you might find some of this usefull.
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q318581
There is also an article on how to put a droplist into a datagrid, but the link
escapes me at the moment. Both are good articles on how to "subclass" a control
in the datagrid.
Dale
> I've done
Actually, after a little investigating, this seems perhaps a little more
complicated than necessary. What does this approach over, say, the
DataGrid.CurrentCellChanged Event buy you?
Jacob A. Grass
Software Engineer
Daleen
__
this message contains confidential information inte
I finally had to think out of the box and discovered that the license
message was just wrong and quite misleading. I was attempting to load a
non-existent control!
Sorry for the bother. My confidence with COM Interop (regarding activeX
that is) increases a bit! My embarrassment increases as well!!
Hugh,
You could retool your objects to have "micro-object" components of under 85K.
For instance, if you have a 1MB image, you could break it down into
85K chunks or tiles.
Arun
Hugh Williams writes:
> When you allocate large objects they go on the Large Object Heap.
> (Aside: the predominant li
I've done this exact trick before -- my problem here is that the control I
want to subclass (data grid text box) is created by the data grid text box
column -- ergo how do I "trick" the data grid text box column to create MY
subclass?
Alan
Simon,
Mmm, you've said it youself---more or less. Rather than just marshal, your
wrapper should take care of loading and freeing the library too. So, instead
of activating your COM object through the COM API, you could make a
LoadLibrary call and attach to an entry point yourself. When you want t
> I'm thinking no problem, I'll just add a message filter in
> (WndProc) and
> fire the validation myself -- but I cannot figure out how to code this
> given that the data grid text box is initially created in the
> constructor
> for the data grid text box column -- so how to attach to it's
> me
My users don't like the fact that on the data grid, tabbing through a cell
fails to fire any validation. This is because the data grid text box
column that encapsulates a data grid text box (inherits from standard text
box) doesn't expose enter/leave type events and the currency/binding
manager do
When you allocate large objects they go on the Large Object Heap.
(Aside: the predominant literature says a "large object" is defined as
over 85,000 bytes; some sources say 20,000 but my empirical testing says
85k. Could this be a server/workstation difference?)
This heap gets collected much less
This was fixed in a Service Pack. I am not sure which one - 1st or 2nd, I
haven't installed the first one. Before that it took about 20 seconds to
start .net written NT service on my NT4 box. It is pretty normal now.
Mikhail
-Original Message-
From: Wallace B. McClure [mailto:[EMAIL PROTE
Having sorted out my performance issue with interop (cheers Richard it was
the Apartment model - I just wasn't doing it right!) I now have another
issue, that I think may be unsolvable, but I'm hoping that one of you knows
better!
What I want to do is to be able to replace the COM components my ap
It's monday and now I can see the answer! :-)
The RenderChildren should be aware of RenderMethod. So, for a Form control
the RenderChildren should be something like:
output.WriteBeginTag(etc);
output.WriteAttrs(etc);
invoke delegate;
output.WriteEndTag(etc);
Pretty simple.
hammett
MCAD
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