Custom class bound to a DataGridView: how to sort?

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I searched CP, and could not find anything that was useful. Here is my issue:

I have a custom class, NetworkGroup, representing data on security groups from Active Directory. Nothing fancy, just the display name, description, path and a value stored in extensionattribute10. A second class, NetworkGroupList, inherits from List(Of NetworkGroup).

I am using an instance of NetworkGroupList as the data source for a read-only DataGridView and it works fine, with one annoyance: clicking on the column headers does not sort the data. The SortMode property on the columns are set to Automatic by default; I have gone so far as to set them programmatically. Makes no difference: my class lacks some functionality that allows the grid to auto-sort by column. Similar grids bound to DataTable objects sort just fine, and I have considered manually copying the list into a table and using that, which seems overkill. I have tinkered with the BindableList(Of T) class, with no luck: documentation is very spotty, and for the work involved, it seems that building a data table would be much easier.

Any suggestions on how to proceed?

Posted 8-Jun-12 5:50am

Gregory Gadow

Updated 8-Jun-12 5:51am

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Amund Gjersøe 8-Jun-12 17:16pm

You are looking for an implementation of SortableBindingList<>. There are many examples found on the web. I've used one i pull of the web, and it worked like a charm as long as the properties of T supports IComparable

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John Orendt · Answer 1 · 2012-06-08T08:03:00

I looked at some of my old projects that use DataGridView and sort nicely.

They all use DataTable

DataTable dt;
DataSet ds;
DataGridView mDgv;
dt=ds.Tables[ixTbl];
mDgv.DataSource =dt;

C#

DataTable dt; 
DataSet ds;
DataGridView mDgv;
dt=ds.Tables[ixTbl];
mDgv.DataSource =dt;

So yes build that DataTable.