Find control in aspx page which has master page

Its easy to find the control in apsx page but we need to write
extra code when we have a master page for the aspx page.

Below is the code which finds control in aspx page which has master page.

Dim content As ContentPlaceHolder
content = Page.Master.FindControl("ContentPlaceHolder1")

Dim labelcontrol As Label
labelcontrol = content.FindControl("LabelId")
labelcontrol .Visible = False


using above code we can find the control.