C# 8 and .NET Core 3 Projects Using Azure - Second Edition

The ImportBooks form

The ImportBooks form does exactly what the name suggests. It allows us to create virtual storage spaces and to import books into those spaces. The form design is as follows:

TreeView controls are prefixed with tv, buttons with btn, combo boxes with dl, textboxes with txt, and date time pickers with dt. Although this kind of prefixing isn't widely used today, this used to be a common practice for WinForms developers. The reason behind it is that WinForms never really lent itself very well to a separation of business and presentation layers (there have been attempts to rectify this, notably with the MVP pattern), meaning ...