gistfile1.txt

-- Sending Navigation Parameters
var parameters = new NavigationParameters();
parameters.Add("SomeParamater", "SomeParameterValue");
regionManager.RequestNavigate("Navigation", "viewName", parameters);

-- Receiving Navigation Parameters
public class SampleViewModel: BindableBase, INavigationAware
{
  ...
   
  public void OnNavigatedTo(NavigationContext navigationContext)
  {
    var value = navigationContext.NavigationParameters["SomeParameter"];
    ...
  }
  ...

}