// The external command invokes this on the end-user's request
public void ShowForm()
{
// If we do not have a dialog yet, create and show it
if (m_MyForm == null)
{
// A new handler to handle request posting by the dialog
ClasherHandler handler = new ClasherHandler();
// External Event for the dialog to use (to post requests)
ExternalEvent exEvent = ExternalEvent.Create(handler);
// External execution handler to provide the needed context by revit to perform modifications on active document
CleanViewHandler cleanViewHandler = new CleanViewHandler();
// External event used for clean elements on the active view
ExternalEvent externalCleanEvent = ExternalEvent.Create(cleanViewHandler);
// We give the objects to the new dialog;
// The dialog becomes the owner responsible for disposing them, eventually.
m_MyForm = new MainUserControl(exEvent, handler, externalCleanEvent);
m_MyForm.Closed += MyFormClosed;
m_MyForm.Show();
}
}
private void MyFormClosed(object sender, EventArgs e)
{
m_MyForm = null;
}