Here is an updated version of the ComPlusWrapper that I previously published, this one contains a Hashtable for caching the ProgId/Types as well as a method for invoking methods.
Please post any comments to the code or any improvments to the class.
public
class ComPlusWrapper : IDisposable {
private static volatile Hashtable s_types = new Hashtable();
private static volatile Object s_lock = new Object();
private object _ComPlusObject;
private Type _type;
private bool _IsDisposed = false;
public ComPlusWrapper(string ProgId) {
if(s_types.ContainsKey(ProgId)) {
_type = s_types[ProgId] as Type;
} else {
lock(s_lock) {
_type = Type.GetTypeFromProgID(ProgId, true);
s_types.Add(ProgId, _type);
}
}
_ComPlusObject = System.Activator.CreateInstance(_type);
}
~ComPlusWrapper() {
this.Dispose();
}
public object ComPlusObject{
get {
if(this._IsDisposed) {
throw new ObjectDisposedException(null);
}
return _ComPlusObject;
}
}
public Type ComPlusType {
get {
if(this._IsDisposed) {
throw new ObjectDisposedException(null);
}
return _type;
}
}
public void Dispose() {
if(!this._IsDisposed) {
IDisposable dispose = _ComPlusObject as IDisposable;
if(dispose != null) {
dispose.Dispose();
} else {
System.Runtime.InteropServices.Marshal.ReleaseComObject(_ComPlusObject);
}
_type = null;
_ComPlusObject = null;
}
GC.SuppressFinalize(this);
this._IsDisposed = true;
}
public object InvokeMember(string Name, object[] Arguments) {
return _type.InvokeMember(Name, BindingFlags.InvokeMethod | BindingFlags.Public | BindingFlags.IgnoreCase, null, _ComPlusObject, Arguments);
}
}
