WISE OWL EXERCISES
VISUAL C# EXERCISES
- Creating forms (4)
- Coding form events (1)
- Laying out your code (2)
- C# variables (4)
- Enumerations and constants (2)
- Conditions (2)
- Modular code (3)
- Arrays (2)
- Looping (2)
- Files and folders (3)
- Properties in C# (3)
- Using lists (3)
- Validating forms (6)
- Toolbars, menus and status bars (1)
- FileDialogs and StreamReaders (1)
- Debugging and trapping errors (1)
- Introduction to DataGridViews (1)
- DataGridView events (3)
- Complex DataGridViews (2)
- Creating classes (4)
- The form as a class (1)
- Data structures (6)
- Inheritance (5)
- Interfaces (2)
- Delegates and events (2)
- Writing LINQ (2)
- Advanced LINQ (2)
- Entity Frameworks (1)
- LINQ with Entity Frameworks (4)
- Grouping using LINQ (2)
- LINQ to SQL (2)
Visual C# | Files and folders exercise | Write out dating agency application details to a text file
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To avoid having to draw the form needed for this exercise, right-click on the name of your project in Solution Explorer then choose Add --> Existing Item... (you can also press SHIFT + ALT + A to do the same thing).
Choose only the file called frmApplication.cs in the above folder to import it into your project (you may need to overwrite existing files as you do this), then edit Program.cs to make this the default form. When you run your application, you should now see this:
This form already includes full validation.
The names of the controls are conveniently shown in the screen shot above!
The Apply button as it stands validates all of the data entered, then currently calls a routine which is commented out:
// if we get here, it's OK to do something with this data - so write out
// values entered to text file
Uncomment this procedure call, then write it! The writeFormData routine should write out to a text file all of an applicant's details. Here's what this text file might look like after you've written out a few records:
Kermit, gay? Surely not?
When you've got this working, close down your application and any open forms.