vb.net 使用 Javascript ActiveX 对象触发 C# dll
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Triggering C# dll using Javascript ActiveX Object
提问by Geo Paul
I have a c# class library which I need to call using Javascript. Below is the code of C# class.
我有 ac# 类库，我需要使用 Javascript 调用它。下面是 C# 类的代码。
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.Windows.Forms; //required for message box.
namespace csharp.activex.sample
{
[Guid("0D53A3E8-E51A-49C7-944E-E72A2064F938"),
InterfaceType(ComInterfaceType.InterfaceIsDual),
ComVisible(true)]
public interface IHello
{
[DispId(1)]
int ShowDialog();
};
[
Guid("873355E1-2D0D-476f-9BEF-C7E645024C32"),
ProgId("csharpAx.CHello"),
ClassInterface(ClassInterfaceType.None),
ComDefaultInterface(typeof(IHello)),
ComVisible(true)
]
public class CHello : IHello
{
#region [IHello implementation]
public string Hello()
{
return "Hello from CHello object";
}
public int ShowDialog()
{
System.Windows.Forms.MessageBox.Show("C# is awesome");
return 0;
}
#endregion
};
public class Class1
{
public void showDialog() {
MessageBox.Show("Visual c# is awesome!");
}
}
}
I build the class and I get a dll file which I copied to c:\DLL. Below code is used to register the DLL
我构建了这个类，并得到了一个 dll 文件，我将它复制到了 c:\DLL。下面的代码用于注册DLL
regasm C:\DLL\ActiveXClass.dll /codebase /tlb
I get the message types registered successfully.
我成功注册了消息类型。
I create a html file with following javascript code.
我使用以下 javascript 代码创建了一个 html 文件。
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<script type='text/javascript'>
var myAx1;
function startService(){
myAx1 = new ActiveXObject("csharpAx.CHello");
if(myAx1 != null)
{
myAx1.showDialog();
}
else{
alert("failed");
}
return false;
}
</script>
</head>
<body class="sapUiBody" role="application">
<div id="content"></div>
<a href='#' onclick='return startService()'>StartService</a><br />
</body>
</html>
On the result page thus obtained I click on start service. But I do not get any alerts like "failed" or "Visual C# is awesome".
在如此获得的结果页面上，我单击启动服务。但是我没有收到任何警报，例如“失败”或“Visual C# 很棒”。
Please help
请帮忙
回答by Geo Paul
I solved it. There is a Security option for activex that needs to be enabled for doing this.
我解决了。需要启用 Activex 的安全选项才能执行此操作。
For more details check this link http://www.aras.com/Community/forums/p/2527/7698.aspx
有关更多详细信息，请查看此链接 http://www.aras.com/Community/forums/p/2527/7698.aspx
回答by Giulio Caccin
I think the best solution is to implement IObjectSafety, if you trust you activex you don't need to make your user to check internet options. This link at point 5 explain how to do it: http://www.olavaukan.com/2010/08/creating-an-activex-control-in-net-using-c/
我认为最好的解决方案是实现 IObjectSafety，如果您信任您的 Activex，您不需要让您的用户检查 Internet 选项。第 5 点的此链接解释了如何操作：http: //www.olavaukan.com/2010/08/creating-an-activex-control-in-net-using-c/
