How to invoke COM members

[nano2k]

Hi

I need to implement a method like this:

object InvokeCOMMember(object obj, string memberName, params object[]
parameters);

The method takes a COM class reference (obj) and tries to invoke a
member (memberName) using the specified parameters (parameters), then
returns the result back.

Thanks.

 

[Alberto Poblacion]

object InvokeCOMMember(object obj, string memberName, params object[]
parameters);

The method takes a COM class reference (obj) and tries to invoke a
member (memberName) using the specified parameters (parameters), then
returns the result back.

If you are receiving "obect obj", it is not a reference to the COM class,
but to the managed wrapper that you have previously generated around the COM
class (or Visual Studio did for you when you added the Reference).
Therefore, from the point of view of your method, calling the members in obj
is just calling .Net members, regardless of whether they get later
translated into COM calls. So you should be able to call them by using
standard Reflection:

using System.Reflection;
....
private object InvokeCOMMember(object obj, string memberName, params
object[] parameters)
{
Type t = obje.GetType();
MethodInfo mi = t.GetMethod(memberName);
return mi.invoke(obj, parameters);
}

 

[nano2k]

object InvokeCOMMember(object obj, string memberName, params object[]
parameters);

The method takes a COM class reference (obj) and tries to invoke a
member (memberName) using the specified parameters (parameters), then
returns the result back.

If you are receiving "obect obj", it is not a reference to the COM class,
but to the managed wrapper that you have previously generated around the COM
class (or Visual Studio did for you when you added the Reference).
Therefore, from the point of view of your method, calling the members in obj
is just calling .Net members, regardless of whether they get later
translated into COM calls. So you should be able to call them by using
standard Reflection:

using System.Reflection;
...
private object InvokeCOMMember(object obj, string memberName, params
object[] parameters)
{
Type t = obje.GetType();
MethodInfo mi = t.GetMethod(memberName);
return mi.invoke(obj, parameters);



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Thank you Alberto.
Too obvious to see it