You would use the Attribute.GetCustomAttributes Method, with the overload that matches the object where the attribute has been set.

For example if the attribute is set on a method, something like:

MethodInfo mInfo = myClass.GetMethod("MyMethod");
foreach(Attribute attr in Attribute.GetCustomAttributes(mInfo))
{
   if (attr.GetType() == typeof(EntityBindingAttribute))
   {
     int i = ((EntityBindingAttribute)attr).I);
    }
}