I'm porting code from VS 2003 to VS 2005, and can't get column sorting
to work as before. This is code I found somewhere and used without
acctually understanding it. I still don't fully understand it, which
makes it hard to see what's wrong now. In VS 2003, it allowed me to
click on a ListView column to get the list contents sorted on that column.
private void listView1_ColumnClick(object sender,
ColumnClickEventArgs e)
{
this.listView1.ListViewItemSorter =
new ListViewItemComparer(e.Column);
}
class ListViewItemComparer : IComparer<object>
{
private int col;
public ListViewItemComparer()
{
col = 0;
}
public ListViewItemComparer(int col)
{
this.col = col;
}
public int Compare(object x, object y)
{
return String.Compare(((ListViewItem)x).SubItems[col].Text,
((ListViewItem)y).SubItems[col].Text);
}
}
What happens now is that I get an error here:
this.listView1.ListViewItemSorter =
new ListViewItemComparer(e.Column);
that says:
Cannot implicitly convert type 'MyNamespace.ListViewItemComparer' to
'System.Collections.IComparer'. An explicit conversion exists (are you
missing a cast?)
On this line:
class ListViewItemComparer : IComparer<object>
I added the "<object>" part to get VS to accept it. As can be seen, I'm
clueless about things ending with <>, and for now, I'm quite happy with
the cut-and-paste programming. Just hope someone can spot the error.
Gustaf
