C# 将字符串（符合xml格式）转换为XmlDocument

         /// <summary>
/// 将字符串（符合xml格式）转换为XmlDocument
/// </summary>
/// <param name="xmlString">XML格式字符串</param>
/// <returns></returns>
public XmlDocument ConvertStringToXmlDocument(string xmlString)
{
XmlDocument document = new XmlDocument();
document.LoadXml(xmlString);
return document;
}