Hi,
I am using SortedList, but I am having problems with indexing.
SortedList x = new SortedList();
x.Add(0, "zero");
x.Add(1, "one");
x.Add(3, "three");
Console.WriteLine(x[x.IndexOfKey(0)].ToString());
Console.WriteLine(x[x.IndexOfKey(1)].ToString());
int index = x.IndexOfKey(3);
Console.WriteLine(index);
Console.ReadLine();
Console.WriteLine(x[index].ToString());
The first two writeline work ok, but when I try to retrieve the index
of the key 3, Index of 2 is returned.
Now when I try to use this index(ie index=2) to retrieve the data from
the sortedList, a NullReferenceException is given.
Can someone help me out.
Thanks in Advance 2 1504
Curious wrote: Hi,
I am using SortedList, but I am having problems with indexing.
SortedList x = new SortedList();
x.Add(0, "zero"); x.Add(1, "one"); x.Add(3, "three"); Console.WriteLine(x[x.IndexOfKey(0)].ToString()); Console.WriteLine(x[x.IndexOfKey(1)].ToString()); int index = x.IndexOfKey(3); Console.WriteLine(index); Console.ReadLine(); Console.WriteLine(x[index].ToString());
The first two writeline work ok, but when I try to retrieve the index of the key 3, Index of 2 is returned.
Now when I try to use this index(ie index=2) to retrieve the data from the sortedList, a NullReferenceException is given.
..Item, the indexer property of a SortedList, takes a *key*, not an
index. Therefore when you ask for x[2] you are asking for the value
associated with the *key* 2 - there isn't one, so you get null back.
To get by index, use the .GetByIndex method.
--
Larry Lard
Replies to group please
Thanks, infact it requests for the object key in the indexer property This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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