用list的方法来完成在一个数型结构的文件夹中,可能在拷贝时中间出现了差错,希望有一段代码来比较两个文件夹中的异同数目有多少.

主要用到的方法是:

1:

System.IO.DirectoryInfo.GetFiles("*.*", System.IO.SearchOption.AllDirectories);

返回当前目录的文件列表。

2:

List.Intersect(List);

找出兩陣列相同的項目.

3:

List.Except(List);

找出兩陣列不相同的項目-Except

新建一个ErrorFrom.cs  From

代码如下:

public partial class ErrorFrom : Form    {        public ErrorFrom(List
     
       errorList)        {            InitializeComponent();            if (errorList != null)            {                foreach (string str in errorList)                    lstError.AppendText(str);            }        }        public ErrorFrom()        {            InitializeComponent();        }    }
     

图片如下:

新建一个MessageFrom.cs  From,代码如下:

public partial class MessageFrom : Form    {        public MessageFrom()        {            InitializeComponent();        }        public MessageFrom(List
     
       MessageList)        {            InitializeComponent();            if (MessageList != null)            {                foreach (string str in MessageList)                    lstMessage.AppendText(str);            }        }    }
     

界面如下:

新加一个CompareFolder.cs From,代码如下:

下面正式看代码:

public partial class CompareFolder : Form    {        public CompareFolder()        {            InitializeComponent();            txtFolderOne.ReadOnly = true;            txtFolderTwo.ReadOnly = true;        }        /// 
        ///         /// 
        ///         private void HandleError(List
     
       errorList)        {            if (errorList != null && errorList.Count > 0)            {                ErrorFrom errorForm = new ErrorFrom(errorList);                errorForm.Show();            }        }        /// 
      
        ///         /// 
        /// 
              private void HandleMessage(List
      
        messageList)        {            if (messageList != null && messageList.Count > 0)            {                MessageFrom messageForm = new MessageFrom(messageList);                messageForm.Show();            }        }        public List
       
         ErrorList = new List
        
         ();        public List
         
           MessageList = new List
          
           (); private void btnFolderOne_Click(object sender, EventArgs e) { folderBrowserDialog1.ShowDialog(); txtFolderOne.Text = folderBrowserDialog1.SelectedPath; } private void btnFolderTwo_Click(object sender, EventArgs e) { folderBrowserDialog1.ShowDialog(); txtFolderTwo.Text = folderBrowserDialog1.SelectedPath; } private void btnRun_Click(object sender, EventArgs e) { if (string.IsNullOrEmpty(txtFolderOne.Text)) { ErrorList.Add("Please Select folder one."); HandleError(ErrorList); return; } if (string.IsNullOrEmpty(txtFolderTwo.Text)) { ErrorList.Add("Please Select folder two."); HandleError(ErrorList); return; } CompareSubDirectory(txtFolderOne.Text, txtFolderTwo.Text); HandleMessage(MessageList); HandleError(ErrorList); } private void CompareSubDirectory(string urlone, string urltwo) { string pathA =urlone; string pathB = urltwo; System.IO.DirectoryInfo dir1 = new System.IO.DirectoryInfo(pathA); System.IO.DirectoryInfo dir2 = new System.IO.DirectoryInfo(pathB); //find All Files. IEnumerable
           
             list1 = dir1.GetFiles("*.*", System.IO.SearchOption.AllDirectories); IEnumerable
            
              list2 = dir2.GetFiles("*.*", System.IO.SearchOption.AllDirectories); List
             
               filelistone = new List
              
               (); List
               
                 filelisttwo = new List
                
                 (); //To List with Relative Path. foreach (System.IO.FileInfo files in list1) { string filepathone = files.DirectoryName.Replace(pathA, "") + "\\" + files.Name; filelistone.Add(filepathone); } //To List with Relative Path. foreach (System.IO.FileInfo files in list2) { string filepathtwo = files.DirectoryName.Replace(pathB, "") + "\\" + files.Name; filelisttwo.Add(filepathtwo); } //check Is Same bool areIdentical = filelistone.SequenceEqual(filelisttwo); if (areIdentical == true) { MessageList.Add("the two folders are the same.\n"); } else { ErrorList.Add("The two folders are not the same.\n"); } //Find Same var queryCommonFiles = filelistone.Intersect(filelisttwo); if (queryCommonFiles.Count() > 0) { MessageList.Add("The following files are in both folders:\n"); foreach (var v in queryCommonFiles) { MessageList.Add(v + "\n"); } } else { ErrorList.Add("There are no common files in the two folders.\n"); } // Find not Same. var queryList1Only = (from file in filelistone select file).Except(filelisttwo); ErrorList.Add("The following files are in list1 but not list2:\n"); foreach (var v in queryList1Only) { ErrorList.Add(v + "\n"); } var querylist2Only = (from file in filelisttwo select file).Except(filelistone); ErrorList.Add("The following files are in list2 but not list1:\n"); foreach (var v in querylist2Only) { ErrorList.Add(v+"\n"); } }
                
               
              
             
            
           
          
         
        
       
      
     

界面如下:

欢迎拍砖.