Hands-On Design Patterns with C# and .NET Core

IInventoryWriteContext

Likewise, classes requiring to modify the collection of books are updated to the IInventoryWriteContext interface, as illustrated with AddInventoryCommand:

internal class AddInventoryCommand : NonTerminatingCommand, IParameterisedCommand{    private readonly IInventoryWriteContext _context;    internal AddInventoryCommand(IUserInterface userInterface, IInventoryWriteContext context) : base(userInterface)    {        _context = context;    }    public string InventoryName { get; private set; }    ...}

The following shows the detail of the GetParameters and InternalCommand methods:

/// <summary>/// AddInventoryCommand requires name/// </summary>/// <returns></returns>public bool GetParameters(){    if (string.IsNullOrWhiteSpace(InventoryName))