Listview control not sorting correctly, is it becuase it's a numer

[Guest]

Hi, I'm using vs2005, .net 2 for C# windows application.
One of my column on the Listview control has numericstring. Other columns
are sorting correctly except this one. It seems to be sorting the 1st
numeric char at the beging of the string. How do I resolve this problem?
Thank you?

 

[Arunkumar Keserla]

You could implement the IComparer interface & use an ArrayList to store the
contents that are used to populate the ListBox, now pass the comparer when
using the Sort method.



public class MyComparer : IComparer
{
/*
Less than zero
x is less than y.

Zero
x equals y.

Greater than zero
x is greater than y.
*/

public int Compare(object x, object y)
{
int nx = Int32.Parse((string)x);
int ny = Int32.Parse((string)y);
return nx.CompareTo(ny);

}
}


I see that your listbox is a numeric string, so you can implement your custom
logic in the Compare method above.

-Arun

 

[Guest]

Thank you for the help but I don't know what do you mean by "pass the
comparer when using the Sort method"? ( I assume the Sort method of the
Listview is what is referred here). What am I doing with the arraylist? Do
I call the compare method to sort out the array?
Thanks.

 

[Arunkumar Keserla]

Check out MSDN @ http://msdn2.microsoft.com/en-us/li...forms.listview.listviewitemsorter(vs.80).aspx.
The comparer example I gave was is pretty close to the full blown example
listed in MSDN. You will need your custom comparer to do comparisons in a
way that is different from the default behavior. The snippet I gave was actually
for a ListBox rather than a ListView

-Arun

 

[Guest]

Hi,
I have created a public class based on IComparer. But, I'm not able to
access the inherited public property "Order" to set the sorting order. When
I type the sortclss. I get no "Order" property in the drop down. How can I
set the sorting order of this sort class object? Thank you.
p.s. Other than the sort order, everyting else is working correctly

 

[Guest]

Ok, got that resovle. I added a public order property and it's working fine
now. Thank you very much