Error : Can not Convert type LeadTools.Annotation.Designers.AnnDesigner to Leadtools.Annotations.Ann

Hello Sir,
Error : Can not Convert type LeadTools.Annotation.Designers.AnnDesigner to Leadtools.Annotations.AnnEditDesigner .

this code is run in v18 trail but not work in v19 trail

void cell_DesignerCreated(object sender, MedicalViewerDesignerCreatedEventArgs e)
{
if (e.Type == MedicalViewerDesignerType.DrawDesigner)
{
Leadtools.Annotations.AnnDrawDesigner designer = (Leadtools.Annotations.AnnDrawDesigner)e.Designer;
designer.Draw += new EventHandler(designer_Draw);
}
else if (e.Type == MedicalViewerDesignerType.EditDesigner)
{
Leadtools.Annotations.AnnEditDesigner designer = (Leadtools.Annotations.AnnEditDesigner)e.Designer;
designer.Edit += new EventHandler(designer_Edit);
}
}
}

The new LEADTOOLS v19 Medical Viewer control no longer uses the old Leadtools.Annotations.dll, because it is deprecated.
It is now uses Leadtools.Annotations.Core instead with the other new annotations DLLs (Leadtools.Annotations.Core.dll, Leadtools.Annotations.Automation.dll, Leadtools.Annotations.Designers.dll, Leadtools.Annotations.WinForms.dll, etc.).

About the casting problem in your code, you need to change the code as follows:
+----------------------+
void cell_DesignerCreated(object sender, MedicalViewerDesignerCreatedEventArgs e)
{
if (e.Type == MedicalViewerDesignerType.DrawDesigner)
{
Leadtools.Annotations.Designers.AnnDrawDesigner designer = (Leadtools.Annotations.Designers.AnnDrawDesigner)e.Designer;
designer.Draw += designer_Draw;
}
else if (e.Type == MedicalViewerDesignerType.EditDesigner)
{
Leadtools.Annotations.Designers.AnnEditDesigner designer = (Leadtools.Annotations.Designers.AnnEditDesigner)e.Designer;
designer.Edit += designer_Edit;
}
}
+----------------------+

Thanks,
Maen Badwan
LEADTOOLS Technical Support

Thanks a lot