Question

我正在用.Net编写ActiveX对象，需要该对象可以使用ie11将事件触发到客户端页面，但是现在当我触发事件时，将引发NotImplementedException。

页面代码为：

<!DOCTYPE html>
<script language="javascript" for="RegisterTestClass" event="OnSetString()" type="text/javascript">
    alert("Event is raised");
</script>
<object id="RegisterTestClass" name="RegisterTestClass" style="width:0px;height:0px;display:none" classid="CLSID:336A359B-EEC4-47EB-AA8D-B9DD0D4D4B5B"></object>
<script type="text/javascript">
    function SetOCXString(varStr)
    {
        alert("SetOCXString");
        RegisterTestClass.SetString(varStr);
    }
</script>
<html>
<head>
    <meta charset="utf-8" />
    <title>Test OCX</title>
</head>
<body>
    <button onclick="SetOCXString('Hello World!');"> Click me!</button>
</body>
</html>

ActiveX文件为：

[Guid("7279003B-0619-4E19-95BC-F22BD29CC950")]
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
public interface ITestEvent
{
    void OnSetString();
}

[ComVisible(false)]
public delegate void EventHandlerTest();

[Guid("336A359B-EEC4-47EB-AA8D-B9DD0D4D4B5B")]
[ComSourceInterfaces(typeof(ITestEvent))]
public class RegisterTestClass
{
    public event EventHandlerTest OnSetString;

    public void SetString(string str)
    {
        MessageBox.Show("SetString:" + str);
        if (null != this.OnSetString)
        {
            try
            {
                MessageBox.Show("Event is not null:" + this.OnSetString.Target.ToString() + "," + this.OnSetString.Method.Name);
                this.OnSetString();
                MessageBox.Show("Event raised");
            }
            catch (Exception e)
            {
                MessageBox.Show(e.StackTrace, e.Source + e.Message);
            }
        }
        else
        {
            MessageBox.Show("Event is null");
        }
    }
}

有人可以帮助我吗？谢谢

Answer 1

我刚刚解决了这个问题。

只需为ITestEvent.OnSetString添加一个“ DispId”即可。所以编码是：

[Guid("7279003B-0619-4E19-95BC-F22BD29CC950")]
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
public interface ITestEvent
{
    [DispId(0x0001)]
    void OnSetString();
}

无法使用.Net（C＃）从ActiveX向客户端触发事件

1 个答案: