Copyright

Beginning C# 7 Hands-On – Advanced Language Features

Credits About the Author www.PacktPub.com

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Customer Feedback Preface

What you need for this book Who this book is for Conventions Reader feedback Customer support

Downloading the example code Downloading the color images of this book Errata Piracy Questions

Creating a Simple Generics Class

Creating a generics class

Working with different data types Making parameters that are generic Displaying the values

Adding a button to Default.aspx Initializing a collection of integers to their array and displaying the results

Changing the data types in our generics class Running the program Accumulating the input

Chapter review Summary

Creating a Generic Method

Creating a button to exchange and then comparing two values Writing a swap function

Comparing values using the CompareTo method Introducing constraints Completing the GenMethods class Hardcoding the values Running the program Modifying the program for an additional type of comparison Modifying the program for different data types

Chapter review Summary

Implementing a Generic Interface to Accomplish Sorting

Adding a button to sort and display results Creating a generics interface class

Implementing the interface Adding a virtual function Adding refinements

Entering the reference code

Upcasting Downcasting Running the program

Chapter review Summary

Making Delegates More Flexible with Generics

Adding a summarize button to the HTML

Constructing a delegate Assigning functions to represent the delegate Calling the delegate Running the program

Summary

Creating and Using Generic Dictionaries

Adding a show button to the HTML Starting a process from a web page

Making a verbatim string Iterating over key-value pairs

Making a directory and creating a file from Command Prompt Chapter review Summary

Connection Between Delegates and Lambda Expressions

Adding a Show Results button to the HTML Adding delegates

Setting up the variables Making objects of the delegate type Defining lambda expressions Operating an array Working with actions

Chapter review Summary

Expression-Bodied Lambdas and Expression-Bodied Members

Adding a box and a Find Max button to the HTML Making the delegate

Defining an expression-bodied member Converting an array of strings into an array of doubles Creating an expression-bodied lambda Comparing values Specifying the parameters Running the program

Chapter review Summary

Anonymous Methods and Objects That Run Their Own Delegates

Adding a Show Results button to the HTML Streamlining writing functions

Performing an action on all of the values Making an anonymous function or method Starting a thread Running and modifying the program

Chapter review Summary

C# with LINQ and Built-In Types

Adding a Show Values button to the HTML Adding namespaces

Working with the IEnumerable generic interface Converting an array to a list of integers Determining the values in a collection Converting the values back to a list Extracting values from the list and sorting them Running the program

Chapter review Summary

C# with LINQ and Custom Data Types

Adding a Show People button to the HTML Setting up a database

Making a custom type using LINQ Setting up an array of people Querying the array Running the program

Chapter review Summary

Using Query Syntax to Construct Queries

Adding a show button to the HTML Creating a decimal salary array

Working with range variables Selecting a salary range and putting it in descending order Displaying the results

Observing deferred execution

Making a dictionary Working with key-value pairs Querying the data in the key-value pairs Running the program

Chapter review Summary

Queries That Perform Aggregation Functions

Adding a show button to the HTML Creating an array

Averaging the values in a list Displaying the results Using the Count function Working with a list of lists Adding students to the classList Summarizing the information in the classList Running the program

Chapter review Summary

Using LINQ to Summarize Tuples

Adding a show tuple summary values button to the HTML Introducing tuples

Adding namespaces Making a list with a tuple Returning the tuples Making a list of doubles Summarizing the list Displaying the results Running the program

Chapter review Summary

Summarizing Results with Grouping

Adding a Show Results button to the HTML Adding namespaces

Creating the student class and defining fields Making a list of students Grouping names Displaying the grouped results

Chapter review Summary

Joining Datasets with Inner Joins

Adding a Join Classes button to the HTML Adding the namespaces

Creating the person and car classes Making person objects Making car objects Making a list of owners and their cars Joining the owners and car lists Getting and displaying the results Running the program

