public void NestedPropertyListChangedEventsTest()
{
// Create a NestedBindingList
var list = new NestedBindingList <Person>(1);
Assert.Equal(5, list.ItemProperties.Count);
// Listen for change events
var raised = false;
ListChangedType change = default(ListChangedType);
string propname = null;
list.ListChanged += (s, a) =>
{
raised = true;
change = a.ListChangedType;
if (a.PropertyDescriptor != null)
{
propname = a.PropertyDescriptor.Name;
}
};
// Add a new item
var p = new Person()
{
Address = new Address()
};
list.Add(p);
Assert.True(raised);
Assert.Equal(ListChangedType.ItemAdded, change);
raised = false;
// Set a value
p.Name = "Fred";
Assert.True(raised);
Assert.Equal(ListChangedType.ItemChanged, change);
Assert.Equal("Name", propname);
raised = false;
propname = null;
// Set nested properties
p.Address.City = new City();
Assert.True(raised);
Assert.Equal(ListChangedType.ItemChanged, change);
Assert.Equal("Address.City", propname);
raised = false;
propname = null;
// Set a nested property deeper than the PropertyBindingDepth
p.Address.City.Name = "Blahville";
Assert.False(raised);
// Remove the item
list.Remove(p);
Assert.True(raised);
Assert.Equal(ListChangedType.ItemDeleted, change);
raised = false;
// Changing a property on the removed item won't raise event
p.Name = "Fredrick";
Assert.False(raised);
// Add a few new items
list.Add(new Person()
{
Address = new Address()
{
City = new City()
}
});
list.Add(new Person());
list.Add(null); // Null value
raised = false;
// Change the PropertyBindingDepth
list.PropertyBindingDepth = 0;
Assert.True(raised);
Assert.Equal(ListChangedType.Reset, change);
raised = false;
// Change a property and make sure it still raises the event
list[0].Name = "Bill";
Assert.True(raised);
Assert.Equal(ListChangedType.ItemChanged, change);
Assert.Equal("Name", propname);
raised = false;
propname = null;
// Set a nested property deeper than the new PropertyBindingDepth
// but within the old depth shouldn't raise the event
list[0].Address.Street = "23 Foo Ave";
Assert.False(raised);
// Remove a null value
list.RemoveAt(2);
Assert.True(raised);
Assert.Equal(ListChangedType.ItemDeleted, change);
raised = false;
// Replace a value
p = list[1];
list[1] = new Person();
Assert.True(raised);
Assert.Equal(ListChangedType.ItemChanged, change);
raised = false;
// Old item doesn't raise events
p.Name = "Bob";
Assert.False(raised);
// New item does
list[1].Name = "Sherrie";
Assert.True(raised);
Assert.Equal(ListChangedType.ItemChanged, change);
Assert.Equal("Name", propname);
raised = false;
propname = null;
// Clear the list
list.Clear();
Assert.True(raised);
Assert.Equal(ListChangedType.Reset, change);
}
public void NestedPropertyListChangedEventsTest()
{
// Create a NestedBindingList
var list = new NestedBindingList<Person>(1);
Assert.Equal(5, list.ItemProperties.Count);
// Listen for change events
var raised = false;
ListChangedType change = default(ListChangedType);
string propname = null;
list.ListChanged += (s, a) =>
{
raised = true;
change = a.ListChangedType;
if (a.PropertyDescriptor != null)
propname = a.PropertyDescriptor.Name;
};
// Add a new item
var p = new Person() { Address = new Address() };
list.Add(p);
Assert.True(raised);
Assert.Equal(ListChangedType.ItemAdded, change);
raised = false;
// Set a value
p.Name = "Fred";
Assert.True(raised);
Assert.Equal(ListChangedType.ItemChanged, change);
Assert.Equal("Name", propname);
raised = false;
propname = null;
// Set nested properties
p.Address.City = new City();
Assert.True(raised);
Assert.Equal(ListChangedType.ItemChanged, change);
Assert.Equal("Address.City", propname);
raised = false;
propname = null;
// Set a nested property deeper than the PropertyBindingDepth
p.Address.City.Name = "Blahville";
Assert.False(raised);
// Remove the item
list.Remove(p);
Assert.True(raised);
Assert.Equal(ListChangedType.ItemDeleted, change);
raised = false;
// Changing a property on the removed item won't raise event
p.Name = "Fredrick";
Assert.False(raised);
// Add a few new items
list.Add(new Person() { Address = new Address() { City = new City() } });
list.Add(new Person());
list.Add(null); // Null value
raised = false;
// Change the PropertyBindingDepth
list.PropertyBindingDepth = 0;
Assert.True(raised);
Assert.Equal(ListChangedType.Reset, change);
raised = false;
// Change a property and make sure it still raises the event
list[0].Name = "Bill";
Assert.True(raised);
Assert.Equal(ListChangedType.ItemChanged, change);
Assert.Equal("Name", propname);
raised = false;
propname = null;
// Set a nested property deeper than the new PropertyBindingDepth
// but within the old depth shouldn't raise the event
list[0].Address.Street = "23 Foo Ave";
Assert.False(raised);
// Remove a null value
list.RemoveAt(2);
Assert.True(raised);
Assert.Equal(ListChangedType.ItemDeleted, change);
raised = false;
// Replace a value
p = list[1];
list[1] = new Person();
Assert.True(raised);
Assert.Equal(ListChangedType.ItemChanged, change);
raised = false;
// Old item doesn't raise events
p.Name = "Bob";
Assert.False(raised);
// New item does
list[1].Name = "Sherrie";
Assert.True(raised);
Assert.Equal(ListChangedType.ItemChanged, change);
Assert.Equal("Name", propname);
raised = false;
propname = null;
// Clear the list
list.Clear();
Assert.True(raised);
Assert.Equal(ListChangedType.Reset, change);
}
