Thread: Unhandled exception on Stream variable for HttpWebRequest/HttpWebResponse

I'm getting an unhandled exception at the statement in red in the following code. Being somewhat new to C#, I'm not sure on how to resolve it. The debug output is as follows:

Code:

$exception	{"Parameter is not valid."}	System.Exception {System.ArgumentException}
this	{CCTVStream.VideoStream, Text: CCTV Video Streaming}	CCTVStream.VideoStream
sURL	"http://192.168.1.102/cgi-bin/nph-zms?mode=jpeg&monitor=1&user=guest&pass=guest"	string
buffer	{Dimensions:[100000]}	byte[]
str	{System.Net.ConnectStream}	System.IO.Stream {System.Net.ConnectStream}
[System.Net.ConnectStream]	{System.Net.ConnectStream}	System.Net.ConnectStream
base	{System.Net.ConnectStream}	System.IO.Stream {System.Net.ConnectStream}
CanRead	true	bool
CanSeek	false	bool
CanTimeout	true	bool
CanWrite	false	bool
Length	'((System.Net.ConnectStream)(str)).Length' threw an exception of type 'System.NotSupportedException'	long {System.NotSupportedException}
Position	'((System.Net.ConnectStream)(str)).Position' threw an exception of type 'System.NotSupportedException'	long {System.NotSupportedException}
ReadTimeout	300000	int
WriteTimeout	300000	int
Static members		
Non-Public members		
base	{System.Net.ConnectStream}	System.MarshalByRefObject {System.Net.ConnectStream}
CanRead	true	bool
CanSeek	false	bool
CanTimeout	true	bool
CanWrite	false	bool
Length	'str.Length' threw an exception of type 'System.NotSupportedException'	long {System.NotSupportedException}
Position	'str.Position' threw an exception of type 'System.NotSupportedException'	long {System.NotSupportedException}
ReadTimeout	300000	int
WriteTimeout	300000	int
Static members		
Non-Public members

Code:

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;
using System.IO;
namespace CCTVStream
{
    /// <summary>
    /// Summary description for PictureBoxDemo.
    /// </summary>
    public class VideoStream : System.Windows.Forms.Form
    {
        private System.Windows.Forms.PictureBox pictureBox1;
        private System.Windows.Forms.Button button1;
   
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;
        
        private Image GetImage(string sURL)
        {
            byte[] buffer = new byte[100000];
            Stream str = null;      
            try
            {
                //Create a web request to the url containing the image
                HttpWebRequest wReq = (HttpWebRequest)WebRequest.Create(sURL);

                //optional: use only if you're using a proxy to connect to the internet         
                //wReq.Proxy = SetWebProxy();

                //gets the response from the web request 
                HttpWebResponse wRes = (HttpWebResponse)(wReq).GetResponse();

                //return the image stream from the URL specified earlier

                str = wRes.GetResponseStream();
            }
            catch (Exception Ex)
            {
                MessageBox.Show(Ex.Message);
            }

            if (str != null)
            {
                MessageBox.Show("returning bitmap");
                  return Image.FromStream(str);            
             }
            else 
            {
                return null;
            }
        }

        public VideoStream()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();
            this.Text = "CCTV Video Streaming";
            this.button1.Text = "Display";
            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if (components != null) 
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.pictureBox1 = new System.Windows.Forms.PictureBox();
            this.button1 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // pictureBox1
            // 
            this.pictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.pictureBox1.Location = new System.Drawing.Point(8, 8);
            this.pictureBox1.Name = "pictureBox1";
            this.pictureBox1.Size = new System.Drawing.Size(360, 200);
            this.pictureBox1.TabIndex = 0;
            this.pictureBox1.TabStop = false;
            // 
            // button1
            // 
            // this.button1.Location = new System.Drawing.Point(232, 24);
            this.button1.Location = new System.Drawing.Point(160, 220);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(56, 23);
            this.button1.TabIndex = 1;
            this.button1.Text = "button1";
            this.button1.Click += new System.EventHandler(this.button1_Click);
       
            // PictureBoxDemo
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(376, 254);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {
                this.button1,
                this.pictureBox1}
            );
            this.Name = "VideoStreamDemo";
            this.Text = "VideoStreamDemo";
            this.ResumeLayout(false);

        }
        #endregion

        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
            static void Main() 
            {
            Application.Run(new VideoStream());
        }
        private void button1_Click(object sender, System.EventArgs e)
        {
            CaptureVideo();
        }
        private void CaptureVideo()
        {
            pictureBox1.SizeMode = PictureBoxSizeMode.CenterImage;
            Image image;
           image  = GetImage("http://192.168.1.102/cgi-bin/nph-zms?mode=jpeg&monitor=1&user=guest&pass=guest");
            pictureBox1.Image = new System.Drawing.Bitmap(image);
        }
    }
}

Yep, that's what it is. The JPEG stream I captured is bogus. I couldn't open it in a paint program. There is definitely something wrong with the format.

Thanx all!!