C#操作目录与文件的方法步骤

string activeDir = @"C:\myDir";
string newPath = System.IO.Path.Combine(activeDir, "mySubDirOne");

string activeDir = @"C:\myDir";
string newPath = System.IO.Path.Combine(activeDir, "mySubDirOne");
System.IO.Directory.CreateDirectory(newPath);

System.IO.DirectoryInfo di = new System.IO.DirectoryInfo(@"C:\myDirTwo\mySubDirThree");
di.Create();

string activeDir = @"C:\myDir";
            string newPath = System.IO.Path.Combine(activeDir, "mySubDirOne");
            System.IO.Directory.CreateDirectory(newPath);
            //创建一个空白文件
            string fileNameOne = DateTime.Now.ToString("yyyyMMddHHmmssffff")
                + ".txt";
            string filePathOne = System.IO.Path.Combine(newPath, fileNameOne);
            System.IO.File.Create(filePathOne);

//通过Combine合并目录
            //然后创建目录
            string activeDir = @"C:\myDir";
            string newPath = System.IO.Path.Combine(activeDir, "mySubDirOne");
            System.IO.Directory.CreateDirectory(newPath);
            //创建一个空白文件
            string fileNameOne = DateTime.Now.ToString("yyyyMMddHHmmssffff")
                + ".txt";
            string filePathOne = System.IO.Path.Combine(newPath, fileNameOne);
            System.IO.FileInfo fi = new System.IO.FileInfo(filePathOne);
            fi.Create();

//复制单个文件到指定目录
            string fileName = "test.txt";
            string sourcePath = @"C:\testDir\subTestDir";
            string targetPath = @"C:\testDir\subTestDirTwo";
            string sourceFile = System.IO.Path.Combine(sourcePath, fileName);
            string destFile = System.IO.Path.Combine(targetPath, fileName);
            if (!System.IO.Directory.Exists(targetPath))
                System.IO.Directory.CreateDirectory(targetPath);
            //如果已存在，参数为false时将报错，参数为true重写该文件
            //当copy方法为两个参数时，默认重写为false。
            System.IO.File.Copy(sourceFile, destFile, true);
            //以下为复制一个目录下所有文件到指定目录
            //如果复制有子目录的目录的所有文件，可以用递归或堆栈算法实现
            if (System.IO.Directory.Exists(sourcePath))
            {
                string[] files = System.IO.Directory.GetFiles(sourcePath);
                foreach (string s in files)
                {
                    //仅返回路径字符串的文件名及后缀
                    fileName = System.IO.Path.GetFileName(s);
                    destFile = System.IO.Path.Combine(targetPath, fileName);
                    System.IO.File.Copy(s, destFile, true);
                }
            }
        }

/*移动文件*/
            string sourceFile = @"C:\testDir\subTestDir\test.txt";
            string destFile = @"C:\testDir\subTestDirTwo\test.txt";
            //当目标文件存在时，抛出异常
            System.IO.File.Move(sourceFile, destFile);
            /*移动目录*/
            //移动目录将移动改目录的子目录和文件
            System.IO.Directory.Move(@"C:\testDir\subTestDirTwo\", @"C:\testDir\subTestDir");

//删除可写空目录
            //如果不为空抛出目录不为空异常
            try
            {
                System.IO.Directory.Delete(@"C:\testDir\subTestDir");
            }
            catch (System.IO.IOException e)
            {
                Console.WriteLine(e.Message);
            }
            //第二参数为false时，只能删除空目录，否则抛出不为空异常
            //第二参数为true时，删除目录，包括子目录和文件
            try
            {
                System.IO.Directory.Delete(@"C:\testDir\subTestDir", true);
            }
            catch(System.IO.IOException e)
            {
                Console.WriteLine(e.Message);
            }

System.IO.DirectoryInfo di = new System.IO.DirectoryInfo(@"C:\testDir\subTestDirTwo");
            try
            {
                //无参数删除空目录
                //当参数为false,可删除空目录;为true，删除目录，包括子目录和文件
                di.Delete(true);
            }
            catch (System.IO.IOException e)
            {
                Console.WriteLine(e.Message);
            }

try
                {
                    System.IO.File.Delete(@"C:\testDir\subTestDir\test.txt");
                }
                catch(System.IO.IOException e)
                {
                    Console.WriteLine(e.Message);
                }

System.IO.FileInfo fi = new System.IO.FileInfo(@"C:\testDir\subTestDir\test1.txt");
            try
            {
                fi.Delete();
            }
            catch(System.IO.IOException e)
            {
                Console.WriteLine(e.Message);
            }