How to update the contents of a DataTable row in the background

Backstage these days have been looking for binding after the background to modify the DataTable row this code, found little, but also have to achieve such a function, through the help of the search, their own solution:

I'm binding the DataTable to a ListBox, modifying the ListBox to modify the hash table value

ListBox1. BeginUpdate (); Stop the ListBox from drawing while items are added.
DataTable DT;
int Indexnum=listbox1. SelectedIndex;
Dt= (DataTable) ListBox1. DataSource;
DataRow custrow = dt. Rows[indexnum];
Custrow.beginedit ();
Custrow[0] = Indexnum;
custrow[1]= "after modify";
Custrow.endedit ();
Dt. AcceptChanges ();
ListBox1. EndUpdate ()//end the update process and force a repaint the ListBox.
ListBox1. Update ();

ListBox1. BeginUpdate (); Stop the ListBox from drawing while items are added.
DataTable DT;
int Indexnum=listbox1. SelectedIndex;
Dt= (DataTable) ListBox1. DataSource;
DataRow custrow = dt. Rows[indexnum];
Custrow.beginedit ();
Custrow[0] = Indexnum;
custrow[1]= "after modify";
Custrow.endedit ();
Dt. AcceptChanges ();
ListBox1. EndUpdate ()//end the update process and force a repaint the ListBox.
ListBox1. Update ();