Question

我正试图将一项统一的XML数据归为等级夹。

如下文所示代码。我正试图找到以下办法:

How can I change the synatx for Console.WriteLine(" {0}, f.Element("FILE_NAME").Value); to something like f.FileName in the inner foreach statement.
Is there anything else I can do to make it more efficient and/or readable?

我目前正在4年左右,但想想到的是,新版本的新特点使这种信条变得更形。

成就

法典:

using System;
using System.Linq;
using System.Xml.Linq;

namespace TestingStuff
{
    class LinqQuestion
    {
        static void Main(string[] args)
        {
            Question();

            #region End Console
            Console.WriteLine();
            Console.WriteLine();
            Console.WriteLine("*".PadRight(30,  * ));
            Console.WriteLine("Done");

#if DEBUG
            {
                Console.WriteLine("Press any key to exit.");
                Console.WriteLine("Where is the any key?  --Homer Simpson");
                Console.ReadKey(true);
            }
#endif
            #endregion
        }

        private static void Question()
        {
            int count = 0;
            XDocument xmlDoc = XDocument.Parse(
                @"<ROWSET>
                    <ROW>
                      <PARENT_DIR>Parent_100</PARENT_DIR>
                      <DIR>Folder_110</DIR>
                      <FILE_NAME>File_111</FILE_NAME>
                    </ROW>
                    <ROW>
                      <PARENT_DIR>Parent_100</PARENT_DIR>
                      <DIR>Folder_110</DIR>
                      <FILE_NAME>File_112</FILE_NAME>
                    </ROW>
                    <ROW>
                      <PARENT_DIR>Parent_200</PARENT_DIR>
                      <DIR>Folder_210</DIR>
                      <FILE_NAME>File_211</FILE_NAME>
                    </ROW>
                    <ROW>
                      <PARENT_DIR>Parent_200</PARENT_DIR>
                      <DIR>Folder_220</DIR>
                      <FILE_NAME>File_221</FILE_NAME>
                    </ROW>
                  </ROWSET>");


            var rows = from d in xmlDoc.Descendants("ROW")
                       group d by new
                       {   
                           ParentDir = d.Element("PARENT_DIR").Value,
                           Dir = d.Element("DIR").Value
                       }
                       ;
            foreach (var myRow in rows)
            {

                /* 
                 * Create Folders
                 * Folder: PARENT_DIRDIRFILE_NAME
                 * 
                 */
                try
                {

                    string[] folders = new string[] { myRow.Key.ParentDir, myRow.Key.Dir };
                    string newFolder = String.Join("\", folders);

                    count++;

                    Console.WriteLine("{0}	{1}", count, newFolder);

                    foreach (var f in myRow)
                    {
                        Console.WriteLine("		{0}", f.Element("FILE_NAME").Value);
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine("Error in Copy Process:");
                    // Specify the XML details for failed file / row
                    Console.WriteLine(ex.Message);
                }

            }
            Console.WriteLine();
            Console.WriteLine("Total Count: {0}", count);
            Console.WriteLine();
            Console.WriteLine();
        }
    }
}

Answer 1

依据不同的在SO,我设法获得我所需要的东西。

修改《林克法典》(只有主要部分是书面的)

    var expr = from d in xmlDoc.Descendants("ROW")
                        group d by new
                        {
                           ParentDir = d.Element("PARENT_DIR").Value,
                           Dir = d.Element("DIR").Value,

                        } into gDir
                        select new
                        {
                           GroupKey = gDir.Key,
                           Data = from z in gDir
                                  select new { FileName = z.Element("FILE_NAME").Value }

                        };

foreach (var g in expr)
{
   Console.WriteLine("{0}		", g.GroupKey.ParentDir, g.GroupKey.Dir);

   foreach (var n in g.Data)
               Console.WriteLine("		{0}", n.FileName);
}

友情链接