Problem Working With Image...

Question

Can Somebody help,,
I am using this code on button2 Click Event and it will
generate the list with Name & Description... and create .JPG file into local drive corresponding to Name
and when I click to grid then image box will load the JPG Image from the local drive.

Now the Problem is when I put some value and click then it will generate list, and put new value into text box then it will generate list with new value, but if i just put the first value and click then an Exception occurs (IOException), this is used by another process...see the red Hilighted area.

 private void button2_Click(object sender, EventArgs e)
        {
           
            try
            {
                SqlDataReader myReader = null;
                //button1.Enabled = false;

                imgTest.Image = null;
                txtDesc.Text = "";

                string iPath = Application.StartupPath.ToString().Replace("\\", "#$");
                iPath = iPath.Replace('#', '\\');
                iPath = iPath.Replace('$', '\\');
                iPath += "\\" + "\\TestPic";

                /*if (Directory.Exists(iPath) == true)
                {
                    Directory.Delete(iPath,true);
                }
                Directory.CreateDirectory(iPath);*/
                //MessageBox.Show(iPath);
                //iPath += "\\TestPic" + "\\" + st1 + ".JPG";

                // **** Read BLOB from the Database and save it on the Filesystem

                //int protorefno = int.Parse(DataService.GetSingleValue(conn, "select protorefno from tblProtoList where protono='" + cmbProtoNo.Text.ToString() + "'"));

                SqlCommand getPic = new SqlCommand(
                    "SELECT srcname, srcdesc, pic " +
                    "FROM tblTestReportImg " +
                    "WHERE srcdesc like '%"+ textBox1.Text.ToString()+"%'", conn);

                //getPic.Parameters.Add("@PRN", SqlDbType.BigInt).Value = protorefno;
                //getPic.Parameters.Add("@PRN", SqlDbType.VarChar).Value = textBox1.Text;
                //getPic.Parameters.Add("@FirstName", SqlDbType.NVarChar, 10).Value = pfirstName;

                FileStream fs;                          // Writes the BLOB to a file (*.bmp).
                BinaryWriter bw;                        // Streams the BLOB to the FileStream object.
                int bufferSize = 100;                   // Size of the BLOB buffer.
                byte[] outbyte = new byte[bufferSize];  // The BLOB byte[] buffer to be filled by GetBytes.
                long retval;                            // The bytes returned from GetBytes.
                long startIndex = 0;                    // The starting position in the BLOB output.
                string picname = "";                     // The Picture Name to use in the file name.
                string desc = "";                     // The Description to use in the file name.

                //Define the Destination Path


                // Open the connection and read data into the DataReader.
                if (conn.State.ToString().ToUpper() != "OPEN")
                    conn.Open();

                myReader = getPic.ExecuteReader(CommandBehavior.SequentialAccess);

                lstImage.Items.Clear();
                if (myReader.HasRows == true)
                {
                    while (myReader.Read())
                    {
                        // Get the employee id, which must occur before getting the employee.
                        picname = myReader.GetString(0).ToString(); //.GetInt32(0).ToString();
                        desc = myReader.GetString(1).ToString();

                        ListViewItem it1 = lstImage.Items.Add(picname.ToString());
                        it1.SubItems.Add(desc.ToString());


                        // Create a file to hold the output.
                        iPath += "\\" + "\\";
                        if (File.Exists(iPath + picname + ".JPG") == true)
                        {
                            //MessageBox.Show(File.GetLastAccessTime(iPath + picname + ".JPG").ToString());
                            File.Delete(iPath + picname + ".JPG");
                            //Error msg: You cant delete this file it is being used by anathor process
                        }
                      //Here comes Exception when I erase upper red line.
                        fs = new FileStream(iPath + picname + ".JPG", FileMode.Create, FileAccess.Write);
                      //If I click button2 after few time then there is no error or exception
                      //When I click button2 then Create jpg file to local drive and again same click then error occurs that this file is used by anathor process.
                         //Is there any solution so that I can realize or stoped process to continue above line
                        bw = new BinaryWriter(fs);

                        // Reset the starting byte for the new BLOB.
                        startIndex = 0;

                        // Read the bytes into outbyte[] and retain the number of bytes returned.

                        retval = myReader.GetBytes(2, startIndex, outbyte, 0, bufferSize);

                        // Continue reading and writing while there are bytes beyond the size of the buffer.
                        while (retval == bufferSize)
                        {
                            bw.Write(outbyte);
                            bw.Flush();

                            // Reposition the start index to the end of the last buffer and fill the buffer.
                            startIndex += bufferSize;
                            retval = myReader.GetBytes(2, startIndex, outbyte, 0, bufferSize);
                        }

                        // Write the remaining buffer.
                        bw.Write(outbyte, 0, (int)retval);
                        bw.Flush();

                        // Close the output file.
                        bw.Close();
                        fs.Close();
                    }

                    // Close the reader and the connection.
                    myReader.Close();
                    if (conn.State.ToString().ToUpper() == "OPEN")
                        conn.Close();
                }
                else
                {
                    myReader.Close();
                    if (conn.State.ToString().ToUpper() == "OPEN")
                        conn.Close();
                }
                /*sql = "select tr.* from tblProtoList p,tblTestReportImg tr where p.protono='" + cmbProtoNo.Text.ToString() + "' and p.protorefno=tr.protorefno order by tr.picind asc";
                r = DataService.SelectData(conn, sql);
                lstImage.Items.Clear();
                if (r.HasRows == true)
                {
                    while (r.Read())
                    {
                        ListViewItem it1 = lstImage.Items.Add(r["srcname"].ToString());
                        it1.SubItems.Add(r["srcdesc"].ToString());

                           
                        //MessageBox.Show(bt.ToString());
                        //it1.SubItems.Add(r["pic"].ToString());
                           
                    }
                    r.Close();
                }*/

                //button1.Enabled = true;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
               
        }

I am not good in English.
Pardon me if there is/are any mistake.

Best Regards,
Abdullah Al Mamun