Hello,
On http://msdn2.microsoft.com/en-us/library/ms184414.aspx is an example of
the implementation of INotifyProperty Changed Interface. I work with the C#
example.
I have tried this sample, and it works, but I have a problem with it.
When I push the button, the first CompanyName is changed in Tailspin Toys
directly.
But when I changed the code in customerList[1] (instead of 0) then I have to
click on the cell before I see the changes.
When I copy the line of code, so I have customerList[0] and customerlist[1]
and I click, only the first CompanyName changed and not the second unless I
click on the cell.
In this sample, the datasource is based on List<DemoCustom ercustomerList.
I have changed List in BindingList and then it seems to work.
So my question is: Does it have to work with List<Tor is the example bad?
And is it ok to use BindingList instead of List?
Thanks, Gerrit
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by: Dave |
last post by:
Hello all,
After perusing the Standard, I believe it is true to say that once you
insert an element into a std::list<>, its location in memory never changes.
This makes a std::list<> ideal for storing vertices of an arbitrary n-ary
tree where a vertex contain pointers to its parent / children. These parent
/ child vertices need to stay put if we've got pointers to them somewhere!
Am I correct in my assertion?
|
by: matty.hall |
last post by:
I have two classes: a base class (BaseClass) and a class deriving from
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reasons needs to be of that type, and not a List<BaseClass>. However, I
need to cast that list to a List<BaseClass> and it is not working. The
code is below. I get the following exception:
"Unable to cast object of type 'System.Collections.Generic.List`1' to
type 'System.Collections.Generic.List`1'."
...
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Hello, there
I have a problem with regards to System.Collections.Generic.List<T>
I need to pass a class with implements an interface - TestClass :
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I put this class in a List<TestClass> = new List<TestClass>();
then I pass this List<TestClass> to a function which takes an argument
List<IPerson> person
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by: Paul |
last post by:
Hi,
I feel I'm going around circles on this one and would appreciate some other
points of view.
From a design / encapsulation point of view, what's the best practise for
returning a private List<as a property.
Consider the example below, the class "ListTest" contains a private "List<>"
called "strings" - it also provides a public method to add to that list,
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Obviously you can't just use a simple for loop, since you may skip
over elements.
You could modify the loop counter each time an element is deleted.
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by: Zytan |
last post by:
This returns the following error:
"Cannot modify the return value of
'System.Collections.Generic.List<MyStruct>.this' because it is
not a variable"
and I have no idea why! Do lists return copies of their elements?
Why can't I change the element itself?
class Program
{
private struct MyStruct
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This seems inconsistent and more than a little bizarre.
Array.Clear sets all elements of the array to their default values (0,
null, whatever), whereas List<>.Clear removes all items from the list.
That part makes a reasonable amount of sense, as you can't actually take
items away from an Array. However, there doesn't seem to be a way to
perform the same operation in one fell swoop on a List<>.
For example:
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