1. vb.net webbrowser 訪問https站點，彈證書安全
在Net.WebRequest.Create 之前,嘗試一下用下面代碼,呵呵,只是網路搜到的,還沒有驗證.
System.Net.ServicePointManager. = New System.Net.Security.(AddressOf )
Public Shared Function (ByVal sender As Object, ByVal certificate As System.Security.Cryptography.X509Certificates.X509Certificate, ByVal chain As System.Security.Cryptography.X509Certificates.X509Chain, ByVal sslPolicyErrors As Net.Security.SslPolicyErrors) As Boolean
Return True
End Function
2. webbrowser 證書錯誤怎麼解決
1、抄
點擊系統時間一看，果真是日期時間不對。點擊更改日期和時間設置。
2、選擇
Internet
時間頁簽，然後點擊更改設置按鈕。
3、勾選與Internet時間伺服器同步，然後點擊立即更新按鈕，最後確定。
4、時間同步成功以後，再次打剛才的網站就再也沒有安全證書有問題的提示了。OK，一切正常，問題解決了。
3. 怎樣給WebBrowser通過InternetSetOption選擇證書
運行錯誤，錯誤碼：
#define ERROR_INTERNET_INCORRECT_HANDLE_TYPE (INTERNET_ERROR_BASE + 18)
代碼如下：
LPWSTR pswzFirstCert = L"sss";// Subject of the first
// certificate.
HCERTSTORE hSystemStore; // The system store handle
PCCERT_CONTEXT pDesiredCert;
pDesiredCert = NULL;
if(hSystemStore = CertOpenStore(
CERT_STORE_PROV_SYSTEM, // The system store will be a
// virtual store.
0, // Encoding type not need with this PROV.
NULL, // Accept the default HCRYPTPROV.
CERT_SYSTEM_STORE_CURRENT_USER,
L"ROOT")) // System store name.//MY CA ROOT SPC 四種
{
printf("Opened the MY system store. \n");
}
else
{
}
//-------------------------------------------------------------------
// Get a certificate that has the string "Full Test Cert" in its subject.
if(pDesiredCert)
CertFreeCertificateContext(pDesiredCert);
if(pDesiredCert=CertFindCertificateInStore(
hSystemStore,
X509_ASN_ENCODING, // Use X509_ASN_ENCODING.
0, // No dwFlags needed.
CERT_FIND_SUBJECT_STR, // Find a certificate with a
// subject that matches the string
// in the next parameter.
pswzFirstCert, // The Unicode string to be found
// in a certificate's subject.
NULL)) // NULL is used so that the
// search will begin at the
// beginning of the certificate
// store.
{
printf("The %S certificate was found. \n",pswzFirstCert);
}
else
{
printf("The %S certificate was not found. \n",pswzFirstCert);
}
if(hSystemStore)
CertCloseStore(hSystemStore, CERT_CLOSE_STORE_CHECK_FLAG);
if( InternetSetOption (0, INTERNET_OPTION_CLIENT_CERT_CONTEXT,
(LPVOID)pDesiredCert, sizeof (CERT_CONTEXT) ) == FALSE )
{
int i = GetLastError();
printf("InternetSetOption failed with error %d. \n",i);
}
if(pDesiredCert) CertFreeCertificateContext(pDesiredCert);
4. webbrowser 證書錯誤怎麼解決
1、 點擊系統時間一看，果真是日期時間不對。點擊更改日期和時間設置。
2、選版擇 Internet 時間頁簽，然後點擊更改設權置按鈕。
3、勾選與Internet時間伺服器同步，然後點擊立即更新按鈕，最後確定。
4、時間同步成功以後，再次打剛才的網站就再也沒有安全證書有問題的提示了。OK，一切正常，問題解決了。