Question

One or more errors encountered while loading the designer... in VS2005

Asked by: JimR123b

Hi,

I'm working on some code left to me by somebody else, and am having a strange error come up.

The project is in C# in Visual Studio 2005, and I'm getting the error when trying to view a UserControl in Visual Studio's designer.

The error is attached as code.

Strangely, the error comes up in the form of HTML, and it doesn't even show it as rendered HTML, just as raw HTML.

I'm running Vista on the development machine, and also have VS2003 installed, for other legacy projects.

Can anybody give me a clue as to what might be causing this error, and how I go about fixing it?

I've tried cleaning and rebuilding the solution, to no effect.

I cannot find any trace of anything called "ImageListDesigner" or "OriginalImageCollection" in the code, so have no idea where these names come from.

One or more errors encountered while loading the designer. The errors are listed below. Some errors can be fixed by rebuilding your project, while others may require code changes. 
 
Method 'System.Windows.Forms.Design.ImageListDesigner+OriginalImageCollection.Add' not found. 
Hide     
 
at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeStatement(IDesignerSerializationManager manager, CodeStatement statement)

                                  
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Asked On
2009-08-17 at 08:51:34ID24658593
Topics

Visual Studio

,

C# Programming Language

Participating Experts
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Answers

 

by: abelPosted on 2009-08-17 at 09:05:14ID: 25115784

The ImageListDesigner is an internal class and is located in the namespace System.Windows.Forms.Design. That namespace, in turn, is located in System.Design assembly, which is rooted at %SystemRoot%\Microsoft.net\Framework\v2.0.50727\System.Design.dll on most systems.

In other words, it is part of the .NET 2.0 distribution, but should be installed with the .NET 3.5 installation as well. You say you also have VS2k3 installed. If you installed that afterwards (after installing VS2k5) you may have to reinstall both, or at least VS2k5. There are numerous reports about these two colliding.

You can of course also check for the physical existence of the file and you can even try adding a reference to it.

--  Abel --

PS: the OriginalImageCollection is an internal type used for the Images property (private). The problem here is not that or the method "Add", the problem is not finding the whole class.

 

by: JimR123bPosted on 2009-08-18 at 02:20:41ID: 25121248

I've tried re-installing VS2005, to no noticable effect. I didn't uninstall and VS2005 and then install, as I didn't want to lose anything if possible. Instead, I ran the VS2005 installer and chose the repair option.

I've checked my project, and it has a reference to C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Design.dll, which seems to be ok (no warning icon next to the reference in solution explorer).

The System.Design.dll file also exists in the place that is referenced.

Strangely, I think I've had cases where the error (the html thing) comes up one time, and then another time the designer works correctly.

Any other ideas?

 

by: JimR123bPosted on 2009-08-18 at 02:27:42ID: 25121282

Also, might be worth noting...

The solution and all its projects seem to build without any errors, and the form which I am unable to view in the designer comes up fine at runtime.

It only seems to be the designer that experiences a problem.

 

by: JimR123bPosted on 2009-08-18 at 03:31:19ID: 25121636

As a house-keeping exercise, I've gone through all the warnings that are thrown up by the compiler (and there are a lot of them), and fixed the minor ones (like "variable declared but never used"), and now the error I get when viewing the same form in the designer has changed slightly (see attached code).

It appears that it's the same error as before, only repeated with no variation.

 One or more errors encountered while loading the designer. The errors are listed below. Some errors can be fixed by rebuilding your project, while others may require code changes. 
 
Method 'System.Windows.Forms.Design.ImageListDesigner+OriginalImageCollection.Add' not found. 
Hide     
 
at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeStatement(IDesignerSerializationManager manager, CodeStatement statement) 
 
Method 'System.Windows.Forms.Design.ImageListDesigner+OriginalImageCollection.Add' not found. 
Hide     
 
at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeStatement(IDesignerSerializationManager manager, CodeStatement statement) 
 
Method 'System.Windows.Forms.Design.ImageListDesigner+OriginalImageCollection.Add' not found. 
Hide     
 
at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeStatement(IDesignerSerializationManager manager, CodeStatement statement) 
 
Method 'System.Windows.Forms.Design.ImageListDesigner+OriginalImageCollection.Add' not found. 
Hide     
 
at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeStatement(IDesignerSerializationManager manager, CodeStatement statement) 
 
Method 'System.Windows.Forms.Design.ImageListDesigner+OriginalImageCollection.Add' not found. 
Hide     
 
at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeStatement(IDesignerSerializationManager manager, CodeStatement statement) 
 
Method 'System.Windows.Forms.Design.ImageListDesigner+OriginalImageCollection.Add' not found. 
Hide     
 
at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeStatement(IDesignerSerializationManager manager, CodeStatement statement) 
                                              
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by: JimR123bPosted on 2009-08-18 at 08:55:59ID: 25124574

Fixed it. Turns out it was caused by some code in the Designer.cs file, which was trying to add bitmaps of various sizes from a resource file.

 

by: JimR123bPosted on 2009-08-18 at 08:56:18ID: 25124577

...to an image list which was on the form.

 

by: abelPosted on 2009-08-18 at 15:02:13ID: 25128094

Glad you fixed it, I was just about showing you how to solve this the long way (removing / re-adding the image lists or, if that wouldn't help, debugging VS). What was the actual cause, the resource file missing, or the resource files or images corrupt?

Still not a really helpful message you get when this happens.

 

by: JimR123bPosted on 2009-08-19 at 09:54:25ID: 25134799

I'm not sure, tbh. But I noticed that in the designer.cs, if I removed the lines where images were being added from a resource file, that it worked ok.

I then tried to re-add the images via the designer, and discovered it doesn't let you, because you have to specify files, which I did, and everything still works now, 100%!

 

by: abelPosted on 2009-08-19 at 10:23:34ID: 25135103

> if I removed the lines where images were being added from a resource file, that it worked ok.

Years ago, in the times of VB6, I had a similar problem (devenv crashes caused by imagelist), which could only be resolved by adding them during load instead of during designtime. Not sure it's the same bug (most of these controls have been rewritten), but it looks like it... I'll keep this one in mind!

20120131-EE-VQP-002

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