/// <summary>
/// Generate an automatic hash code for an object based on members of that object.
/// </summary>
/// <param name="obj">The object to search.</param>
/// <param name="selector">Choose what object members to use in hash code generation</param>
/// <returns>A hash code</returns>
public static int GetAutoHashCode(this object obj, MemberSelector selector = MemberSelector.PublicProperties)
{
var type = obj.GetType();
List <object> hashCodes = new List <object>();
if (selector.HasFlag(MemberSelector.PublicProperties))
{
hashCodes.AddRange(type.GetProperties(BindingFlags.Public | BindingFlags.Instance).Select(p => p.GetValue(obj)));
}
if (selector.HasFlag(MemberSelector.PrivateProperties))
{
hashCodes.AddRange(type.GetProperties(BindingFlags.NonPublic | BindingFlags.Instance).Select(p => p.GetValue(obj)));
}
if (selector.HasFlag(MemberSelector.PublicFields))
{
hashCodes.AddRange(type.GetFields(BindingFlags.Public | BindingFlags.Instance).Select(p => p.GetValue(obj)));
}
if (selector.HasFlag(MemberSelector.PrivateFields))
{
hashCodes.AddRange(type.GetFields(BindingFlags.Public | BindingFlags.Instance).Select(p => p.GetValue(obj)));
}
return(GetAutoHashCode(null, hashCodes.ToArray()));
}
