C#操作XMl文件(2):使用XmlReader和XmlWriter实现读取和写入

这次使用操作Xml较为常用的方法:使用XMlreader和Xmlwriter

1:读取xml文件的数学和元素

XmlReaderSettings settings = new XmlReaderSettings();
settings.IgnoreComments = true;
settings.IgnoreWhitespace = true;

        XmlReader reader = XmlReader.Create("Customer2.xml", settings);        List lists = new List();        CustomerInfo cust = null;        while (reader.Read())        {            if (reader.NodeType == XmlNodeType.Element)            {                switch (reader.Name)                {                    case "row":                        cust = new CustomerInfo();                        if (reader.HasAttributes)                        {                            cust.AppId = reader.GetAttribute("AppID");                            cust.Version = reader.GetAttribute("Version");                        }                        break;                    case "CustomerID":                        cust.CustomerID = reader.ReadString();                        break;                    case "CompanyName":                        cust.CompanyName = reader.ReadString();                        break;                    case "ContactName":                        cust.ContactName = reader.ReadString();                        break;                    case "ContactTitle":                        cust.ContactTitle = reader.ReadString();                        break;                    case "Address":                        cust.Address = reader.ReadString();                        break;                    case "City":                        cust.City = reader.ReadString();                        break;                    case "PostalCode":                        cust.PostalCode = reader.ReadString();                        break;                    case "Country":                        cust.Country = reader.ReadString();                        break;                    case "Phone":                        cust.Phone = reader.ReadString();                        break;                    case "Fax":                        cust.Fax = reader.ReadString();                        lists.Add(cust);                        break;                    default:                        break;                }            }        }

2.创建文档-属性和元素
XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
settings.NewLineOnAttributes = false;
XmlWriter writer = XmlWriter.Create("CustomerNewElementArribute.xml", settings);
writer.WriteStartDocument();
writer.WriteStartElement("Table");

        for (int i = 1; i < 10; i++)        {            writer.WriteStartElement("row");            writer.WriteAttributeString("Version", "2.0");            writer.WriteAttributeString("AppID", "111");            writer.WriteElementString("CustomerID", "cmz" + i.ToString());            writer.WriteElementString("CompanyName", "程沐喆" + i.ToString());            writer.WriteElementString("ContactName", "Maria Anders" + i.ToString());            writer.WriteElementString("ContactTitle", "Sales Representative" + i.ToString());            writer.WriteElementString("Address", "Obere Str. 57" + i.ToString());            writer.WriteElementString("City", "Berlin");            writer.WriteElementString("PostalCode", "12209");            writer.WriteElementString("Country", "Germany");            writer.WriteElementString("Phone", "030-0074321");            writer.WriteElementString("Fax", "030-0076545");            writer.WriteEndElement();        }        writer.WriteEndElement();        writer.WriteEndDocument();        writer.Flush();        writer.Close();    }    private void button7_Click(object sender, EventArgs e)    {        XmlWriterSettings settings = new XmlWriterSettings();        settings.Indent = true;        settings.NewLineOnAttributes = false;        settings.Encoding = Encoding.UTF8;        StringBuilder builder = new StringBuilder();        XmlWriter writer = XmlWriter.Create(builder, settings);        writer.WriteStartDocument();        writer.WriteStartElement("Table");        for (int i = 1; i < 5; i++)        {            writer.WriteStartElement("row");            writer.WriteAttributeString("Version", "2.0");            writer.WriteAttributeString("AppID", "111");            writer.WriteElementString("CustomerID", "cmz" + i.ToString());            writer.WriteElementString("CompanyName", "程沐喆" + i.ToString());            writer.WriteElementString("ContactName", "Maria Anders" + i.ToString());            writer.WriteElementString("ContactTitle", "Sales Representative" + i.ToString());            writer.WriteElementString("Address", "Obere Str. 57" + i.ToString());            writer.WriteElementString("City", "Berlin");            writer.WriteElementString("PostalCode", "12209");            writer.WriteElementString("Country", "Germany");            writer.WriteElementString("Phone", "030-0074321");            writer.WriteElementString("Fax", "030-0076545");            writer.WriteEndElement();        }        writer.WriteEndElement();        writer.WriteEndDocument();        writer.Flush();        writer.Close();

另外在介绍自己学习的使用xmlwriter写入StringBuiler和Stream

创建xml写入StringBuiler:

XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
settings.NewLineOnAttributes = false;
settings.Encoding = Encoding.UTF8;
StringBuilder builder = new StringBuilder();
XmlWriter writer = XmlWriter.Create(builder, settings);
writer.WriteStartDocument();
writer.WriteStartElement("Table");

        for (int i = 1; i < 5; i++)        {            writer.WriteStartElement("row");            writer.WriteAttributeString("Version", "2.0");            writer.WriteAttributeString("AppID", "111");            writer.WriteElementString("CustomerID", "ALFKI" + i.ToString());            writer.WriteElementString("CompanyName", "Alfreds Futterkiste" + i.ToString());            writer.WriteElementString("ContactName", "Maria Anders" + i.ToString());            writer.WriteElementString("ContactTitle", "Sales Representative" + i.ToString());            writer.WriteElementString("Address", "Obere Str. 57" + i.ToString());            writer.WriteElementString("City", "Berlin");            writer.WriteElementString("PostalCode", "12209");            writer.WriteElementString("Country", "Germany");            writer.WriteElementString("Phone", "030-0074321");            writer.WriteElementString("Fax", "030-0076545");            writer.WriteEndElement();        }        writer.WriteEndElement();        writer.WriteEndDocument();        writer.Flush();        writer.Close();

创建xml写入stream:
XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
settings.NewLineOnAttributes = false;
settings.Encoding = new UTF8Encoding(false);
MemoryStream stream = new MemoryStream();
XmlWriter writer = XmlWriter.Create(stream, settings);
writer.WriteStartDocument();
writer.WriteStartElement("Table");

        for (int i = 1; i < 5; i++)        {            writer.WriteStartElement("row");            writer.WriteAttributeString("Version", "2.0");            writer.WriteAttributeString("AppID", "111");            writer.WriteElementString("CustomerID", "ALFKI" + i.ToString());            writer.WriteElementString("CompanyName", "Alfreds Futterkiste" + i.ToString());            writer.WriteElementString("ContactName", "Maria Anders" + i.ToString());            writer.WriteElementString("ContactTitle", "Sales Representative" + i.ToString());            writer.WriteElementString("Address", "Obere Str. 57" + i.ToString());            writer.WriteElementString("City", "Berlin");            writer.WriteElementString("PostalCode", "12209");            writer.WriteElementString("Country", "Germany");            writer.WriteElementString("Phone", "030-0074321");            writer.WriteElementString("Fax", "030-0076545");            writer.WriteEndElement();        }        writer.WriteEndElement();        writer.WriteEndDocument();        writer.Flush();        writer.Close();