/// <summary> /// Get attribute value of the specified attribute. /// </summary> /// <param name="element"></param> /// <param name="localName"></param> /// <param name="namespaceUri"></param> /// <returns></returns> internal static string?GetAttributeValueEx(this OpenXmlElement element, string localName, string namespaceUri) { try { return(element.GetAttribute(localName, namespaceUri).Value); } catch (KeyNotFoundException) { return(null); } }