我是 選 表單的..而且原來是可以編輯的...
因為這已經好幾次了??所以上來發問

出現這個錯誤
The designer could not be shown for this file because none of the classes within it can be designed. The designer inspected the following classes in the file: The class Form2 can be designed, but is not the first class in the file. Visual Studio requires that designers use the first class in the file. Move the class code so that it is the first class in the file and try loading the designer again.





Instances of this error (1)

1. Hide Call Stack

於 Microsoft.VisualStudio.WinForms.RemoteClient.Loader.RemoteCodeDomDesignerLoader.EnsureDocument(IDesignerSerializationManager manager)
於 Microsoft.VisualStudio.WinForms.RemoteClient.Loader.RemoteCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager manager)
於 Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager)
--- 先前擲回例外狀況之位置中的堆疊追蹤結尾 ---
於 Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager)
於 Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.DeferredLoadHandler.Microsoft.VisualStudio.TextManager.Interop.IVsTextBufferDataEvents.OnLoadCompleted(Int32 fReload)

改好了!!!原來是 public class 類別 放的位置不對