System.Xml.XsdCachingReader.AddAttribute C# (CSharp) Méthode

        private ValidatingReaderNodeData AddAttribute(int attIndex)
        {
            Debug.Assert(attIndex <= _attributeEvents.Length);
            ValidatingReaderNodeData attInfo = _attributeEvents[attIndex];
            if (attInfo != null)
            {
                attInfo.Clear(XmlNodeType.Attribute);
                return attInfo;
            }
            if (attIndex >= _attributeEvents.Length - 1)
            { //reached capacity of array, Need to increase capacity to twice the initial
                ValidatingReaderNodeData[] newAttributeEvents = new ValidatingReaderNodeData[_attributeEvents.Length * 2];
                Array.Copy(_attributeEvents, 0, newAttributeEvents, 0, _attributeEvents.Length);
                _attributeEvents = newAttributeEvents;
            }
            attInfo = _attributeEvents[attIndex];
            if (attInfo == null)
            {
                attInfo = new ValidatingReaderNodeData(XmlNodeType.Attribute);
                _attributeEvents[attIndex] = attInfo;
            }
            return attInfo;
        }