Inherited forms don't show up in the designer

  • Thread starter Thread starter Sergio Florez M.
  • Start date Start date
S

Sergio Florez M.

Visual inheritance was working just fine until now. The designer shows me the parent form OK but the inherited ones give me this error:

System.Windows.Forms.Design.IEventHandlerService service already exists in the service container. Parameter name: serviceType
 
This is weird. Now the designer has changed its message and what I get is Object reference not sent to an instance of an object. I opened the task list to see in which file the error was and there's nothing in the file column of the list. If I double click the task it just places me on the first line of code in the file.

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El que persevera insiste
Sergio Florez M.
Medellín, Colombia


"Sergio Florez M." <[email protected]> escribió en el mensaje Visual inheritance was working just fine until now. The designer shows me the parent form OK but the inherited ones give me this error:

System.Windows.Forms.Design.IEventHandlerService service already exists in the service container. Parameter name: serviceType
 

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