ArcObjects Library Reference  

FrmExtentView

About the Extent view Sample

[C#]

FrmExtentView.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace ExtentView_CS
{
    public partial class FrmExtentView : Form
    {
        public FrmExtentView()
        {
            InitializeComponent();
        }
    }
}

[Visual Basic .NET]

FrmExtentView.vb

Public Class FrmExtentView

End Class