一直以来，C#中如果放多个webBrowser都会共享同一个cookie，但是实际应用中，需要不同的webBrowser 对应不同的cookie。
解决代码方法如下：
[DllImport("wininet.dll", CharSet = System.Runtime.InteropServices.CharSet.Auto, SetLastError = true)]
public static extern bool InternetSetOption(int hInternet, int dwOption, IntPtr lpBuffer, int dwBufferLength);
#region 一个进程一个COOKIE的关键代码
/* 一个进程中的webBrowser共享一个cookie，webBrowser.Navigate()之前调用方法SuppressWininetBehavior()即可*/
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 !>?");
}
}
#endregion使用方法：
SuppressWininetBehavior();
web.Navigate("https://mp.weixin.qq.com/");
