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[问与答] C#如何调用 IE 的 ActiveX 控件?

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前言 https://www.v2ex.com/t/1048925
于是想自己写一个 Loader ,忽略证书错误,记住用户名和密码,把登录操作精简到输验证码即可。
Fiddler 抓包分析和复现流程很顺利,最后卡在怎么用 C#调用 ActiveX 上面。。
有没有高手指教一下?

SSO 最后一步,HTML 里调 ActiveX 的代码

<object width="0" height="0" id="client" classid="CLSID:11111111-1111-1111-1111-111111111111" codebase="/download/xxxxxxx.cab" standby="Loading SSL ActiveX components..." type="application/x-oleobject"></object>
<script language="javascript">
    try {
        document.client.login("ip", 443, "sso ticket", "", "id");
        document.client.sendreq(118, "");
    } catch (ex) {
        if (ex.number == -2146827850) {
            // do something
        }
    }
</script>
object comObject = Activator.CreateInstance(Type.GetTypeFromCLSID(Guid.Parse("11111111-1111-1111-1111-111111111111")));
MethodInfo methodInfo = comObject.GetType().GetMethod("login");
// 无法调用,methodInfo == null

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