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C#實現(xiàn)XML文件與DataTable、Dataset互轉(zhuǎn)

更新時間：2022年04月23日 11:11:02 作者：農(nóng)碼一生

這篇文章介紹了C#實現(xiàn)XML文件與DataTable、Dataset互轉(zhuǎn)的方法，文中通過示例代碼介紹的非常詳細。對大家的學(xué)習(xí)或工作具有一定的參考借鑒價值，需要的朋友可以參考下

一、DataTable轉(zhuǎn)XML

        #region DataTableToXml
        /// <summary>
        /// 將DataTable對象轉(zhuǎn)換成XML字符串
        /// </summary>
        /// <param name="ds">DataSet對象</param>
        /// <returns>XML字符串</returns>
        public static string DataTableToXml(DataTable dt,string sName)
        {
            if (dt != null)
            {
                MemoryStream ms = null;
                XmlTextWriter XmlWt = null;
                try
                {
                    ms = new MemoryStream();
                    //根據(jù)ms實例化XmlWt
                    XmlWt = new XmlTextWriter(ms, System.Text.Encoding.Unicode);
                    //獲取ds中的數(shù)據(jù)
                    dt.TableName = Sql.IsEmptyString(sName) ? "dt2xml" : sName;
                    dt.WriteXml(XmlWt, XmlWriteMode.WriteSchema);
                    int count = (int)ms.Length;
                    byte[] temp = new byte[count];
                    ms.Seek(0, SeekOrigin.Begin);
                    ms.Read(temp, 0, count);
                    //返回Unicode編碼的文本
                    System.Text.UnicodeEncoding ucode = new System.Text.UnicodeEncoding();
                    string returnValue = ucode.GetString(temp).Trim();
                    return returnValue;
                }
                catch (System.Exception ex)
                {
                    throw ex;
                }
                finally
                {
                    //釋放資源
                    if (XmlWt != null)
                    {
                        XmlWt.Close();
                        ms.Close();
                        ms.Dispose();
                    }
                }
            }
            else
            {
                return "";
            }
        }
        #endregion

二、XML轉(zhuǎn)Dataset

方法A:

        #region Xml To DataSet
        public static DataSet XmlToDataSet(string xmlString)
        {
            XmlDocument xmldoc = new XmlDocument();
            xmldoc.LoadXml(xmlString);
            StringReader stream = null;
            XmlTextReader reader = null;
            try
            {
                DataSet xmlDS = new DataSet();
                stream = new StringReader(xmldoc.InnerXml);
                reader = new XmlTextReader(stream);
                xmlDS.ReadXml(reader);
                reader.Close();
                return xmlDS;
            }
            catch (System.Exception ex)
            {
                reader.Close();
                throw ex;
            }
        }
        #endregion

方法B:

        private static  DataSet XMLToDataset()
        {
            string strDBXMLFile = @"F:\TestDir\XML\DBTEST.XML";
            DataSet dsXML = new DataSet();
            dsXML.ReadXml(strDBXMLFile);
            //某個節(jié)點名稱的所有節(jié)點內(nèi)容
             DataTable dtOneNote = dsXML.Tables["SMT"];
            return dsXML;
        }

三、Dataset轉(zhuǎn)XML

            public static string ConvertDataSetToXML(DataSet xmlDS)
            {
                MemoryStream stream = null;
                XmlTextWriter writer = null;

                try
                {
                    stream = new MemoryStream();
                    //從stream裝載到XmlTextReader
                    writer = new XmlTextWriter(stream, Encoding.Unicode);

                    //用WriteXml方法寫入文件.
                    xmlDS.WriteXml(writer);
                    int count = (int)stream.Length;
                    byte[] arr = new byte[count];
                    stream.Seek(0, SeekOrigin.Begin);
                    stream.Read(arr, 0, count);

                    UnicodeEncoding utf = new UnicodeEncoding();
                    return utf.GetString(arr).Trim();
                }
                catch (System.Exception ex)
                {
                    throw ex;
                }
                finally
                {
                    if (writer != null) writer.Close();
                }
            }

四、Dataset轉(zhuǎn)XML文件

            public static void ConvertDataSetToXMLFile(DataSet xmlDS, string xmlFile)
            {
                MemoryStream stream = null;
                XmlTextWriter writer = null;

                try
                {
                    stream = new MemoryStream();
                    //從stream裝載到XmlTextReader
                    writer = new XmlTextWriter(stream, Encoding.Unicode);

                    //用WriteXml方法寫入文件.
                    xmlDS.WriteXml(writer);
                    int count = (int)stream.Length;
                    byte[] arr = new byte[count];
                    stream.Seek(0, SeekOrigin.Begin);
                    stream.Read(arr, 0, count);

                    //返回Unicode編碼的文本
                    UnicodeEncoding utf = new UnicodeEncoding();
                    StreamWriter sw = new StreamWriter(xmlFile);
                    sw.WriteLine("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
                    sw.WriteLine(utf.GetString(arr).Trim());
                    sw.Close();
                }
                catch (System.Exception ex)
                {
                    throw ex;
                }
                finally
                {
                    if (writer != null) writer.Close();
                }
            }

到此這篇關(guān)于C#實現(xiàn)XML文件與DataTable、Dataset互轉(zhuǎn)的文章就介紹到這了。希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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