如何使用javascript调用C＃类的COM互操作

Question

I created COM Interop of an C# Class to access this interop usng javascript. 我创建了一个C＃类的COM互操作，以使用JavaScript来访问此互操作。 The Class Contains an Addition() Method but the method can not be access in javascript. 该类包含一个Addition（）方法，但是该方法无法在javascript中访问。

Code as Below 代码如下

Interface IMathInterface 接口IMathInterface

namespace CCWTEST
{
    [Guid("756892A0-1242-4BF7-984D-C13E68000E8E")]
    [ComVisible(true)]
    [InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
    public interface IMathInterface
    {
        [DispId(1)]
        int Addition(int i, int j);
    }
}

Class ClassMath 类ClassMath

[Guid("CA9AD3A7-BD31-4BE2-A780-8864D493BA5F")]
[ComVisible(true)]
[ClassInterface(ClassInterfaceType.None)]
[ProgId("CCWTEST.ClassMath")]
public class ClassMath : IMathInterface
{
    [ComVisible(true)]
    public int Addition(int x, int y)
    {
        return x + y;
    }
}

Then created snk file CCWMathTest.snk also register into GACUtil. 然后创建的snk文件CCWMathTest.snk也注册到GACUtil中。 then Create a tlb file using RegAsm command.All these thing is done successfully. 然后使用RegAsm命令创建一个tlb文件。所有这些操作均成功完成。

then create an web application to access an Class Method into javascript. 然后创建一个Web应用程序以将类方法访问javascript。

Code 码

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication1.WebForm1" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <object classid="CLSID:CA9AD3A7-BD31-4BE2-A780-8864D493BA5F" height="0" width="0"
        id="obj7" name="obj7">
    </object>
       <title></title>
    <script type="text/javascript">
        window.onload = onLoad;
        function onLoad() {

            alert(obj7.Addition(3,1));

        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    </div>
    </form>
</body>
</html>

while running this code it gives me an error "Object doesn't support property or method 'Addition'" How Can I access this method in Javascript using COM interop 在运行此代码时，它给我一个错误“对象不支持属性或方法'添加'”我如何使用COM互操作在Javascript中访问此方法

Answer 1

Why do you calling it from javascript? 你为什么用javascript调用它？ Make a WebMethod on your page, which calls COM object, and then just call this mehod via AJAX from javascript. 在页面上创建一个WebMethod，该WebMethod调用COM对象，然后通过javascript通过AJAX调用此方法。 Like this: 像这样：

//server side
[WebMethod]
public static string DoSomething()
{
    //call COM
    return "something";
}

//client side
$.ajax({
    type: "POST",
    url: "page.aspx/DoSomething",
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: OnSuccess,
    failure: function (response) {
        alert(response.d);
        },
        error: function (response) {
            alert(response.d);
        }
});

如何使用javascript调用C＃类的COM互操作

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如何使用javascript调用C＃类的COM互操作

问题描述

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解决方案1
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