How do I implement automatic sorting of DataGridView?

Question

I am programmatically adding columns to a DataGridView and then binding to a list. By default, the SortMode of the columns are Automatic. But when I run my app, clicking on the headers does nothing. The up/down arrows aren't showing up. From reading MSDN, not much is said about automatic sorting. They go into more detail about programmatic sorting. So, I'm assuming the automatic way should be easy. MSDN goes on to say "Unless column headers are used for selection, clicking the column header automatically sorts the DataGridView by this column and displays a glyph indicating the sort order." What exactly does that mean? Could I be setting a grid property that conflicts with the sorting? What am I missing?

AutoGenerateColumns = false;
AllowUserToAddRows = false;
AllowUserToDeleteRows = false;
AllowUserToResizeRows = false;
AllowUserToResizeColumns = false;
ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.DisableResizing;
ReadOnly = true;
MultiSelect = false;
RowHeadersVisible = false;
SelectionMode = DataGridViewSelectionMode.FullRowSelect;
CellBorderStyle = DataGridViewCellBorderStyle.None;


    DataGridViewTextBoxColumn idColumn = new DataGridViewTextBoxColumn();
    idColumn.HeaderText = "ID";
    idColumn.DataPropertyName = "IDNumber";

    DataGridViewTextBoxColumn nameColumn = new DataGridViewTextBoxColumn();
    nameColumn.HeaderText = "Name";
    nameColumn.DataPropertyName = "Description";

    DataGridViewTextBoxColumn lastModifiedColumn = new DataGridViewTextBoxColumn();
    lastModifiedColumn.HeaderText = "Last Modified";
    lastModifiedColumn.DataPropertyName = "Date";

    Columns.Add(idColumn);
    Columns.Add(nameColumn);
    Columns.Add(lastModifiedColumn);

    List<IMyObject> bindingList = GetMyList();
    DataSource = bindingList;

Answer 1

Try this out:-

http://msdn.microsoft.com/en-us/library/95scxcdy.aspx