Programmatically Taking a Full Web Page Screenshot

ScreenShot.cs

using System;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Windows.Forms;

public class ScreenShot
{
    [ComImport]
    [InterfaceType( ComInterfaceType.InterfaceIsIUnknown )]
    [Guid( "0000010d-0000-0000-C000-000000000046" )]
    private interface IViewObject
    {
        [PreserveSig]
        int Draw( [In] [MarshalAs( UnmanagedType.U4 )] int dwDrawAspect, int lindex, IntPtr pvAspect,
                  [In] /*tagDVTARGETDEVICE*/ IntPtr ptd, IntPtr hdcTargetDev, IntPtr hdcDraw,
                  [In] /*COMRECT*/ Rectangle lprcBounds, [In] /*COMRECT*/ IntPtr lprcWBounds, IntPtr pfnContinue,
                  [In] int dwContinue );

        [PreserveSig]
        int GetColorSet( [In] [MarshalAs( UnmanagedType.U4 )] int dwDrawAspect, int lindex, IntPtr pvAspect,
                         [In] /*tagDVTARGETDEVICE*/ IntPtr ptd, IntPtr hicTargetDev, [Out] /*tagLOGPALETTE*/ IntPtr ppColorSet );

        [PreserveSig]
        int Freeze( [In] [MarshalAs( UnmanagedType.U4 )] int dwDrawAspect, int lindex, IntPtr pvAspect, [Out] IntPtr pdwFreeze );

        [PreserveSig]
        int Unfreeze( [In] [MarshalAs( UnmanagedType.U4 )] int dwFreeze );

        void SetAdvise( [In] [MarshalAs( UnmanagedType.U4 )] int aspects, [In] [MarshalAs( UnmanagedType.U4 )] int advf,
                        [In] [MarshalAs( UnmanagedType.Interface )] /*IAdviseSink*/ IntPtr pAdvSink );

        void GetAdvise( [In] [Out] [MarshalAs( UnmanagedType.LPArray )] int[] paspects,
                        [In] [Out] [MarshalAs( UnmanagedType.LPArray )] int[] advf,
                        [In] [Out] [MarshalAs( UnmanagedType.LPArray )] /*IAdviseSink[]*/ IntPtr[] pAdvSink );
    }

    public static Bitmap Create( string url )
    {
        using( var webBrowser = new WebBrowser() )
        {
            webBrowser.ScrollBarsEnabled = false;
            webBrowser.ScriptErrorsSuppressed = true;
            webBrowser.Navigate( url );

            while( webBrowser.ReadyState != WebBrowserReadyState.Complete )
            {
                Application.DoEvents();
            }

            webBrowser.Width = webBrowser.Document.Body.ScrollRectangle.Width;
            webBrowser.Height = webBrowser.Document.Body.ScrollRectangle.Height;

            var bitmap = new Bitmap( webBrowser.Width, webBrowser.Height );
            var graphics = Graphics.FromImage( bitmap );
            var hdc = graphics.GetHdc();

            var rect = new Rectangle( 0, 0, webBrowser.Width, webBrowser.Height );

            var viewObject = (IViewObject)webBrowser.Document.DomDocument;
            viewObject.Draw( 1, -1, (IntPtr)0, (IntPtr)0, (IntPtr)0, hdc, rect, (IntPtr)0, (IntPtr)0, 0 );

            graphics.ReleaseHdc( hdc );

            return bitmap;
        }
    }
}

Hello Joshclose,

its is really useful in our requirement, but i am getting only part of the web page (say, 35-40% from left top).
can you suggest me, how can i get the complete page. thanks in advance. sridhar.sethu@gmail.com