C# Open File Dialogue Error

private void loadImageToolStripMenuItem_Click(object sender, EventArgs e)
       {
           try
           {
               Image_Record_Exists = false;
               image_entry_id = 0;
               CAMI_ID = 0;
               OFDImage = new OpenFileDialog();
               OFDImage.Title = "Please select Image.";
               OFDImage.Filter = "Image Files(*.BMP;*.JPG;*.GIF)|*.BMP;*.JPG;*.GIF";

               if (OFDImage.ShowDialog() == DialogResult.OK)
               {
                   try
                   {
                       //check if record exists
                       Reader_String = "";
                       Reader_String = "SELECT CAMI_ID FROM CAM_IMAGES WHERE ((CAMI_COMPNUM = " + Sys_Company + ")AND(CAMI_SITENUM = " + Sys_Site + ")AND(CAMI_BUILDNUM = " + Sys_Building + ")AND(CAMI_CAMNUM = " + Sys_Camera + ")AND(CAMI_ENTRYNUM = " + Sys_Entry + "))";
                       Reader = usedb.ExecuteQuery(Reader_String);

                       while (Reader.Read())
                       {
                           CAMI_ID = (int)Reader["CAMI_ID"];
                           Image_Record_Exists = true;
                       }
                       Reader.Close();

                       Image_New = Image.FromFile(OFDImage.FileName);

                       if (Image_Record_Exists == false) //new record
                       {
                           Reader_String = "";
                           Reader_String = "SELECT MAX(CAMI_ID)FROM CAM_IMAGES";
                           Reader = usedb.ExecuteQuery(Reader_String);

                           if (Reader.Read() == true)
                           {
                               results = Reader[0].ToString();
                               if (results == "")
                               {
                                   image_entry_id = 1;
                               }
                               else
                               {
                                   image_entry_id = Convert.ToInt32(results) + 1;
                               }
                           }
                           Reader.Close();

                           Apt_String = "INSERT INTO CAM_IMAGES(CAMI_ID,CAMI_COMPNUM,CAMI_SITENUM,CAMI_BUILDNUM,CAMI_CAMNUM,CAMI_ENTRYNUM,CAMI_DATE,CAMI_IMGDEVICE)VALUES(" + image_entry_id + "," + Sys_Company + "," + Sys_Site + "," + Sys_Building + "," + Sys_Camera + "," + Sys_Entry + ",'" + DateTime.Now + "',@Image)";
                           Apt = usedb.Image_Insert(Apt_String, Image_New);
                       }
                       else //insert new record
                       {
                           Apt_String = "";
                           Apt_String = "UPDATE CAM_IMAGES SET CAMI_IMGDEVICE = @Image WHERE ((CAMI_COMPNUM = " + Sys_Company + ")AND(CAMI_SITENUM = " + Sys_Site + ")AND(CAMI_BUILDNUM = " + Sys_Building + ")AND(CAMI_CAMNUM = " + Sys_Camera + ")AND(CAMI_ENTRYNUM = " + Sys_Entry + ")AND(CAMI_ID = " + CAMI_ID + "))";
                           Apt = usedb.Image_Insert(Apt_String, Image_New);
                       }
                       PBDevice.Image = Image_New;
                       OFDImage.Dispose();
                   }
                   catch (Exception ex)
                   {
                       Write_Log("An error has occured.\nError: " + Convert.ToString(ex));
                   }
               }
           }
           catch (Exception ex)
           {
               Write_Log("An error has occured.\nError: " + Convert.ToString(ex));
           }
       }