Hi There.
I have a SortedList collection that I add objects of a custom class
to. Rather then explain my app, my question is pretty general so....
Using a simple clsDog:
*************** ************
clsDog boomer = new clsDog();
clsDog spot = new clsDog();
clsDog benjy = new clsDog();
SortedList listPets = new SortedList();
listPets.Add ("boomer", boomer);
listPets.Add ("spot", spot);
listPets.Add ("benjy", benjy);
*************** *************
So, at this point my list has sorted itself and I can verify the
indexes are good (ie, benjy is at index 0, boomer is at 1, spot is at
2).
I realize that the .GetByIndex method has an "object" return type. So,
my understanding is that if I want to return the object at the 1st
index I'd use:
thisDog = (clsDog)listPet s.GetByIndex(1) ;
Unfortunately, this theory is not working out as it appears no matter
the Index that I ask for the collection will always seem to return the
last object I touched (in the above example object benjy is ALWAYS
returned, even though I return the proper key for the 1st index of
"boomer").
I understand that there might be other issues, but after wasting much
of the afternoon I just wanted to make sure I was on the correct
track.
Thanks
Jason 2 2145
arby <go***@yahoo.co m> wrote: I have a SortedList collection that I add objects of a custom class to. Rather then explain my app, my question is pretty general so....
Using a simple clsDog:
*************** ************ clsDog boomer = new clsDog(); clsDog spot = new clsDog(); clsDog benjy = new clsDog();
SortedList listPets = new SortedList(); listPets.Add ("boomer", boomer); listPets.Add ("spot", spot); listPets.Add ("benjy", benjy); *************** *************
So, at this point my list has sorted itself and I can verify the indexes are good (ie, benjy is at index 0, boomer is at 1, spot is at 2).
I realize that the .GetByIndex method has an "object" return type. So, my understanding is that if I want to return the object at the 1st index I'd use:
thisDog = (clsDog)listPet s.GetByIndex(1) ;
Unfortunately, this theory is not working out as it appears no matter the Index that I ask for the collection will always seem to return the last object I touched (in the above example object benjy is ALWAYS returned, even though I return the proper key for the 1st index of "boomer").
With your code, I can't reproduce the problem. Here's a short but
complete program which *doesn't* demonstrate the problem, but appears
to be basically the same as your code:
using System;
using System.Collecti ons;
public class Dog
{
string name;
public Dog (string name)
{
this.name = name;
}
public override string ToString()
{
return name;
}
}
public class Test
{
static void Main()
{
Dog boomer = new Dog("boomer");
Dog spot = new Dog("spot");
Dog benjy = new Dog("benjy");
SortedList pets = new SortedList();
pets.Add("boome r", boomer);
pets.Add("spot" , spot);
pets.Add("benjy ", benjy);
Console.WriteLi ne (pets.GetByInde x(1));
}
}
(Output is "boomer" as expected, rather than "benjy" as you suggest.)
Please post a similar short but complete program which *does*
demonstrate the problem.
--
Jon Skeet - <sk***@pobox.co m> http://www.pobox.com/~skeet
If replying to the group, please do not mail me too
Hi John,
Thanks for the response. Actually, late last night I discovered the
issue and it was unrelated to the list, rather the object getting
passed to the list was never get changed - although the key was
(basically a bug on my end).
Thanks
Jason
Jon Skeet [C# MVP] <sk***@pobox.co m> wrote in message news:<MP******* *************** **@msnews.micro soft.com>... arby <go***@yahoo.co m> wrote: I have a SortedList collection that I add objects of a custom class to. Rather then explain my app, my question is pretty general so....
Using a simple clsDog:
*************** ************ clsDog boomer = new clsDog(); clsDog spot = new clsDog(); clsDog benjy = new clsDog();
SortedList listPets = new SortedList(); listPets.Add ("boomer", boomer); listPets.Add ("spot", spot); listPets.Add ("benjy", benjy); *************** *************
So, at this point my list has sorted itself and I can verify the indexes are good (ie, benjy is at index 0, boomer is at 1, spot is at 2).
I realize that the .GetByIndex method has an "object" return type. So, my understanding is that if I want to return the object at the 1st index I'd use:
thisDog = (clsDog)listPet s.GetByIndex(1) ;
Unfortunately, this theory is not working out as it appears no matter the Index that I ask for the collection will always seem to return the last object I touched (in the above example object benjy is ALWAYS returned, even though I return the proper key for the 1st index of "boomer").
With your code, I can't reproduce the problem. Here's a short but complete program which *doesn't* demonstrate the problem, but appears to be basically the same as your code:
using System; using System.Collecti ons;
public class Dog { string name;
public Dog (string name) { this.name = name; }
public override string ToString() { return name; } }
public class Test { static void Main() { Dog boomer = new Dog("boomer"); Dog spot = new Dog("spot"); Dog benjy = new Dog("benjy");
SortedList pets = new SortedList(); pets.Add("boome r", boomer); pets.Add("spot" , spot); pets.Add("benjy ", benjy);
Console.WriteLi ne (pets.GetByInde x(1)); } }
(Output is "boomer" as expected, rather than "benjy" as you suggest.)
Please post a similar short but complete program which *does* demonstrate the problem. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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