WebBrowser Mute (Refresh, click on the sound of the webpage) (including Flash mute)

  public enum Internetfeaturelist {feature_object_caching = 0, feature_zone_elevation = 1 , feature_mime_handling = 2, feature_mime_sniffing = 3, feature_window_restrictions = 4, feature_weboc_popupmanagement = 5, feature_behaviors = 6, Feature_disable_mk_protoc OL = 7, Feature_localmachine_lockdown = 8, Feature_securityband = 9, feature_restrict_             Activexinstall = ten, Feature_validate_navigate_url = one, Feature_restrict_filedownload = 12, Feature_addon_management = Feature_protocol_lockdown = +, Feature_http_username_passwo rd_disable = Feature_safe_bindtoobject = +, Feature_unc_savedfilecheck = +, FEAT             ure_get_url_dom_filepath_unencoded = Feature_tabbed_browsing = 20, Feature_sslux = Feature_disable_navIgation_sounds = +, feature_disable_legacy_compression = Feature_force_addr_and_status = 23,             Feature_xmlhttp = Feature_disable_telnet_protocol = +, feature_feeds = 26, feature_block_input_prompts = Feature_entry_count = +, Private const int Set_featu         Re_on_thread = 0x00000001;         Private Const int set_feature_on_process = 0x00000002;         Private Const int set_feature_in_registry = 0x00000004;         Private Const int set_feature_on_thread_localmachine = 0x00000008;         Private Const int set_feature_on_thread_intranet = 0x00000010;         Private Const int set_feature_on_thread_trusted = 0x00000020;         Private Const int set_feature_on_thread_internet = 0x00000040;         Private Const int set_feature_on_thread_restricted = 0x00000080;         [DllImport ("Urlmon.dll")]         [PreserveSig] [Return:marshalas (Unmanagedtype.error)] Staticextern int cointernetsetfeatureenabled (internetfeaturelist featureentry, [MarshalAs (Unmanagedty Pe.        U4)] int dwFlags, bool fenable);        [DllImport ("Winmm.dll")] public static extern int. int Waveoutgetvolume (INTPTR h, out uint dwvolume);        [DllImport ("Winmm.dll")] public static extern int Waveoutsetvolume (IntPtr h, uint dwvolume); private void Form1_Load (object sender, EventArgs e) {try {//Waveoutsetvolume (0, 0xFFFF); Suppresses the current process from making sound cointernetsetfeatureenabled (internetfeaturelist.                Feature_disable_navigation_sounds, set_feature_on_process, true);                UINT _savedvolume;                Waveoutgetvolume (IntPtr.Zero, out _savedvolume); This. FormClosing + = delegate {//restore the volume upon exit Waveoutsetv                Olume (IntPtr.Zero, _savedvolume);                };             Mute   Waveoutsetvolume (IntPtr.Zero, 0); } catch (Exception ex) {Console.WriteLine (ex.            Message); }}}

WebBrowser Mute (Refresh, click on the sound of the webpage) (including Flash mute)