Question

I am using many ipz and use them one after another some repeat after some time some with in seconds using this code:

  string key = "Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings";

  RegistryKey RegKey = Registry.CurrentUser.OpenSubKey(key, true);

  RegKey.SetValue("ProxyServer", proxy);

  RegKey.SetValue("ProxyEnable", 1);

  webBrowser1.Navigate(customLinks[0].ToString());

The issue is its not always successful as i noticed many time.Suppose an ip is blocked so it takes the next one but i still see the block on the next one ,and even the next one.

So assuming its not taking proxy so fast etc?Maybe it needs to be refreshed.Kindly let me know how to implement this

Thank you

Answer 1

I got help from googling a lot , but do not remember the exact link:

Here is the code, i call the refresh function and pass proxy and it works 100 % everytime , anytime.

public struct Struct_INTERNET_PROXY_INFO
    {
        public int dwAccessType;
        public IntPtr proxy;
        public IntPtr proxyBypass;
    };

    [DllImport("wininet.dll", SetLastError = true)] 
    private static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int lpdwBufferLength);

    private void RefreshIESettings(string strProxy)
    {
        const int INTERNET_OPTION_PROXY = 38;
        const int INTERNET_OPEN_TYPE_PROXY = 3;

        Struct_INTERNET_PROXY_INFO struct_IPI;



        // Filling in structure
        struct_IPI.dwAccessType = INTERNET_OPEN_TYPE_PROXY;
        struct_IPI.proxy = Marshal.StringToHGlobalAnsi(strProxy);
        struct_IPI.proxyBypass = Marshal.StringToHGlobalAnsi("local");

        // Allocating memory
        IntPtr intptrStruct = Marshal.AllocCoTaskMem(Marshal.SizeOf(struct_IPI));

        // Converting structure to IntPtr
        Marshal.StructureToPtr(struct_IPI, intptrStruct, true);

        bool iReturn = InternetSetOption(IntPtr.Zero, INTERNET_OPTION_PROXY, intptrStruct, Marshal.SizeOf(struct_IPI));


    }