how to call java script function from activex or dll in c#.

Question

Hi,

I have active-x class written in c# which is multi-threaded. I need to call javascript from my activeX. I tried it by Microsoft.mshtml .

/*JS

function do_Print() {
    control.setPage(this);
    control.scriptPrint();
}

function report_back(report){
    alert("Report:"+report);
}


C#

    public void setPage(mshtml.HTMLWindow2Class JSFile) {
                window = JSFile;
    }
    public void scriptPrint(){
                window.execScript("report_back('Printing complete!')", "JScript");
    }
    */

But its throwing exception

"unable to cast COM object of type 'mshtml.HTMLWindow2Class' to interface type 'mshtml.DispHTMLWindow2'"

Is there another way round. I am able to call active-x function from java script but vice versa still got above exception. Any idea for multi-threaded c# active-x calling javascript function ???

Answer 1

Here is a thread on msdn with several useful links and samples.