本文实例讲述了C#清除WebBrowser中Cookie缓存的方法。分享给大家供大家参考，具体如下：
最近用C#写一个程序，用一个窗体中的WebBrowser来登陆网站，但是WebBrowser有cookie缓存，第二次登陆的时候WebBrowser仍然是第一次登陆后的状态，所以要清除WebBrowser的cookie缓存。
在stackoverflow上找到一段可用的代码：
[DllImport( "wininet.dll" , CharSet = System.Runtime.InteropServices.CharSet.Auto, SetLastError = true )]
public static extern bool InternetSetOption( int hInternet, int dwOption, IntPtr lpBuffer, int dwBufferLength);
private unsafe void SuppressWininetBehavior()
{
/* SOURCE: http://msdn.microsoft测试数据/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 !>?" );
}
}
希望本文所述对大家C#程序设计有所帮助。
dy("nrwz");
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