BHO开发中, javascript中调用c#中方法
1.首先定义一个c#的接口给js调用
[
ComVisible(true),
Guid("FC4801A3-2BA9-11CF-A229-00AA003D7352"), // Never EVER change this UUID!! It allows this BHO to find IE and attach to it
InterfaceType(ComInterfaceType.InterfaceIsDual)
]
public interface IExtension
{
[DispId(1)]
bool Foo(); //声明
}
2.然后在BHO主类中声明
namespace IEExtension
{
[
ComVisible(true),
Guid("2159CB25-EF9A-54C1-B43C-E30D1A4A8277"),
ClassInterface(ClassInterfaceType.None), ProgId("MyExtension"), //ProgId要加
ComDefaultInterface(typeof(IExtension)) //这行也要加上
]
public partial class BHO : IObjectWithSite , IExtension //继承要导出的类
{
public InternetExplorer ieInstance;//IE TAB is just an IE instance
public IHTMLDocument3 document;
public HTMLElementEvents2_Event rootElementEvents = null;
public IHTMLEventObj2 eventObj;
....
bool Foo() //实现该方法
{
return true;
}
3.在BeforeScritpt方法中，添加如下代码
setSite中
_webBrowser = (IWebBrowser)site;
ieInstance.BeforeScriptExecute +=
new DWebBrowserEvents2_BeforeScriptExecuteEventHandler(
ieInstance_BeforeScritpt);
public void ieInstance_BeforeScritpt(object pDispWindow)
{
dynamic window = _webBrowser.Document.parentWindow;
var windowEx = (IExpando)window;
PropertyInfo p = windowEx.AddProperty("myExtension");
p.SetValue(windowEx, this);
}
4.在js中调用
var checkResult = window.myExtension.Foo();
参考连接：
https://ask.helplib.com/CSharp/post_12525833
https://stackoverflow.com/questions/9287961/calling-c-sharp-bho-methods-from-javascript
