I have been looking at this for days. I have tried every option in the book and on the web, but have no luck.
There were no changes to the code where I am getting the error, but the designer file is out of sync. To me it seems like the NoteEditor.ascx.cs file can't read its control file NoteDetail.ascx.cs.
I am not sure why, I have tried deleting the designer file and recreating it. I tried closing all the project tabs and Visual Studio and reopened it, recreated the Designer files with no luck.
The error is that some controls don't have definitions even though they are all defined.
Is ChangeMode a control within the user control? Is it nested within another control?
When you look at designer.cs, does the control appear there?
If not then perhaps the designer isn't detecting your control. Try moving it to another location on the user control. Edit the ID, which may force the designer to recognize it. Once that happens you can move the control back to where it was.
Related
I am developing an application using Visual Studio 2019 and I am designing winforms.
Visual Studio commonly crashes when I am creating the forms by freezing, and recently my designed winform has somehow disappeared (even though I saved it). When i open it it shows as the default winform that is shown when a new one is created:
When I browse the solution explorer it seems that I can still see all the components I had added to the form:
Finally, when I try to restart and manually add the components back, I get an error message saying that the component can't be added due to duplication - which is probably because they are somehow still there (as shown in the solution explorer) but the data has been corrupted somehow:
If anybody has any idea of how to recover the data and the winform, I would very much appreciate it. If any additional information is required, please let me know. Thanks!
According to your description, first, the controls actually exist, but they are not
displayed in the design window.
You can try to check whether the. add statement of each control added to the window still
exists in the .Design.cs file.
If not, you can add it manually.
Second, solution explorer shows the missing components, but there is an error in adding
components. It means that only the declaration of this control in the .Design.cs file does
not assign a value to this control. You can delete the declaration of the component in the
.Design.cs file, and then add the component in the design interface.
Result:
I've inherited a project that has been modified in a way that is beyond me to undo. Every single control on the form is not modifiable in the designer except through the Properties window and each control has an icon in the area below (see image) in the section usually reserved for non-visible items (e.g. DataSource). How do I undo this and return the designer to a usable version without wiping it all out and starting over?
Could the controls be locked? I have run into legacy code in which the programmers have locked every single control, meaning you cannot move or resize them in the designer. If so, select them all and change the Locked property to false (you should also see a padlock in the designer when you select them, if they are locked.
If not, well maybe you can create a new dialog/form and copy the controls unto it and see if that clears things up. Another trick could be to add a second instance of the user control(s) to see if the newly added control works as expected. If so, go through the code and point all events/logic to the new control (tedious yes, but may work).
Also, you can never edit individual sub-controls of a user control in the designer for the form/control where you instantiated the user control. You must go to the designer of the user control to edit individual (sub)controls of a user control.
If the Infragistics controls are shown in the Component Tray, than there might be version differences. What you could try is to open the licenses.licx file and remove the content from there. Do you have an Infragistics controls installed on your machine? Are there any difference after setting the "Specific Version" property of the Infragistics assemblies to "false"?
Is this happening only in your existing project or the same behavior is reproducible in a new project as well?
You have to load the dll that contains the controls you can't modify in the designer.
the steps are:
right click in the ToolBox in visual studio designer (on General for example).
select Choose Items...
after a while vs load items press browse and select the dll
interested than the componet should appear in the grid. Do this for
all the dll that contains the controls you are interested.
-Make sure you have checked the component (use filter text box if you
have a lot of component loaded).
press ok.
Now you should be able to move controls in designer.
I have also seen behavior this when a user control or form is incorrectly flagged as a 'Component'.
Some manual hacking of the .csproj file may be the answer then. Open the project file in a text editor, and find the references to your control. If you find a subtype defined as:
<Compile Include="MyControl.cs">
<SubType>Component</SubType>
</Compile>
The forms designer will interpret it as such. You can change the 'SubType' to 'UserControl' to fix it.
When I try to open the form in design view I got this error screen:
Then when I click ok I got another error message:
i don´t know how to fix this, help!
Generally this issue overcome when required resource for the form is missing.
As for ex. first you have set a image to a button or any other control and then by mistake if you removed image directly from folder without setting image or background property none of that control at that time in code image is referenced that control which is not exist at that time designer error comes.
This is one case for designer error may be in your case its different.
I have found what is the problem.
When the Visual Studio has, in this case, a form with a lot of controls added, in the moment that Visual Studio try to do the rendering in design time, it simply can´t do the rendering and this error is show.
The solution is to add the controls in runtime so the Visual Studio doesn´t have to do the rendering of to many controls.
I am finding it quite awkward. I have registered the user controls and they are actually being parsed as I can view the controls I have placed on them. Problem is that I cannot access them in code behing. Even when I place them, their tags are not represented in the intellisence drop down. What could be causing this?
I am placing them on a page residing in a master page setting. The controls are declared on the child page.
The TagPrefix is not shown at all.
Kenyana check your designer file to make sure there is an entry for your control, if not open the page in designer view (not html) and it should update the designer file.
What VS version are you using? In VS 2008 it is a known issue, that intellisense might not work for usercontrols.
Check these Steps:
1) Make sure that the UserControl is without errors. Sometimes having bad markup prevents intellisense.
2) Rebuild your project. This might help
Nevertheless: The ability not to have intellisense does not prevent you from adding the control manually
<prefix:name ID="foo" runat="server"/>
Visual Studio 2010 much improves this situation. As of VS 2010 you will get access to intellisense for your usercontrols instantly (at least most of the time)
I have a form which has several buttons, labels and other stuff on it, but the designer appears to remember old elements of that form that have previously be deleted.
Is there anyway to 'refresh' the form.Designer.cs code to inform it what elements are currently on the form and what elements are not.
Cheers for the help in advance ;)
If they are still in the designer file after a restart of VS and a re-open of the designer then they haven't been deleted yet. I've seen several cases where people think that variables are deleted but what's happen is they've been moved off of the visible area of a form. So they still exist but they're not doing anything interesting.
What you can do is close the designer, carefully delete all of the variables you want from the designer.cs file, recompile and re-open the designer. Before doing this I would backup the file though as it is possible to mess up your control by doing this.