Enumeration Members [Resolved]

[StrangerInBeijing]

Can one loop through an enumeration in code? Or write something to get a random member of the enumeration?

For instance. I'm testing this treeview control. Got many borderstyles. So just want to add a button and when i click it, set the borderstyle to anoter on in the Borderstyle enumeration

[DeadEyes]

you can use the getNames method to get a list of the items in an enum

public enum testE
	{
		ItemOne,
		ItemTwo,
		ItemThree
	}
...
foreach(string s in Enum.GetNames(typeof(testE)))
            	Console.WriteLine(s);
...

[StrangerInBeijing]

Thanks DE, but I'm a bit stuck again.....

 foreach (string s in Enum.GetNames(typeof (System.Web.UI.WebControls.BorderStyle)))
 {
   TreeView1.BorderStyle = ...what do in do here????
   System.Threading.Thread.Sleep(1000);

 }

[DeadEyes]

use the getNames to get a string array you can use the lenght of the array to determine the number of elements in the enum then while less than length:
TreeView1.BorderStyle++;

[DeadEyes]

sod that above this is nicer

foreach(string s in Enum.GetNames(typeof(BorderStyle))){
    treeView1.BorderStyle = (BorderStyle)Enum.Parse(typeof(BorderStyle),s,true);
    Thread.Sleep(1000);
}

[StrangerInBeijing]

Thanx a lot! I will try it out first thing in the AM.
Right now diggin into this asp.net 2 book (why do they always change things so much...grrrrrr)

Thanx again hey!

cheers

[StrangerInBeijing]

Yes, it works cool! I mean when I check the TreeView's borderstyle property when stepping through code.

Got another question about this, but don't know if it's relevant, as this Treeview is not the one in your toolbox, but one that the team I'm in are testing.

Q: How do you refresh the treeview after you changed the borderstyle? It does change in code, but you cannot see the change on your web page. There are no refresh method I'm used to in VB, and also I never did webpages....complete noob!

[DeadEyes]

Can't help you with that one, my knowledge of ASP.Net is zero.

[StrangerInBeijing]

welcome to the club.. ..gonna get me a normal desktop app job as soon as I get this C# under the knee!

But thanx a lot for your help.

[StrangerInBeijing]

It's been a while, but I wrote some stuff today that uses this.

Works sweet.

uuuuh....Now how do I convert a string (say "Dotted") back to the enumeration member (System.Web.UI.WebControls.BorderStyle.Dotted) ?

Hope it's not too easy, otherwise I'm look like an ass......nevermind....allready look like an ass

[StrangerInBeijing]

this does give me an error...

    BorderStyle MyStyle = Enum.Parse(typeof (BorderStyle), sSel);
    TreeView1.BorderStyle = MyStyle;

Error 2 Cannot implicitly convert type 'object' to 'System.Web.UI.WebControls.BorderStyle'. An explicit conversion exists (are you missing a cast?) c:\inetpub\wwwroot\WebPages\TreeView\BorderStyles.aspx.cs 28 27 http://localhost/WebPages/

[DeadEyes]

Well Eeyore,
The compiler asks "are you missing a cast?"
The Parse method returns an object which must be converted to the appropriate Enum.

BorderStyle MyStyle = (BorderStyle)Enum.Parse(typeof (BorderStyle), sSel);