I am pretty sure I lifted this from a news group posting but I am not sure where.
using System;
using System.Reflection;
using System.Runtime;
using System.Runtime.InteropServices;
namespace Adastra.General
{
///
/// Easy access to late-binding wrapper
///
public class ComCreateObject
{
private Type comType;
private object comObject;
///
/// Generate new class
///
/// com object prog id
public ComCreateObject(string ProgID)
{
comType = Type.GetTypeFromProgID(ProgID);
if (comType == null)
throw new ArgumentException(
"Com ProgId not found",
"ProgId");
comObject = Activator.CreateInstance(comType);
}
///
/// Execute late-bound method
///
/// method name
/// parameters
///
public object Execute(string method,
params object[] parameters)
{
return comType.InvokeMember(method,
BindingFlags.InvokeMethod,
null,
comObject,
parameters);
}
public void ExecuteSet(string method,
object parameter)
{
ExecuteSet(method, new object[] { parameter });
}
///
/// Execute late-bound property property-set
///
/// property name
/// value
public void ExecuteSet(string propertyName,
params object[] parameters)
{
comType.InvokeMember(propertyName,
BindingFlags.SetProperty,
null,
comObject,
parameters);
}
///
/// Execute late-bound property property-get
///
/// property name
/// parameters
///
public object ExecuteGet(string propertyName,
params object[] parameters)
{
return comType.InvokeMember(propertyName,
BindingFlags.GetProperty,
null,
comObject,
parameters);
}
///
/// Execute late-bound property property-get
///
/// property name
///
public object ExecuteGet(string propertyName)
{
return comType.InvokeMember(propertyName,
BindingFlags.GetProperty,
null,
comObject,
null);
}
public void Dispose()
{
Marshal.ReleaseComObject(comObject);
comObject = null;
}
}
}
// Get type of the COM object xxxx
Type objectType = Type.GetTypeFromProgID("xxxx");
// Create instance of the COM object
object comObject = Activator.CreateInstance( objectType);
// Get the Count property
int count = (int) objectType.InvokeMember(
"Count",
BindingFlags.GetProperty,
null,
comObject,
null);
