XmlHelpers

最近处理数据的时候用到了Xml和其他数据之间的转换，所以整理了一些方法。

class XMLHelper
    {
        /// <summary>
        /// 读取xml模板
        /// </summary>
        /// <param name="filename">相对路径</param>
        /// <returns></returns>
        public static string Getmsg(string filename)
        {
            XmlDocument xmldoc = new XmlDocument();
            string path = AppDomain.CurrentDomain.BaseDirectory;
            string strUrl = path + filename;
            xmldoc.Load(strUrl);
            return xmldoc.InnerXml;
        }
        public static XmlDocument GetXmlDoc(string fielName)
        {
            XmlDocument xmldoc = new XmlDocument();
            string path = AppDomain.CurrentDomain.BaseDirectory;
            string strUrl = path + fielName;
            xmldoc.Load(strUrl);
            return xmldoc;
        }
        public static XmlDocument GetXmlDocument(string xml)
        {
            XmlDocument xmlDoc = new XmlDocument();
            if (!string.IsNullOrEmpty(xml))
            {
                xmlDoc.LoadXml(xml);
            }
            return xmlDoc;
        }
        #region 序列化
        /// <summary>
        /// 序列化
        /// </summary>
        /// <param name="type">类型</param>
        /// <param name="obj">对象</param>
        /// <returns></returns>
        public static string Serializer(Type type, object obj)
        {
            MemoryStream Stream = new MemoryStream();
            XmlSerializer xml = new XmlSerializer(type);
            try
            {
                //序列化对象
                xml.Serialize(Stream, obj);
            }
            catch (InvalidOperationException)
            {
                throw;
            }
            Stream.Position = 0;
            StreamReader sr = new StreamReader(Stream);
            string str = sr.ReadToEnd();

            sr.Dispose();
            Stream.Dispose();

            return str;
        }

        #endregion
        //反序列化
        //接收2个参数:xmlFilePath(需要反序列化的XML文件的绝对路径),type(反序列化XML为哪种对象类型)
        public static object DeserializeFromXml(string xml, Type type)
        {
            object result = null;
            try
            {
                XmlDocument xmlDoc = new XmlDocument();
                xmlDoc.LoadXml(xml);
                MemoryStream ms = new MemoryStream();
                xmlDoc.Save(ms);
                ms.Seek(0, SeekOrigin.Begin);
                XmlSerializer xs = new XmlSerializer(type);
                result = xs.Deserialize(ms);
            }
            catch (Exception ex)
            {
                throw;
            }
            return result;
        }

        /// <summary>
        /// XML转换成DataTable
        /// </summary>
        /// <param name="xmlStr"></param>
        /// <returns></returns>
        public static DataTable XmlToDataTable(string xmlStr)
        {
            if (!string.IsNullOrEmpty(xmlStr))
            {
                StringReader StrStream = null;
                XmlTextReader Xmlrdr = null;
                try
                {
                    DataSet ds = new DataSet();
                    //读取字符串中的信息  
                    StrStream = new StringReader(xmlStr);
                    //获取StrStream中的数据  
                    Xmlrdr = new XmlTextReader(StrStream);
                    //ds获取Xmlrdr中的数据                 
                    ds.ReadXml(Xmlrdr);
                    return ds.Tables[0];
                }
                catch (Exception ex)
                {
                    throw;
                }
                finally
                {
                    //释放资源  
                    if (Xmlrdr != null)
                    {
                        Xmlrdr.Close();
                        StrStream.Close();
                        StrStream.Dispose();
                    }
                }
            }
            return null;
        }
        /// <summary>
        /// 格式化XML
        /// </summary>
        /// <param name="format">XML</param>
        /// <param name="arg">传递DataRow可以直接格式化,也可以自己实现IFormatProvider</param>
        /// <param name="formatProvider"></param>
        /// <returns></returns>
        public static string Format(string format, object arg)
        {
            char[] preChar = new char[] { '{' };
            char[] endChar = new char[] { '}' };
            DataRow row = arg as DataRow;
            if (row != null)
            {
                var RegexStr = string.Format("{0}.+?{1}", string.Join("", preChar.ToArray()), string.Join("", endChar.ToArray()));
                Regex reg = new Regex(RegexStr);
                MatchCollection matchList = reg.Matches(format);
                for (int i = 0; i < matchList.Count; i++)
                {
                    string fieldName = matchList[i].ToString().TrimStart(preChar).TrimEnd(endChar);
                    string fieldVal = string.Empty;
                    if (row.Table.Columns.Contains(fieldName))
                    {
                        fieldVal = row[fieldName].ToString();
                    }
                    format = format.Replace(matchList[i].ToString(), fieldVal);
                }

            }
            
            return format;
        }
    }