Main eBookManager form

Start off by renaming Form1.cs to eBookManager.cs. This is the start-up form for the application and it will list all the existing storage spaces previously saved:

Design your eBookManager form as follows:

• ListView control for existing storage spaces
• ListView for eBooks contained in selected storage space
• Button that opens the file location of the eBook
• A menu control to navigate to the ImportBooks.cs form
• Various read-only fields to display the selected eBook information

When you have added the controls, your eBook Manager form will look as follows:

Looking at the code we used earlier, you need to ensure that the following using statements are imported:

using eBookManager.Engine; 
using eBookManager.Helper; 
using System; 
using System.Collections.Generic; 
using System.IO; 
using System.Windows.Forms; 
using System.Linq; 
using System.Diagnostics; 

The constructor is quite similar to the ImportBooks.cs form's constructor. It reads any available storage spaces and populates the storage spaces list view control with the previously saved storage spaces:

private string _jsonPath; 
private List<StorageSpace> spaces; 
 
public eBookManager() 
{ 
    InitializeComponent(); 
    _jsonPath = Path.Combine(Application.StartupPath, 
    "bookData.txt"); 
    spaces = spaces.ReadFromDataStore(_jsonPath); 
} 
 
private void Form1_Load(object sender, EventArgs e) 
{             
    PopulateStorageSpaceList(); 
} 
 
private void PopulateStorageSpaceList() 
{ 
    lstStorageSpaces.Clear(); 
    if (!(spaces == null)) 
    { 
        foreach (StorageSpace space in spaces) 
        { 
            ListViewItem lvItem = new ListViewItem(space.Name, 0); 
            lvItem.Tag = space.BookList; 
            lvItem.Name = space.ID.ToString(); 
            lstStorageSpaces.Items.Add(lvItem); 
        } 
    } 
} 

If the user clicks on a storage space, we need to be able to read the books contained in that selected space:

private void lstStorageSpaces_MouseClick(object sender, MouseEventArgs e) 
{ 
    ListViewItem selectedStorageSpace = 
    lstStorageSpaces.SelectedItems[0]; 
    int spaceID = selectedStorageSpace.Name.ToInt(); 
 
    txtStorageSpaceDescription.Text = (from d in spaces 
                                       where d.ID == spaceID 
                                       select 
                                       d.Description).First(); 
 
    List<Document> ebookList = 
     (List<Document>)selectedStorageSpace.Tag; 
     PopulateContainedEbooks(ebookList); 
}

We now need to create the method that will populate the lstBooks list view with the books contained in the selected storage space:

private void PopulateContainedEbooks(List<Document> ebookList) 
{ 
    lstBooks.Clear(); 
    ClearSelectedBook(); 
 
    if (ebookList != null) 
    { 
        foreach (Document eBook in ebookList) 
        { 
            ListViewItem book = new ListViewItem(eBook.Title, 1); 
            book.Tag = eBook; 
            lstBooks.Items.Add(book); 
        } 
    } 
    else 
    { 
        ListViewItem book = new ListViewItem("This storage space 
        contains no eBooks", 2); 
        book.Tag = ""; 
        lstBooks.Items.Add(book); 
    } 
} 

You will notice that each ListViewItem is populated with the title of the eBook and the index of an image in an ImageList control that I added to the form. To find the images in the GitHub repository, browse to the following path:

https://github.com/PacktPublishing/CSharp7-and-.NET-Core-2.0-Blueprints/tree/master/eBookManager/eBookManager/img

Looking at the Images Collection Editor, you will see that I have added them as follows:

We also need to clear the selected book's details when the selected storage space is changed. I have created two group controls around the file and book details. This code just loops through all the child controls, and if the child control is a textbox, it clears it:

private void ClearSelectedBook() 
{ 
    foreach (Control ctrl in gbBookDetails.Controls) 
    { 
        if (ctrl is TextBox) 
            ctrl.Text = ""; 
    } 
 
    foreach (Control ctrl in gbFileDetails.Controls) 
    { 
        if (ctrl is TextBox) 
            ctrl.Text = ""; 
    } 
 
    dtLastAccessed.Value = DateTime.Now; 
    dtCreated.Value = DateTime.Now; 
    dtDatePublished.Value = DateTime.Now; 
} 

The MenuStrip that was added to the form has a click event on the ImportEBooks menu item. It simply opens up the ImportBooks form:

private void mnuImportEbooks_Click(object sender, EventArgs e) 
{ 
    ImportBooks import = new ImportBooks(); 
    import.ShowDialog(); 
    spaces = spaces.ReadFromDataStore(_jsonPath); 
    PopulateStorageSpaceList(); 
} 

The following method wraps up the logic to select a specific eBook and populate the file and eBook details on the eBookManager form:

private void lstBooks_MouseClick(object sender, MouseEventArgs e) 
{ 
    ListViewItem selectedBook = lstBooks.SelectedItems[0]; 
    if (!String.IsNullOrEmpty(selectedBook.Tag.ToString())) 
    { 
        Document ebook = (Document)selectedBook.Tag; 
        txtFileName.Text = ebook.FileName; 
        txtExtension.Text = ebook.Extension; 
        dtLastAccessed.Value = ebook.LastAccessed; 
        dtCreated.Value = ebook.Created; 
        txtFilePath.Text = ebook.FilePath; 
        txtFileSize.Text = ebook.FileSize; 
        txtTitle.Text = ebook.Title; 
        txtAuthor.Text = ebook.Author; 
        txtPublisher.Text = ebook.Publisher; 
        txtPrice.Text = ebook.Price; 
        txtISBN.Text = ebook.ISBN; 
        dtDatePublished.Value = ebook.PublishDate; 
        txtCategory.Text = ebook.Category; 
    } 
} 

Lastly, when the book selected is the one you wish to read, click on the Read eBook button to open the file location of the selected eBook:

private void btnReadEbook_Click(object sender, EventArgs e) 
{ 
    string filePath = txtFilePath.Text; 
    FileInfo fi = new FileInfo(filePath); 
    if (fi.Exists) 
    { 
        Process.Start(Path.GetDirectoryName(filePath)); 
    } 
} 

This completes the code logic contained in the eBookManager application.

It is time to fire up the application and test it out.