Modelspace Zoom Extents

[sigster]

Hi

How can I Zoom Extents in Modelspace after I import data

[sungaoyong]

my code worked successed with

` CadDocument doc = new CadDocument();

VPort vport = doc.VPorts["*Active"];
if (vport != null)
{
vport.Center = new CSMath.XY(40404219.63209335, 3615454.9612060254);
vport.ViewHeight = 1202.0730586005643;
vport.ViewMode = ViewModeType.FrontClippingZ;
vport.UseDefaultLighting = true;
}`

but not success with CadDocument from a file