Cornerstone.Database.Tables.DatabaseTable.CopyUpdatableValues C# (CSharp) Method

        public void CopyUpdatableValues(DatabaseTable newData)
        {
            if (newData == null) return;
            ReadOnlyCollection<DBField> fieldList = DBField.GetFieldList(newData.GetType());

            foreach (DBField currField in fieldList) {
                object newValue = currField.GetValue(newData);
                object oldValue = currField.GetValue(this);
                if (currField.AutoUpdate) {

                    if (newValue == null) {
                        currField.SetValue(this, newValue);
                        continue;
                    }

                    // if the updated value is just the default, don't update.
                    // something is better than nothing
                    if (newValue.Equals(currField.Default))
                        continue;

                    // if we have a string try to compare trimmed strings
                    if (newValue.GetType() == typeof(string) && ((string)newValue ?? string.Empty).Trim() == ((string)oldValue ?? string.Empty).Trim())
                        continue;

                    // if the value just hasn't changed, dont update
                    if (newValue.Equals(oldValue))
                        continue;

                    // check if the old value is the default value
                    bool oldValueIsDefault = false;
                    if (oldValue is string && currField.Default is string) {
                        if (((string)oldValue ?? string.Empty).Trim().Equals(((string)currField.Default).Trim()))
                            oldValueIsDefault = true;
                    }
                    else if (oldValue == null || oldValue.Equals(currField.Default))
                        oldValueIsDefault = true;

                    // if we are protecting non-default values continue
                    if (protectExistingValuesFromCopy && !oldValueIsDefault)
                        continue;

                    currField.SetValue(this, newValue);
                }
            }
            // reset the value protection to true again
            protectExistingValuesFromCopy = true;
        }