C# 拷贝文件夹（包含里面的所有文件）

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C# 拷贝文件夹（包含里面的所有文件）

思路：分2步：

1. 如果destDir不存在，创建它。

2. 遍历sourceDir里的所有文件，把所有文件都复制到destDir

/// <summary>        /// Copy one folder to a new folder. if destDir is not exists, then create it.        /// </summary>        /// <param name="sourceDir"></param>        /// <param name="destDir"></param>        private static void CopyFolder(string sourceDir, string destDir)        {            if (!Directory.Exists(destDir))            {                Directory.CreateDirectory(destDir);            }            try            {                string[] fileList = Directory.GetFiles(sourceDir, "*");                foreach (string f in fileList)                {                    // Remove path from the file name.                    string fName = f.Substring(sourceDir.Length + 1);                    // Use the Path.Combine method to safely append the file name to the path.                    // Will overwrite if the destination file already exists.                    File.Copy(Path.Combine(sourceDir, fName), Path.Combine(destDir, fName), true);                }            }            catch (DirectoryNotFoundException dirNotFound)            {                throw new DirectoryNotFoundException(dirNotFound.Message);            }        }

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