473,573 Members | 2,734 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Disappearing Datasets in Visual Studio .Net 2003

When I open forms in my project which contain a typed-dataset dropped
onto the form (in the component tray), the dataset will often disappear
from the component tray and be removed from the designer-generated
code.

I am also having problems adding newly-created datasets to a form.
This results in:

"Could not add an instance of [dataset type] to the designer. To
resolve this problem, build the project, fix any errors, and add the
instance to the designer again."

Unfortunately, there are no errors, and the project builds fine. This
doesn't solve the issue.

I hooked up a separate instance of Visual Studio and attempted to see
if any exceptions were being thrown when this form was opened. Here's
what I got.

A first chance exception of type 'System.Missing MethodException '
occurred in mscorlib.dll
Additional information: Attempted to access a missing member.

A first chance exception of type
'System.Compone ntModel.Design. Serialization.C odeDomSerialize rException'
occurred in system.design.d ll
Additional information: The variable 'dsDetail' is either undeclared or
was never assigned.

Any ideas??

May 17 '06 #1
1 1467
As a follow-up to my own post, in case anyone else runs into this...

I solved this by removing the obj folder from within Visual Studio's
Solution Explorer ("show all files" first), then rebuilding and
re-opening the form.

It's fixed, at least for now.

Patrick wrote:
When I open forms in my project which contain a typed-dataset dropped
onto the form (in the component tray), the dataset will often disappear
from the component tray and be removed from the designer-generated
code.


Jun 6 '06 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

1
7259
by: angelag | last post by:
I am currently taking a college course in Visual Basic.Net and I am a beginner. I bought Visual Studio.Net 2003 to do my homework at home. I built my first project and e-mailed it to myself at school. When I tried to open it in the lab, I got a message saying I couldn't open it because it was created with a newer version. Evidently the lab...
6
6164
by: Martin Bless | last post by:
The good news: Along with Python-2.4 comes really good news to Windows users. Yes, you now CAN build extension modules yourself using the SAME C++ compiler and linker Python is built with itself. Everything you need is available at no costs (except download hassle and installation time). Once your system is set up properly its just a matter...
0
6103
by: Tom Lee | last post by:
Hi, I'm new to .NET 2003 compiler. When I tried to compile my program using DEBUG mode, I got the following errors in the C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7 \include\xdebug file as folows. I need help to resolve them ASAP: cl /c /nologo /MDd /W3 /Od /GR /GM /Zi /GX /D "_DEBUG" /D " WIN32" /D "_W INDOWS" /D "_WINDLL"...
4
5796
by: Steve | last post by:
Hi All, I've seen many postings regarding different situations where controls disappear but have never seen a decent solution. Here is the problem. I have a form onto which I am placing some standard controls from the toolbox (mainly radio buttons and labels.) The form itself derives from a base Form which derives from...
4
2663
by: Dennis | last post by:
I just lost some user controls for no reason using VB.Net 2003. I had added the controls thru the Design IDE and all was working ok but for some reason, they just disappeared. The form module ("Windows Designer code") showed them still there but all properties that I had set were gone. My solution was to re-add the controls in the designer...
0
1007
by: dave | last post by:
I have used Copy Project in Visual Studio.Net 2003 to make a copy of a project on which I want to base a very similar project. The project uses a back-end SQL Server database and has a lot of datasets. I have created a copy SQL Server database to link the new project to. The problem is that Visual Studio copies everything to the new project...
9
2892
by: GaryDean | last post by:
We have been noticing that questions on vs.2005/2.0 don't appear to get much in answers so I'm reposting some questions posted by some of the programmers here in our organization that never got answered... There are articles on the new TableAdapters where it says that a key new advantage is that a single TableAdapter, which can have multiple...
1
1894
by: PeterH | last post by:
I am developing a web service in VB.Net that returns data from a server. I have an .asmx page that uses a strongly typed dataset and I would like to return data in the form of strongly typed data table rows. However I always get an error message to do with the fact that the data set is not serializable. For example: "You must implement the...
7
2868
by: Ryan | last post by:
Quite awile ago I posted to this newsgroup in regards to using Datasets in my VB 2005 application. About how many Datasets should be used.. a limit to the number of tables that should be included in a dataset, etc. The concensus I was given was that one Dataset should be created per logical set of data, or approximately 1 Dataset per form...
0
7686
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language...
0
8009
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. ...
0
8198
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that...
1
7771
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For...
0
8060
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the...
0
6406
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then...
1
5580
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes...
0
5289
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert...
0
3730
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.