C＃中的功能等效于Vb6中的CreateObject

Question

VB6代码：

Dim oApplication As SiebelHTMLApplication
Dim oBS As SiebelService
Dim oPSIn As SiebelPropertySet
Dim oPSOut As SiebelPropertySet
Dim sActivityId As String
Set oApplication = CreateObject("Siebel.Desktop_Integration_Application.1")
If oApplication.IsReady Then
    Set oBS = oApplication.GetService("Workflow Process Manager")

C＃代码：-

SiebelHTMLApplication sApp = new SiebelHTMLApplication();
SiebelService sService = new SiebelService();
SiebelPropertySet sPsIn = new SiebelPropertySet();
SiebelPropertySet sPsOut = new SiebelPropertySet();

然后我尝试将VB代码的第6行转换为c＃：

object instance = Activator.CreateInstance(Type.GetTypeFromProgID("Siebel.Desktop_Integration_Application.1"));

但我无法将实例对象转换为SiebelHTMLApplication：

sApp = (SiebelHTMLApplication)instance;

谁能建议我一个设置方法呢？

Answer 1

Type.GetTypeFromProgID创建com实例，但不创建Type对象。

尝试

object instance = Activator.CreateInstance(Type.GetType("Siebel.Desktop_Integration_Application, AssemblyName")); 

您必须将AssemblyName替换为包含Siebel.Desktop_Integration_Application描述的Assembly名称。

Answer 2

您始终可以导入Microsoft.VisualBasic，然后仅使用CreateObject ？

Answer 3

感谢Vasiliy，最后我通过从对象更改为类型得到了解决方案。 然后就可以了！

var siebelDeskType = Activator.CreateInstance(Type.GetTypeFromProgID("Siebel.Desktop_Integration_Application.1"));
            sApp = (SiebelHTMLApplication)siebelDeskType;