c#如何copy指定文件到目錄

Question

System.IO.File.Copy(@"C:\Text.txt", @"D:\text.txt", true);

Answer 1

   System.IO.DirectoryInfo _SourceDirect = new System.IO.DirectoryInfo(@"C:\A";);
            System.IO.DirectoryInfo _PurposeDirect = new System.IO.DirectoryInfo(@"C:\B");            System.IO.FileInfo[] _FileList =_SourceDirect.GetFiles();            for(int i=0;i!=_FileList.Length;i++)
            {
                if(_FileList[i].Name.ToUpper().IndexOf("Text")==0)  //条件你可以自己改
                {
                     System.IO.File.Copy(_FileList[i].FullName, _PurposeDirect+"\\"+_FileList[i].Name);
                }
           
            }

Answer 2

 public void CopyFile(string path, string newPath)
        {
            string[] files = Directory.GetFiles(path);
            for (int i = 0; i < files.Length; i++)
            {
                FileInfo fi = new FileInfo(files[i]);
                if (fi.Extension.ToLower() == ".text")
                {
                    File.Copy(fi.FullName, newPath + "\\" + fi.Name);
                }
            }
        }

Answer 3

System.IO.DirectoryInfo _SourceDirect = new System.IO.DirectoryInfo(@"C:\A";); 
            System.IO.DirectoryInfo _PurposeDirect = new System.IO.DirectoryInfo(@"C:\B");             System.IO.FileInfo[] _FileList =_SourceDirect.GetFiles();             for(int i=0;i!=_FileList.Length;i++) 
            { 
                if(_FileList[i].Name.ToUpper().IndexOf("Text")==0)  //条件你可以自己改 
                { 
                    System.IO.File.Copy(_FileList[i].FullName, _PurposeDirect+"\\"+_FileList[i].Name); 
                } 
          
            }