I am a beginner.
I am developing a program in C# with Visual Studio and Forms. My Form has a DataGridView linked to a BindingList. I would like to be able to sort rows by clicking a column header.
I set the SortMode to Automatic, but it doesn’t work : there’s no glyph in the column header and clicking on it won’t sort the rows.

Here is my code :

public class SimpleTask
{
    public string Title { get; set; }
    public string CategoryName { get; set; }
}

//Code in my Form :
BindingSource tasksBinding = new BindingSource();

//uiTaskGridView is the name of my DataGridView
uiTaskGridView.AutoGenerateColumns = false;

//add one column
var taskNameColumn = new DataGridViewTextBoxColumn
{
    DataPropertyName = "Title",
    HeaderText = "Titre",
    Width = 300,
    Resizable = DataGridViewTriState.False,
    SortMode = DataGridViewColumnSortMode.Automatic
};
uiTaskGridView.Columns.Add(taskNameColumn);

//create bindinglist and populate
var bindingList = new BindingList<SimpleTask>();
bindingList.Add(new SimpleTask { Title = "Complete project", CategoryName = "Work" });
bindingList.Add(new SimpleTask { Title = "Buy groceries", CategoryName = "Personal" });

tasksBinding.DataSource = bindingList;

uiTaskGridView.DataSource = tasksBinding;

Result is :

enter image description here

Anybody can tell me why I can’t sort the “Title” column?

Thanks a lot.