visual studio windows form call error

Question

when i try to add windows form to my project , it outputs errors
i make clr empty project .net framework

Instances of this error (1)

1. Hide Call Stack

at Microsoft.VisualStudio.Designer.Interfaces.IVSMDCodeDomProvider.get_CodeDomProvider()
at Microsoft.VisualStudio.Shell.Design.Serialization.CodeDom.CodeDomDocDataAdapter.get_Provider()
at Microsoft.VisualStudio.Shell.Design.Serialization.CodeDom.CodeDomDocDataAdapter.get_CompileUnit()
at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager)
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager)
at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.DeferredLoadHandler.Microsoft.VisualStudio.TextManager.Interop.IVsTextBufferDataEvents.OnLoadCompleted(Int32 fReload)

Answer 1

Hi shams-4721,
Please follow the steps below:
1.Close the error page and add the following code to the MyForm.cpp:(my project name is Project8)

using namespace System;  
using namespace System::Windows::Forms;  
[STAThreadAttribute]  
void Main(array<String^>^ args) {  
        Application::EnableVisualStyles();  
        Application::SetCompatibleTextRenderingDefault(false);  
        Project8(your project name)::MyForm form;  
        Application::Run(%form);  
}  

2.Right click on the your project name and choose Properties option.
3.Then


4.Reopen your project.
There is a more detailed step in this thread you can refer to.
Best Regards,
Daniel Zhang

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Answer 2

Try closing the tabs that are related to your new form, build the solution and re-open the form from Solution window.