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    <p>I recall having issues finding something that would work when I added sorting to my datagrids too. You can implement a sortable bindable list by first adding the following class to your project. It is a list implementation that implements <code>BindingList&lt;T&gt;</code>, so that you can bind your datagrid to it, and it also supports sorting. A better explanation of the details than I could give is on <a href="http://msdn.microsoft.com/en-us/library/aa480736.aspx" rel="noreferrer">MSDN here</a></p> <pre><code>public class SortableBindingList&lt;T&gt; : BindingList&lt;T&gt; { private ArrayList sortedList; private ArrayList unsortedItems; private bool isSortedValue; public SortableBindingList() { } public SortableBindingList(IList&lt;T&gt; list) { foreach (object o in list) { this.Add((T)o); } } protected override bool SupportsSearchingCore { get { return true; } } protected override int FindCore(PropertyDescriptor prop, object key) { PropertyInfo propInfo = typeof(T).GetProperty(prop.Name); T item; if (key != null) { for (int i = 0; i &lt; Count; ++i) { item = (T)Items[i]; if (propInfo.GetValue(item, null).Equals(key)) return i; } } return -1; } public int Find(string property, object key) { PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(typeof(T)); PropertyDescriptor prop = properties.Find(property, true); if (prop == null) return -1; else return FindCore(prop, key); } protected override bool SupportsSortingCore { get { return true; } } protected override bool IsSortedCore { get { return isSortedValue; } } ListSortDirection sortDirectionValue; PropertyDescriptor sortPropertyValue; protected override void ApplySortCore(PropertyDescriptor prop, ListSortDirection direction) { sortedList = new ArrayList(); Type interfaceType = prop.PropertyType.GetInterface("IComparable"); if (interfaceType == null &amp;&amp; prop.PropertyType.IsValueType) { Type underlyingType = Nullable.GetUnderlyingType(prop.PropertyType); if (underlyingType != null) { interfaceType = underlyingType.GetInterface("IComparable"); } } if (interfaceType != null) { sortPropertyValue = prop; sortDirectionValue = direction; IEnumerable&lt;T&gt; query = base.Items; if (direction == ListSortDirection.Ascending) { query = query.OrderBy(i =&gt; prop.GetValue(i)); } else { query = query.OrderByDescending(i =&gt; prop.GetValue(i)); } int newIndex = 0; foreach (object item in query) { this.Items[newIndex] = (T)item; newIndex++; } isSortedValue = true; this.OnListChanged(new ListChangedEventArgs(ListChangedType.Reset, -1)); } else { throw new NotSupportedException("Cannot sort by " + prop.Name + ". This" + prop.PropertyType.ToString() + " does not implement IComparable"); } } protected override void RemoveSortCore() { int position; object temp; if (unsortedItems != null) { for (int i = 0; i &lt; unsortedItems.Count; ) { position = this.Find("LastName", unsortedItems[i].GetType(). GetProperty("LastName").GetValue(unsortedItems[i], null)); if (position &gt; 0 &amp;&amp; position != i) { temp = this[i]; this[i] = this[position]; this[position] = (T)temp; i++; } else if (position == i) i++; else unsortedItems.RemoveAt(i); } isSortedValue = false; OnListChanged(new ListChangedEventArgs(ListChangedType.Reset, -1)); } } public void RemoveSort() { RemoveSortCore(); } protected override PropertyDescriptor SortPropertyCore { get { return sortPropertyValue; } } protected override ListSortDirection SortDirectionCore { get { return sortDirectionValue; } } } </code></pre> <p>With that in place, the only changes you need to make to the code that you have posted above is to create a SortableBindingList based on your list and bind to the sortable list, rather than the standard one, like so:</p> <pre><code>List&lt;MyClass&gt; list = new List&lt;MyClass&gt;(); list.Add(new MyClass("Peter", 1202)); list.Add(new MyClass("James", 292)); list.Add(new MyClass("Bond", 23)); // Added sortable list... SortableBindingList&lt;MyClass&gt; sortableList = new SortableBindingList&lt;MyClass&gt;(list); BindingSource bs = new BindingSource(); bs.DataSource = sortableList; // Bind to the sortable list </code></pre> <p>And that will be enough to get you going.</p>
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    1. COcool this is it!!! (+1A)
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