Make .NET WebBrowser not to share cookies with IE or other Instances

回眸只為那壹抹淺笑 提交于 2019-11-30 10:05:47

You could do this per process using the InternetSetOption Win32 function:

[DllImport("wininet.dll", CharSet = System.Runtime.InteropServices.CharSet.Auto, SetLastError = true)]
public static extern bool InternetSetOption(int hInternet, int dwOption, IntPtr lpBuffer, int dwBufferLength);

and then at your application startup call the following function:

private unsafe void SuppressWininetBehavior()
{
    /* SOURCE: http://msdn.microsoft.com/en-us/library/windows/desktop/aa385328%28v=vs.85%29.aspx
    * INTERNET_OPTION_SUPPRESS_BEHAVIOR (81):
    *      A general purpose option that is used to suppress behaviors on a process-wide basis. 
    *      The lpBuffer parameter of the function must be a pointer to a DWORD containing the specific behavior to suppress. 
    *      This option cannot be queried with InternetQueryOption. 
    *      
    * INTERNET_SUPPRESS_COOKIE_PERSIST (3):
    *      Suppresses the persistence of cookies, even if the server has specified them as persistent.
    *      Version:  Requires Internet Explorer 8.0 or later.
    */


    int option = (int)3/* INTERNET_SUPPRESS_COOKIE_PERSIST*/;
    int* optionPtr = &option;

    bool success = InternetSetOption(0, 81/*INTERNET_OPTION_SUPPRESS_BEHAVIOR*/, new IntPtr(optionPtr), sizeof(int));
    if (!success)
    {
        MessageBox.Show("Something went wrong !>?");
    }
}
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