You can select the visual elements to display or to hide in the FileExplorer. See Visual Elements for further information on the elements of the FileExplorer.
to open the FileExplorer Tasks Menu.Set the VisibleControls property in the <cc1:C1FileExplorer> tag to manage the control visibility.
<cc1:C1FileExplorer ID="C1FileExplorer1" runat="server" ViewPaths="Example" VisibleControls="Toolbar, AddressBox, TreeView, Grid">