public override object GetProperty(string name, params object[] args)
{
VerifyNotDisposed();
var result = engine.MarshalToHost(engine.ScriptInvoke(() =>
{
try
{
var value = target.GetProperty(name, false, engine.MarshalToScript(args));
return((value is Nonexistent) ? Undefined.Value : value);
}
catch (Exception exception)
{
if (!name.IsDispIDName(out _) && (exception.HResult != HResult.DISP_E_UNKNOWNNAME))
{
// Property retrieval failed, but a method with the given name exists;
// create a tear-off method. This currently applies only to VBScript.
return(new ScriptMethod(this, name));
}
return(Undefined.Value);
}
}), false);
if ((result is WindowsScriptItem resultScriptItem) && (resultScriptItem.engine == engine))
{
resultScriptItem.holder = this;
}
return(result);
}
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 = dispatchEx.GetMembers().FirstOrDefault(testMember => testMember.Name == name);
if ((member != null) && member.DispatchFlags == DispatchFlags.Method)
{
return(new HostMethod(hostItem, name));
}
}
try
{
var result = dispatchEx.GetProperty(name, false, args);
return(result);
}
catch (Exception)
{
if (args.Length < 1)
{
if (member == null)
{
member = dispatchEx.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 IDispatchEx dispatchEx, string name, bool ignoreCase, params object[] args)
{
var dispid = dispatchEx.GetDispIDForName(name, false, ignoreCase);
if (dispid == SpecialDispIDs.GetEnumerator)
{
return(dispatchEx.GetProperty(SpecialMemberNames.NewEnum, ignoreCase, 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(dispatchEx.InvokeEx(dispid, 0, DispatchFlags.Method, ref dispArgs, resultVariantBlock.Addr, out _));
return(Marshal.GetObjectForNativeVariant(resultVariantBlock.Addr));
}
}
}
public object GetProperty(string name, object[] args, out bool isCacheable)
{
isCacheable = false;
return(dispatchEx.GetProperty(name, false, args));
}
