How to enable DataGridView sorting when user clicks on the column header?

Question

I have a datagridview on my form and I populate it with this:

dataGridView1.DataSource = students.Select(s => new { ID = s.StudentId, RUDE = s.RUDE, Nombr         


        

Answer 1

If you get an error message like

An unhandled exception of type 'System.NullReferenceException' occurred in System.Windows.Forms.dll

if you work with SortableBindingList, your code probably uses some loops over DataGridView rows and also try to access the empty last row! (BindingSource = null)

If you don't need to allow the user to add new rows directly in the DataGridView this line of code easily solve the issue:

InitializeComponent();
m_dataGridView.AllowUserToAddRows = false; // after components initialized
...