C#《学习代码片段》- 递归获取文件夹下所有文件

• 一、代码片段
• 二、使用用例
• 三、测试结果

       /// 

        /// 获取最终需要的文件夹路径字符串集合
        /// 
        /// 
        /// 
        private List getFiles(string folderName, bool useOnlyName = false)
        {
            List fileNameList = new List() { };
            DirectoryInfo theFolder = new DirectoryInfo(folderName);
            DirectoryInfo[] dirInfo = theFolder.GetDirectories();

            fileNameList = getFileList(dirInfo, fileNameList, useOnlyName);
            FileInfo[] fileInfo = theFolder.GetFiles();
            for (int i = 0; i < fileInfo.Length; i++)
            {
                if(useOnlyName)
                {
                    fileNameList.Add(fileInfo[i].Name);
                }
                else
                {
                    fileNameList.Add(fileInfo[i].FullName);
                }                
            }
            return fileNameList;
        }

        /// 

        /// 递归获取文件夹里的所有文件（包括子文件夹内的文件）
        /// 
        /// 
        /// 
        /// 
        private List getFileList(DirectoryInfo[] dirInfos, List fileNameList, bool useOnlyName = false)
        {
            foreach (DirectoryInfo sonFolder in dirInfos)
            {
                FileInfo[] fileInfo = sonFolder.GetFiles();
                for (int i = 0; i < fileInfo.Length; i++)
                {
                    if(useOnlyName)
                    {
                        fileNameList.Add(fileInfo[i].Name);
                    }
                    else
                    {
                        fileNameList.Add(fileInfo[i].FullName);
                    }
                    
                }
                if (sonFolder.GetDirectories() != null)
                {
                    getFileList(sonFolder.GetDirectories(), fileNameList, useOnlyName);
                }
            }
            return fileNameList;
        }

   }

//获取文件完整路径
List fileWithPath = getFiles("./Documents/Help/Pages");

//只获取文件名
List fileWithPath = getFiles("./Documents/Help/Pages", true);

获取完整路径：

获取文件名