How Can I Keep My DataGridView Updated When Using a List?

Maintaining an Up-to-Date DataGridView with a Binding List

When binding a List to a DataGridView, you may encounter a situation where changes to the list are not reflected in the grid view. Understanding the underlying reason and implementing the appropriate solution is crucial.

Problem Explanation

A List does not implement the IBindingList interface, which provides support for data binding and automatic updates. As a result, the DataGridView cannot detect changes made to the list after the initial binding.

Solution

To resolve this issue, bind the DataGridView to a BindingList instead. A BindingList is a data-aware collection that implements the IBindingList interface, allowing it to notify the DataGridView of changes, ensuring that the grid view always displays the latest data.

Binding to a BindingList

var list = new BindingList<Person>(persons);
myGrid.DataSource = list;

Additional Recommendation

Consider using a BindingSource to further enhance data binding capabilities. A BindingSource acts as an intermediary between the data source (BindingList in this case) and the DataGridView. It provides additional features such as filtering and sorting, and it simplifies data binding management.

Binding to a BindingSource

var list = new List<Person>()
{
    new Person { Name = "Joe", },
    new Person { Name = "Misha", },
};
var bindingList = new BindingList<Person>(list);
var source = new BindingSource(bindingList, null);
grid.DataSource = source;

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