Hi Gerry,
Where did you get the error message? The error message means that you are
trying to use an Object which is not set to an instance.
Since this control is custom ASP.NET server control, please ensure its
Namespace and Class Name is correct in register syntax in web.config.
Besides, you can send me an example which can reproduce the issue. My email
address is (e-mail address removed)
I look forward to hearing from you.
--
Best Regards,
Thomas Sun
Microsoft Online Partner Support
--------------------
| X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
|
| thanks thomas
|
| I did this same web.config mod and I added a control adapter for the
| ObjectDataSource that will throw an exception at runtime if the control
is
| not an isntance of my custom version.
|
| Gerry
|
|
|
|
|
| | > Hi Gerry,
| >
| > Thanks for your response. I am glad that you worked it out.
| >
| > To globally use your custom ObjectDataSource control, we can register
it
| > in
| > web.config's Controls section and then use this custom ObjectDataSoure
in
| > page. For example:
| > ======================
| > <pages>
| > <controls>
| > <add assembly="CustomObjectDataSource"
| > namespace="CustomObjectDataSource" tagPrefix="cc1"/>
| > </controls>
| > </pages>
| > ======================
| >
| > You can also add this custom ObjectDataSource into Toolbox so that you
can
| > drag and drop it into page like other server control.
| >
| > For more information, see
| >
http://weblogs.asp.net/scottgu/archive/2006/11/26/tip-trick-how-to-register-
| > user-controls-and-custom-controls-in-web-config.aspx
| >
http://msdn.microsoft.com/en-us/library/1e9b4c9f.aspx
| >
| >
| > I look forward to receiving your test results.
| >
| >
| >
| > Best Regards,
| > Thomas Sun
| >
| > Microsoft Online Partner Support
| > --------------------|
| > | well after my 1st major foray into reflection I have this working as
| > | desired.
| > | In the end I derived classes from ObjectDataSource and
| > ObjectDataSourceView,
| > | there was minor change to the ObjectDataSource constructor and a
| > slightly
| > | more involved change to the ObjectDataSourceView.ExecuteUpdate()
method.
| > | Luckily these 2 classes have minimal security settings to allow
| > reflected
| > | access to private members.
| > |
| > | Now the question is - can I globally specifiy that any references to
| > | System.Web.UI.WebControls.ObjectDataSource should instead use
| > | Some.Other.ObjectDataSource ?
| > | I seem to recall seeing this type of thing being done in the
web.config
| > in
| > | the past for previews & betas - I can't find an example but I have the
| > | feeling this was at the assembly level and I only want to replace a
| > single
| > | control.
| > |
| > | Gerry
| > |
| > |
| > |
| > |
| > | | > | > Thanks Thomas,
| > | >
| > | > This seems to work fine under the specific ODS configuration given
in
| > the
| > | > example.
| > | > However, in cases where multiple forms each update a different
subset
| > of
| > | > properties on the same data object, we are forced to setup an update
| > | > method specific to each form. I would prefer to configure the ODS
on
| > each
| > | > form with the DataObjectTypeName to all invoke the same update
method
| > | > which takes the updated data object as its only argument .
| > | > In this scenario, you can't modifiy the InputParameters in the
| > Updating
| > | > event - it generates the runtime error :
System.NotSupportedException:
| > The
| > | > OrderedDictionary is readonly and cannot be modified.
| > | > But this is moot anyway because the new object has already been
| > created
| > | > and populated before this point.
| > | >
| > | > I am thinking that this will involve a custom ObjectDataSource. I
may
| > | > either try to track down the source for the ODS or use relector to
see
| > if
| > | > deriving from the standard ODS is possible.
| > | >
| > | > Gerry
| > | >
| > | >
| > | >
| > | >
| > | > | > | >> Hi Gerry,
| > | >>
| > | >> From your description, I understand that you want to get the copy
of
| > | >> original data and only change the value needed to be changed while
| > | >> updating
| > | >> with ObjactDataSource control, right? If I have misunderstood you,
| > please
| > | >> feel free to let me know.
| > | >>
| > | >> To get original data, you can save it in ViewState in
| > ObjectDataSource's
| > | >> Selected event and retrieve it in Updating event and then modify
it.
| > | >>
| > | >> For more information, see
| > | >>
| > | >>
| >
http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.objectdata
| > | >> source.updating.aspx
| > | >>
| >
http://www.asp.net/(S(ywiyuluxr3qb2dfva1z5lgeg))/learn/data-access/tutorial-
| > | >> 06-cs.aspx
| > | >>
| > | >>
| > | >> I look forward to receiving your test results.
| > | >>
| > | >>
| > | >> --
| > | >> Best Regards,
| > | >> Thomas Sun
| > | >>
| > | >> Microsoft Online Partner Support
| > | >>
| > | >> ==================================================
| > | >> Get notification to my posts through email? Please refer to
| > | >>
| >
http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif
| > | >> ications.
| > | >>
| > | >> With newsgroups, MSDN subscribers enjoy unlimited, free support as
| > | >> opposed
| > | >> to the limited number of phone-based technical support incidents.
| > Complex
| > | >> issues or server-down situations are not recommended for the
| > newsgroups.
| > | >> Issues of this nature are best handled working with a Microsoft
| > Support
| > | >> Engineer using one of your phone-based incidents.
| > | >> ==================================================
| > | >>
| > | >> This posting is provided "AS IS" with no warranties, and confers no
| > | >> rights.
| > | >>
| > | >> --------------------
| > | >> | From: "germ" <
[email protected]>
| > | >> | Subject: objectdatasource
| > | >> | Date: Sun, 31 Jan 2010 09:31:00 -0500
| > | >> | Lines: 15
| > | >> | X-Priority: 3
| > | >> | X-MSMail-Priority: Normal
| > | >> | X-Newsreader: Microsoft Outlook Express 6.00.2900.5843
| > | >> | X-RFC2646: Format=Flowed; Original
| > | >> | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579
| > | >> | Message-ID: <
[email protected]>
| > | >> | Newsgroups: microsoft.public.dotnet.framework.aspnet
| > | >> | NNTP-Posting-Host: 206-248-138-28.dsl.teksavvy.com 206.248.138.28
| > | >> | Path:
| > TK2MSFTNGHUB02.phx.gbl!TK2MSFTNGP01.phx.gbl!TK2MSFTNGP02.phx.gbl
| > | >> | Xref: TK2MSFTNGHUB02.phx.gbl
| > | >> microsoft.public.dotnet.framework.aspnet:96142
| > | >> | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| > | >> |
| > | >> | I really like the objectdata source with one notable exception.
| > | >> | When doing an update, a new() object is created and the bound
| > values
| > on
| > | >> the
| > | >> | form used to set its properties with all other properties set to
| > | >> default
| > | >> | values.
| > | >> | I would like to be able to override the object creation step and
| > | >> provide
| > | >> a
| > | >> | copy of the original object to be updated such that all values
are
| > set
| > | >> not
| > | >> | just those that were bound on the form.
| > | >> |
| > | >> | As far as I can tell there is no way to do this - am I missing
| > | >> something
| > | >> and
| > | >> | this is possible ?
| > | >> |
| > | >> | Gerry
| > | >> |
| > | >> |
| > | >> |
| > | >> |
| > | >>
| > | >>
| > | >
| > | >
| > |
| > |
| > |
| >
|
|
|
