.NET Windows Forms in a Nutshell

Name

CurrencyManager

Synopsis

This class represents a bag of Binding objects for a list-like data source. List-like objects (such as arrays, collections, and System.Data.DataTable objects) implement IList, System.ComponentModel.IListSource, or System.ComponentModel.IBindingList. Compare this with PropertyManager that deals with simple properties.

It maintains the concept of the Current item in the list. When the current item is changed (by setting the Position property, or because the System.ComponentModel.IBindingList.ListChanged event was raised), all the objects bound to the data source through the Binding objects are updated with the new value. (See Binding for details on how this update can be controlled through the Parse and Format events).

Note that the standard controls such as ListBox and DataGrid will update the Position automatically as the UI selection changes.

See Binding for more information on the data-binding hierarchy.

public class CurrencyManager : BindingManagerBase {

// Protected Instance Fields

   protected Type finalType;

   protected int listposition;

// Public Instance Properties

   public override int Count{get; } // overrides BindingManagerBase

   public override object Current{get; } // overrides BindingManagerBase

   public IList List{get; }

   public override int Position{set; get; } // overrides BindingManagerBase

                  // Public Instance Methods

   public override void AddNew();  // overrides BindingManagerBase

   public override void CancelCurrentEdit();  // overrides BindingManagerBase ...