將TreeView中匯出為XML資料

最後更新：2018-12-06 來源：互聯網

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//使用範例：
TreeViewToXmlB m_TreeViewToXmlB = new TreeViewToXmlB();
m_TreeViewToXmlB.exportToXml(this.TreeView1,Server.MapPath(@".\xml.xml"));

====================================================

using System;
using Microsoft.Web.UI.WebControls;
using System.Collections;
using System.IO;
//using System.Windows.Forms;

namespace treeview_DB
{
/// <summary>
/// 將TreeView中匯出為XML資料
/// </summary>
public class TreeViewToXmlB
{
  //XML每行的內容
  private string xmlLine = "";
  //用於寫XML檔案
  private StreamWriter sr;

  //// <summary>
  /// 建構函式
  /// </summary>
  public TreeViewToXmlB()
  {

  }

  /// <summary>
  /// 將TreeView中匯出為XML資料
  /// </summary>
  /// <param name="tv">TreeView控制項</param>
  /// <param name="filename">XML檔案的儲存路徑</param>
  public void exportToXml(TreeView tv, string filename)
  {
   sr = new StreamWriter(filename, false, System.Text.Encoding.UTF8);
   //寫檔案頭部內容
   //下面是產生RSS的OPML檔案
   sr.WriteLine("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
   sr.WriteLine("<opml version=\"1.0\">");
   sr.WriteLine("<head>");
   sr.WriteLine("<title>RSS</title>");
   sr.WriteLine("</head>");
   sr.WriteLine("<body>");

   //遍曆根節點
   foreach (TreeNode node in tv.Nodes)
   {
    if (node.Nodes.Count == 0)
    {
     xmlLine = GetRSSText(node);
    }
    else
    {
     xmlLine = GetDirectoryText(node);
    }

sr.WriteLine(xmlLine);

    //遞迴遍曆節點
    parseNode(node);
   }

   //寫檔案尾部內容
   sr.WriteLine("</body>");
   sr.WriteLine("</opml>");
   sr.Close();
  }

  //遞迴遍曆節點內容,最關鍵的函數
  private void parseNode(TreeNode tn)
  {
   IEnumerator ie = tn.Nodes.GetEnumerator();

   while (ie.MoveNext())
   {
    TreeNode ctn = (TreeNode) ie.Current;

    //為最底層節點,即該節點為RSS節點
    if (ctn.Nodes.Count == 0)
    {
     xmlLine = GetRSSText(ctn);
     sr.WriteLine(xmlLine);
    }
    else//不是最底層節點,即該節點為目錄節點
    {
     xmlLine = GetDirectoryText(ctn);
     sr.WriteLine(xmlLine);
    }

    //如果還有子節點則繼續遍曆
    if (ctn.Nodes.Count > 0)
    {
     parseNode(ctn);
    }
   }

sr.WriteLine("</outline>");
}

  //成生RSS節點的XML文本行
  private string GetRSSText(TreeNode node)
  {
   //根據Node屬性產生XML文本
   string rssText = "<outline type=\"rss\" text=\"" + node.Text + "\" xmlUrl=\"URL\"/>";

return rssText;
}

  //成生目錄節點的XML文本行
  private string GetDirectoryText(TreeNode node)
  {
   //根據Node屬性產生XML文本
   string directoryText = "<outline text=\"" + node.Text + "\">";

return directoryText;
}
}
}

本文章原先以中文撰寫並發佈於 aliyun.com，亦設英文版本，僅作資訊用途。本網站不對文章的準確性，完整性或可靠性或其任何翻譯作出任何明示或暗示的陳述或保證。如對該文章有任何疑慮或投訴，請傳送電郵至 info-contact@alibabacloud.com 並提供相關疑慮或投訴的詳細說明。職員會於 5 個工作天內與您聯絡，一經驗證之後，即會刪除該侵權內容。

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將TreeView中匯出為XML資料

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