Question

hi i have problem with enum types

I am doing like this….

namspace XXXXXXxx
{
 public partial class form1:form
  {

          ////////
       and i am checking the listview selected item with enum type by the             following code
      private void lstviewcategories_SelectedIndexChanged(object sender, EventArgs e)
      {

          if (lstviewcategories.SelectedItems[0].ToString() == categorytype.type1.ToString())
            { 

                    /////
                       blah blah...
            }
       }
           and  at here i am defining enum like this...
    public enum categorytype
    {
       type1 = "ALL",
         type2 ="0-500",
       type3 ="500-1000" ,
        type4 ="1000+ "                    
    }
  }

}

I am getting error at these lines type1 = “ALL”, t*ype2 =”0-500″,type3 =”500-1000″* ,type4 =”1000+” say cannot implicitly convert type string to int

how can i defined these as enum

how can i access and compare with listviewcategoriesitems…..

would any one pls help on this……

Answer 1

You can’t define enums as string values – enums are effectively named numbers. If you want string constants, you’ll just have to use:

public const string Type1 = "ALL";
public const string Type2 = "0-500";

… etc. If you need an enum for use elsewhere, you could either create a Dictionary<CategoryType, string> and possibly a reverse mapping as well, or decorate each enum value with a string in an attribute (e.g. [Description("ALL")]) which you can retrieve at execution time. It’s slightly awkward, but not too hard.

(Also note that C# is case-sensitive – there’s no class form to derive from, and it’s well worth following the .NET naming conventions to make your code easier to read for other developers.)