Another editor has made changes to '<document name>'
Close and reopen this designer for those changes to take effect.
Normally, Visual Studio automatically reloads a designer after changes are made. However, other designers, such as third-party component designers, can choose not to do such reload behavior. In this case, Visual Studio prompts you to close and reopen the designer manually.
To correct this error
- Close and reopen this designer manually for the changes made to take effect.