public object GetProperty(string name, out bool isCacheable, params object[] args)
{
isCacheable = false;
DispatchMember member = null;
if (args.Length < 1)
{
// some objects crash on attempt to retrieve a method as a property
member = GetMembers().FirstOrDefault(testMember => testMember.Name == name);
if ((member != null) && member.DispatchFlags == DispatchFlags.Method)
{
return(new HostMethod(hostItem, name));
}
}
try
{
var result = dispatch.GetProperty(name, args);
return(result);
}
catch (Exception)
{
if (args.Length < 1)
{
if (member == null)
{
member = GetMembers().FirstOrDefault(testMember => testMember.Name == name);
}
if ((member != null) && !member.DispatchFlags.HasFlag(DispatchFlags.Method))
{
return(new HostIndexedProperty(hostItem, name));
}
return(new HostMethod(hostItem, name));
}
throw;
}
}
public static object InvokeMethod(this IDispatch dispatch, string name, params object[] args)
{
var dispid = dispatch.GetDispIDForName(name);
if (dispid == SpecialDispIDs.GetEnumerator)
{
return(dispatch.GetProperty(SpecialMemberNames.NewEnum, args));
}
using (var argVariantArrayBlock = new CoTaskMemVariantArgsByRefBlock(args))
{
using (var resultVariantBlock = new CoTaskMemVariantBlock())
{
var dispArgs = new DISPPARAMS {
cArgs = args.Length, rgvarg = argVariantArrayBlock.Addr, cNamedArgs = 0, rgdispidNamedArgs = IntPtr.Zero
};
HResult.Check(dispatch.Invoke(dispid, iid, 0, DispatchFlags.Method, ref dispArgs, resultVariantBlock.Addr, out _, out _));
return(Marshal.GetObjectForNativeVariant(resultVariantBlock.Addr));
}
}
}
