How to refresh/reload datagrid in WPF?

Question

I want to implement a datagrid, which will be filled every 5min.

But, first code: XAML:

Answer 1

dataGrid1.Items.refresh();

to update the contents of DataGrid

Answer 2

I gues this cause binding is not aware that you changed collection. I would suggest, or:

• Clear and after populate a collection previously binded to grid with a new data (the same collection, as in GetEmployees() you every time create a new one.

or

• Before assigning new collection try to assign to DataContext null or an empty collection and after actually assign a new one.

or

EDIT

 ObservableEmployee <UIEmployee> list = new ObservableEmployee <UIEmployee>(); //move list to global variables and declare it as ObservableCollection
 public ObservableEmployee GetEmployees()
    {

       //here only return an instance of list
       return list;

    }

//this method call when you want to update data on gri
public void UpdateMyList() {

     //clear list 
     list.Clear();

     //after add all data
     list.Ad(..);
     list(..); 
     .
     .

}

• Use UpdateTarget like provided in folowing example: DataBinding Refresh in WPF

Answer 3

Or, you could just null ItemsSource out and initialised it again:

dataGridView.ItemsSource = null;
dataGridView.ItemsSource = ItemsSourceObjects;