About the application technologies and operation:

• Programming Language: C#
• FrontEnd Side: Windows Presentation Foundation (WPF) - .NET 5
• BackEnd Side: .NET 5

1. Restore necessary Packages, run the following command in PM Console

   Update-Package -reinstall
   

The following application represents Notepad in Windows along with it's features.

Application structure:

1. File Menu:

   • New Document - You can create a new document. If you already have a started document, you can save it before you create a new document.
   • Open - Open an existing document. If you already have a started document, you can save it before you open an existing document.
   • Save - You can save your created document. If the document has not been saved yet, you will need to select, through a dialog box, where and under what name the file should be saved. When this is done, clicking the Save Button always saves it in the same file.
   • Save As - You can save your created document to another location and file name.
   • Exit - Close the application.

2. Edit Menu:

   • Redo - Performs an action advance on the document.
   • Undo - Performs an undo operation on the document.
   • Cut - Place selected text on the clipboard. Removes the selected text from the document.
   • Copy - Copy selected text to the clipboard. The selected text will not be removed from the document.
   • Paste - Paste the selected text from the clipboard.
   • Delete - Removes the selected text from the document.
   • Find - Open the 'Find' Sub-Window.
   • Find Next - Searches for the following snippet based on the search criteria specified in 'Find' Sub-Window.
   • Replace - Open the 'Replace' Sub-Window.
   • Go to line - Open the 'Go to line' Sub-Window.
   • Select All - Select the entire contents of the document.
   • Time/Date - Inserts the current date and time into the document.

3. Format Menu:

   • Fonts - Sets the selected font settings for the document.
   • Background Color - Sets the background color selected for the document.
   • Word-Wrap - Adjusts the line break in the document and that the horizontal scroll-bar disappears or appears.

4. Help Menu:

   • About - Open the 'About' Sub-Window.

5. Right mouse button in the document:

   • Redo - Performs an action advance on the document.
   • Undo - Performs an undo operation on the document.
   • Cut - Place selected text on the clipboard. Removes the selected text from the document.
   • Copy - Copy selected text to the clipboard. The selected text will not be removed from the document.
   • Paste - Paste the selected text from the clipboard.
   • Delete - Removes the selected text from the document.
   • Select All - Select the entire contents of the document.

6. 'Search' Sub-Window:

   • Find what - The text to search for.
   • Direction - Search forwards or backwards in the text relative to the cursor position.
   • Match case - Distinguish between upper and lower case letters during the search.
   • Find next - Search for the text you want to search for, based on user-defined search criteria.
   • Cancel - Close the window.

7. 'Replace' Sub-Window:

   • Find what: Text to replace.
   • Replace with: The replacement text.
   • Match case - Distinguish between upper and lower case letters during the search.
   • Find next - Search for the text you want to search for, based on user-defined search criteria.
   • Replace - Replace found text with user-defined text.
   • Replace All - Finds the user-specified text snippet in the document and replaces it with the user-specified text to replace.
   • Cancel - Close the window.

8. 'Go to line' Sub-Window:

   • Line Number - Move the cursor to the line in the document.
   • Go to - Jumps to the specified sequence number.
   • Cancel - Close the window.