 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
.NET Forum / Visual Studio.NET / IDE / May 2008Inherit a VisualStudio 2008 generics form
Hi I have a form with a generic type, like this one: public partial class BaseForm<T> : Form { /* ... */ } Another form inherit my base form: public partial class CustomForm : BaseForm<int> { /* ... */ } Now the designer show me this exception: The designer could not be shown for this file because none of the classes within it can be designed. The designer inspected the following classes in the file: CustomForm --- The base class 'BaseForm' could not be loaded. Ensure the assembly has been referenced and that all projects have been built. How can i solve this problem in VisualStudio 2008? Thank in advance Hello Giorgio, According to your description, you got an error said generic form ("BaseForm") could not be loaded in designer mode. Correct? If I misunderstood anything here, please don't hesitate to correct me. I have reproduced the issue. As far as I know, VS IDE draws Form Designer by reflecting assemble, and creates the instance by its default constructor. But, we couldn't create constructor for Generic Class. This results the issue when VS IDE try to create a instance of Generic form. The issue only occurs on Form Designer Mode. If you run the project, I believe the problematic form could work fine in runtime. This seems a limitation with VS IDE Form Designer. I will perform further research to check if there is any way to resolve the issue, and update you once I get any information. Thanks for your understanding. If you have any more concern, please feel free to let us know. We are glad to assist you. Have a great day, Best regards, Wen Yuan Delighting our customers is our #1 priority. We welcome your comments and suggestions about how we can improve the support we provide to you. Please feel free to let my manager know what you think of the level of service provided. You can send feedback directly to my manager at: msdnmg@microsoft.com. ================================================== Get notification to my posts through email? Please refer to http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif ications. Note: The MSDN Managed Newsgroup support offering is for non-urgent issues where an initial response from the community or a Microsoft Support Engineer within 1 business day is acceptable. Please note that each follow up response may take approximately 2 business days as the support professional working with you may need further investigation to reach the most efficient resolution. The offering is not appropriate for situations that require urgent, real-time or phone-based interactions or complex project analysis and dump analysis issues. Issues of this nature are best handled working with a dedicated Microsoft Support Engineer by contacting Microsoft Customer Support Services (CSS) at http://msdn.microsoft.com/subscriptions/support/default.aspx. ================================================== This posting is provided "AS IS" with no warranties, and confers no rights. Hi Wen Thank for your reply. You have perfectly understood my problem. I'm waiting for a possible solution Regards Giorgio > Hello Giorgio, > [quoted text clipped - 42 lines] > This posting is provided "AS IS" with no warranties, and confers no > rights. Hello Giorgio, Thanks for your waiting. I'm sorry, but this seems a limitation in VS IDE. The form which inherits a generics form could work fine on Runtime, however, failed in Designer Mode. I also tried it on VS 2005. The issue still persists. It seems we lost the support in VS IDE Form Designer. Because we cannot find any workaround so far, I have logged it in our internal DB for product team to investigate. If you want to communicate with our product team developer on this issue, you can also submit this issue on our Connect Feedback Portal. Our developer will evaluate them seriously and communicate with you directly on the issue http://connect.microsoft.com/VisualStudio/ Thanks for your posting. This will benefit our product quality improvement very much. But I'm afraid this issue may not be fixed very soon. For urgent issues, I suggest you can contact Microsoft CSS directly. If the problem is confirmed to be a product bug, the case charge will be free. You can check http://support.microsoft.com for regional support phone numbers. Hope this helps. Please feel free to let us know if you have any more concern. We are glad to assist you. Thanks again for your understanding. Best regards, Wen Yuan Microsoft Online Community Support Delighting our customers is our #1 priority. We welcome your comments and suggestions about how we can improve the support we provide to you. Please feel free to let my manager know what you think of the level of service provided. You can send feedback directly to my manager at: msdnmg@microsoft.com. ================================================== This posting is provided "AS IS" with no warranties, and confers no rights. Hello Giorgio, This is Wen Yuan, again. The issue seems like a VS IDE limitation. So far, my suggestion is changing the code to inherit Form class when designing. We really apologize for any inconvenience this may accused. I just want to check if there is anything we can help with on this issue. If you have any more concern, please feel free to let us know. We are glad to assist you. Thanks for your understanding. Best regards, Wen Yuan Microsoft Online Community Support Delighting our customers is our #1 priority. We welcome your comments and suggestions about how we can improve the support we provide to you. Please feel free to let my manager know what you think of the level of service provided. You can send feedback directly to my manager at: msdnmg@microsoft.com. ================================================== This posting is provided "AS IS" with no warranties, and confers no rights. Thank for your reply I have found a little workaround: http://www.madprops.org/cs/blogs/mabster/archive/2006/09/19/Designing-Generic-Fo rms.aspx Regards Giorgio > Hello Giorgio, > [quoted text clipped - 18 lines] > This posting is provided "AS IS" with no warranties, and confers no > rights. Hello Giorgio, Thanks for your reply and great solution. This is really a smart workaround to the issue. Defining a class between GenericForm and new IntForm could make VS IDE to recognize IntForm as a standard from. Thereby, we get Form Designer support again. We really appreciate for your feedback. Other community member in newsgroup may learn and benefit from your feedback. I will also log this information in our Internal DB. Sorry for any inconvenience this limitation may cause. If there is anything you feel we can help with, please don't hesitate to let us know. It's my pleasure to assist you. Thanks again for your understanding. Best regards, Wen Yuan Microsoft Online Community Support Delighting our customers is our #1 priority. We welcome your comments and suggestions about how we can improve the support we provide to you. Please feel free to let my manager know what you think of the level of service provided. You can send feedback directly to my manager at: msdnmg@microsoft.com. ================================================== This posting is provided "AS IS" with no warranties, and confers no rights.
Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
|
Reply to this Message
|
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.