Chapter review Summary

Downloading, Installing, and Running SQL Server 2017

Downloading SQL Server 2017 express

Selecting the installation type Installing the package

Working with SQL server inside Visual Studio

Creating a SQL server database Adding and defining a table Adding fields to the table Updating the structure of the database

Chapter review Summary

Writing Code to Manually Connect to a Table and Retrieve Records

Adding a show records button to the HTML

Adding a namespace

Making the connection string

Connecting to SQL Server Catching exceptions Displaying errors Opening the connection Working with the SQL Server data reader Running the program

Chapter review Summary

Inserting Records into Tables Using Stored Procedures

Adding text boxes and a button to the HTML Reviewing what you created already in SQL Server

Creating a new stored procedure Updating the database structure Adding a namespace Building the connection string Initializing the connection Catching exceptions Trying out commands Adding the parameters Saving the information for later retrieval Recognizing the role of indexers Running the program

Chapter review Summary

Using the Nullable Feature to Make Apps More Stable

Adding a Show People button to the HTML

Adding a field to the people database Modifying the dbo.People table Writing the code for this project Creating the person class Making the properties Making the list of people Building the connection string Entering the SQL-related code Adding people to the list from the table Displaying the records Running the program

Chapter review Summary

Connecting a Chart Control to SQL Server

Placing a chart into the HTML page

Adding a button to the HTML page

Adding a new table to the People database

Enabling auto-incrementation Adding values to the new table

Coding the project

Adding a namespace Building the connection string Writing a SQL query Making the command object Opening the connection and making a SQL data reader Running the program Modifying the program to display the Y values

Chapter review Summary

Using LINQ to Operate on Tables from SQL Server

Changing the data in the ExperimentValues table

Summarizing the fields Adding the namespaces Building the connection string Making the SQL connection Making an adapter Making a data table Populating the table with data Displaying the summed values Running the program Adding comments

Chapter review Summary

Creating a Page That Saves Text to Disk

Creating an application to save text

Creating the user interface for your project Starting to code the project Catching an exception Creating a StreamWriter class Creating a StreamReader class Running the program

Chapter review Summary

Creating a Page That Uses the File Upload Control

Starting our project from scratch

Adding a namespace Saving a file to a specific location Saving the file Displaying messages to the user Determining which files are stored in a directory Determining the return type Exploring the exceptions for EnumerateFiles Catching the exceptions Running the program

Chapter review Summary

Serializing and Deserializing Objects

Adding two buttons to the HTML

Beginning to code the project Adding namespaces Creating a serializable class Adding features to the serializable class Defining the path for saving a file Making a Person object Handling unmanaged resources Making a binary formatter Serializing an object Testing the program Rebuilding an object from a hard drive Displaying the results Running the program

Chapter review Summary

Having a Little Fun with Images with Pixel Manipulations

Manipulating an image

Adding a button and an image control to the HTML Adding a namespace Making a bitmap Saving an image as a bitmap picture Accessing a pixel's location Manipulating the pixels Converting the picture to a byte array Sending out the image URL Running the program

Chapter review Summary

Saving an Image to SQL Server

Adding buttons and a list box to HTML

Creating a database table to store the files Storing image files on your hard drive Adding namespaces Coding the application Testing the scanning the folder function Building the connection string Using of the connection string Running the program

Chapter review Summary

Creating and Using an XML File

Adding a button to HTML

Coding the XML Adding a namespace Loading the XML file into your program Iterating over the contents of the XML file Displaying the results Running the program

Chapter review Summary

Creating XML Files with C#

Adding a button to HTML

Adding namespaces Coding the XmlWriter settings Writing to the hard drive Formatting the results Running the program

Chapter review Summary

Querying XML Documents with LINQ

Adding a text box and a button to HTML

Adding namespaces Clearing the output Building an element tree Saving the store XML file Testing the program Searching for items that meet a specific criteria Selecting among the items that meet the search criteria Displaying the results Running the program

Chapter review Summary

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