public override Object Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
{
// Do they want us to process Default Values?
if (parameters != null && parameters.Length > 0)
{
int length = parameters.Length;
ParameterInfo[] p = null;
for (int i = 0; i < length; i++)
{
// if the parameter is missing we need to get a default value.
if (parameters[i] == Type.Missing)
{
if (p == null)
{
p = GetParameters();
// If the parameters and the number of parameters passed are
// not the same then we need to exit.
if (p.Length != length)
{
throw new ArgumentException(Environment.GetResourceString("Arg_ParmCnt"), "parameters");
}
}
if (p[i].DefaultValue == System.DBNull.Value)
{
throw new ArgumentException(Environment.GetResourceString("Arg_VarMissNull"), "parameters");
}
parameters[i] = p[i].DefaultValue;
}
}
// Check for attempt to create a delegate class, we demand unmanaged
// code permission for this since it's hard to validate the target
// address.
if (RuntimeType.CanCastTo((RuntimeType)DeclaringType, (RuntimeType)typeof(Delegate)))
{
new SecurityPermission(SecurityPermissionFlag.UnmanagedCode).Demand();
}
Object[] args = new Object[length];
for (int index = 0; index < length; index++)
{
args[index] = parameters[index];
}
Object retValue = InternalInvoke(invokeAttr, binder, args, culture, binder == Type.DefaultBinder);
for (int index = 0; index < length; index++)
{
parameters[index] = args[index];
}
return(retValue);
}
return(InternalInvoke(invokeAttr, binder, parameters, culture, binder == Type.DefaultBinder));
}