datagrid wpf checkbox select all

Question

I have a ready-made project in which I added a checkbox column, now I want to click on the header to select all the checkbox.

for example, I used this code https://stackoverflow.com/a/48990131/11732842

DataGrid is populated through AutoGeneratingColumn

private void MainDG_AutoGeneratingColumn(object sender, DataGridAutoGeneratingColumnEventArgs e)
        {
            Wpf.DGSetDateFormat(e);
            if (e.Column is DataGridCheckBoxColumn && e.Column.Header.ToString()== "IsCheced")
            {
                var checkboxFactory = new FrameworkElementFactory(typeof(CheckBox));
                checkboxFactory.SetValue(FrameworkElement.HorizontalAlignmentProperty, HorizontalAlignment.Center);
                checkboxFactory.SetValue(FrameworkElement.VerticalAlignmentProperty, VerticalAlignment.Center);
                checkboxFactory.SetBinding(ToggleButton.IsCheckedProperty, new Binding(e.PropertyName) { UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged, Path = ViewModel.AllSelected });

                e.Column = new DataGridTemplateColumn
                {
                    Header = e.Column.Header,
                    CellTemplate = new DataTemplate { VisualTree = checkboxFactory },
                    SortMemberPath = e.Column.SortMemberPath
                };
            }
        }

error Path = ViewModel.AllSelected: failed to explicitly convert the bool type to path

Answer 1

You are supposed to set the Path property to an actual binding path, or not set it all since you pass a path to the constructor when you create the binding:

checkboxFactory.SetBinding(ToggleButton.IsCheckedProperty, 
    new Binding(e.PropertyName) { UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged });

The CheckBox in the "IsCheced" column should bind to the IsCheced (did you misspell "checked") property. The CheckBox in the header should bind to the property of the view model:

checkboxHeaderFactory.SetBinding(ToggleButton.IsCheckedProperty, 
    new Binding(nameof(ViewModel.AllSelected))
    { 
        UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged,
        Source = DataContext
    });