Problems with enums in Chapter 8

tmulher · May 15th, 2015, 12:11 PM

Two things:

1) I got a compile error having a class named Direction and an enum within it named Direction. "The name conflicts with the name of a nested type". I changed the class to MyEnums.

2) I get an error defining DisplayDirection as a Direction:

Compiler Error Message: CS0246: The type or namespace name 'Direction' could not be found (are you missing a using directive or an assembly reference?)

If I qualify it (MyEnums.Direction) the error goes away. I tried closing VS and relaunching it but the compile error remains. I can't see what I'm doing wrong.

Code:

public class MyEnums
{
    public enum Direction
    {
        Horizontal = 0,
        Vertical = 1
    }
}

protected void Page_Load(object sender, EventArgs e)
{
    switch (DisplayDirection)
    {
        case MyEnums.Direction.Horizontal:
            HorizontalPanel.Visible = true;
            VerticalPanel.Visible = false;
            break;
        case MyEnums.Direction.Vertical:
            VerticalPanel.Visible = true;
            HorizontalPanel.Visible = false;
            break;
    }   
 }
    public Direction DisplayDirection { get; set; }

Imar · May 15th, 2015, 05:42 PM

Hi there,

Looks like you missed part of step 2 on page 286:

"Once the file opens, clear its contents and add the following code to it:"

It seems that instead of clearing the file, you nested the enum inside the class. It also works, but a) the class can't have the same name as the nested enum, and b) you need to prefix the enum with the class name.

There's not much point (in this case) in doing so, so make sure your enum file only contains this:

Code:

public enum Direction
{
  Horizontal,
  Vertical
}

Cheers,

Imar