Cannot open designer window

ray dona

Hi,

I do not what has happened but every time I try to open the designer window (UI) for a form I get the following error message:

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

The designer could not be shown for this file because none of the classes within it can be designed

at System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.EnsureDocument(IDesignerSerializationManager manager) at

System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager manager) at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager) at System.ComponentModel.Design.Serialization.BasicDesignerLoader.BeginLoad(IDesignerLoaderHost host)

I do not know what the error means but it is not allowing me to view the UI so I am unable to work on it. I'd be grateful for all suggestions as to how I might fix the problem.

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

ray dona17y ago
Hi,

Thanks for your reply. Yes I have rebuilt it several times but with no success. The only error that appears is shown below:

A circular control reference has been made. A control cannot be owned by or parented to itself.

at System.Windows.Forms.Control.CheckParentingCycle(Control bottom, Control toFind)
at System.Windows.Forms.Control.ControlCollection.Add(Control value)
at System.Windows.Forms.Form.ControlCollection.Add(Control value)
at System.Windows.Forms.Design.ControlDesigner.DesignerControlCollection.Add(Control c)

Please help me as it as it’s causing my designer window not to open and I am finding it very frustrating.
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Jan Montano17y ago
Have you tried rebuilding the project? Is the building successful? If not, please post the exact error here.
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