XmlReader 读取器读取内存流 MemoryStream 的注意事项
内容导读
互联网集市收集整理的这篇技术教程文章主要介绍了XmlReader 读取器读取内存流 MemoryStream 的注意事项,小编现在分享给大家,供广大互联网技能从业者学习和参考。文章包含5294字,纯文字阅读大概需要8分钟。
内容图文
![XmlReader 读取器读取内存流 MemoryStream 的注意事项](/upload/InfoBanner/zyjiaocheng/382/4b5e8ac7856846349126c06dc02ee8a3.jpg)
使用MemoryStream和XmlTextWriter进行书写XML,需要注意两点:XmlTextWriter.Flush操作和重设MemoryStream.Position = 0。
C#
<%@ Page Language="C#"%>
<%@ Import Namespace="System.Xml" %>
<%@ Import Namespace="System.IO" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void Button1_Click(object sender, EventArgs e)
{
Response.Clear();
Response.ContentType = "text/xml";
MemoryStream msXml = new MemoryStream();
XmlTextWriter xmlWriter = new XmlTextWriter(msXml, Encoding.UTF8);
xmlWriter.WriteStartElement("rss");
xmlWriter.WriteAttributeString("version", "2.0");
xmlWriter.WriteStartElement("channel");
xmlWriter.WriteElementString("title", "【孟宪会之精彩世界】");
xmlWriter.WriteElementString("link", "http://dotnet.aspx.cc/Rss.aspx");
xmlWriter.WriteElementString("description", "NET开发技术。");
xmlWriter.WriteElementString("language", "zh-CN");
xmlWriter.WriteElementString("copyright", "Copyright 1999-2007【孟宪会之精彩世界】");
xmlWriter.WriteElementString("managingEditor", "amxh[AT]21cn.com");
xmlWriter.WriteStartElement("image");
xmlWriter.WriteElementString("title", "【孟宪会之精彩世界】");
xmlWriter.WriteElementString("width", "144");
xmlWriter.WriteElementString("height", "35");
xmlWriter.WriteElementString("link", "http://dotnet.aspx.cc/");
xmlWriter.WriteElementString("url", "http://dotnet.aspx.cc/Images/LogoRss.gif");
xmlWriter.WriteEndElement();
//循环读出数据库内容列表,忽略
//while (objReader.Read())
//{
// xmlWriter.WriteStartElement("item");
// xmlWriter.WriteElementString("title", objReader.GetString(0));
// xmlWriter.WriteElementString("description", objReader.GetString(1));
// xmlWriter.WriteElementString("link", "http://dotnet.aspx.cc/article/a933b187-06c3-4263-9eec-414a54d9c815/read.aspx");
// xmlWriter.WriteElementString("pubDate", objReader.GetDateTime(3).ToString("G"));
// xmlWriter.WriteEndElement();
//}
//objReader.Close();
xmlWriter.WriteStartElement("item");
xmlWriter.WriteElementString("title", "ASP.NET 2.0中直接将Access数据库导入到Excel文件中");
xmlWriter.WriteElementString("description", "ASP.NET 2.0中直接将Access数据库导入到Excel文件中");
xmlWriter.WriteElementString("link", "http://dotnet.aspx.cc/article/a933b187-06c3-4263-9eec-414a54d9c815/read.aspx");
xmlWriter.WriteElementString("pubDate", "Sat, 02 Dec 2006 09:39:58 GMT");
xmlWriter.WriteEndElement();
xmlWriter.WriteEndElement();
xmlWriter.WriteEndElement();
xmlWriter.Flush(); // 确保书写器更新到Stream中;
msXml.Position = 0; // 重置流的位置,以便我们可以从头读取
XmlReader xmlReader = XmlReader.Create(msXml);
while (xmlReader.Read())
{
if (xmlReader.Name == "rss")
{
Response.Write(xmlReader.ReadOuterXml());
}
}
Response.End();
msXml.Close();
xmlWriter.Close();
xmlReader.Close();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>XmlReader 读取器读取内存流 MemoryStream 的注意事项</title>
</head>
<body>
<form id="form1" runat="server">
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="读取数据" />
</form>
</body>
</html>
VB.NET
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs)
Response.Clear
Response.ContentType = "text/xml"
Dim msXml As MemoryStream = New MemoryStream
Dim xmlWriter As XmlTextWriter = New XmlTextWriter(msXml, Encoding.UTF8)
xmlWriter.WriteStartElement("rss")
xmlWriter.WriteAttributeString("version", "2.0")
xmlWriter.WriteStartElement("channel")
xmlWriter.WriteElementString("title", "【孟宪会之精彩世界】")
xmlWriter.WriteElementString("link", "http://dotnet.aspx.cc/Rss.aspx")
xmlWriter.WriteElementString("description", "NET开发技术。")
xmlWriter.WriteElementString("language", "zh-CN")
xmlWriter.WriteElementString("copyright", "Copyright 1999-2007【孟宪会之精彩世界】")
xmlWriter.WriteElementString("managingEditor", "amxh[AT]21cn.com")
xmlWriter.WriteStartElement("image")
xmlWriter.WriteElementString("title", "【孟宪会之精彩世界】")
xmlWriter.WriteElementString("width", "144")
xmlWriter.WriteElementString("height", "35")
xmlWriter.WriteElementString("link", "http://dotnet.aspx.cc/")
xmlWriter.WriteElementString("url", "http://dotnet.aspx.cc/Images/LogoRss.gif")
xmlWriter.WriteEndElement
xmlWriter.WriteStartElement("item")
xmlWriter.WriteElementString("title", "ASP.NET 2.0中直接将Access数据库导入到Excel文件中")
xmlWriter.WriteElementString("description", "ASP.NET 2.0中直接将Access数据库导入到Excel文件中")
xmlWriter.WriteElementString("link", "http://dotnet.aspx.cc/article/a933b187-06c3-4263-9eec-414a54d9c815/read.aspx")
xmlWriter.WriteElementString("pubDate", "Sat, 02 Dec 2006 09:39:58 GMT")
xmlWriter.WriteEndElement
xmlWriter.WriteEndElement
xmlWriter.WriteEndElement
xmlWriter.Flush
msXml.Position = 0
Dim xmlReader As XmlReader = XmlReader.Create(msXml)
While xmlReader.Read
If xmlReader.Name = "rss" Then
Response.Write(xmlReader.ReadOuterXml)
End If
End While
Response.End
msXml.Close
xmlWriter.Close
xmlReader.Close
End Sub
内容总结
以上是互联网集市为您收集整理的XmlReader 读取器读取内存流 MemoryStream 的注意事项全部内容,希望文章能够帮你解决XmlReader 读取器读取内存流 MemoryStream 的注意事项所遇到的程序开发问题。 如果觉得互联网集市技术教程内容还不错,欢迎将互联网集市网站推荐给程序员好友。
内容备注
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 gblab@vip.qq.com 举报,一经查实,本站将立刻删除。
内容手机端
扫描二维码推送至手机访问。
来源:【匿名】