看
public class FileUtil { /// <summary> /// 文件转换成Base64字符串 /// </summary> /// <param name="fileName">文件绝对路径</param> /// <returns></returns> public static String FileToBase64(string fileName) { string strRet = string.Empty; try { using (FileStream fs = new FileStream(fileName, FileMode.Open)) { byte[] bt = new byte[fs.Length]; fs.Read(bt, 0, bt.Length); strRet = Convert.ToBase64String(bt); } } catch (Exception ex) { throw ex; } return strRet; } /// <summary> /// 文件转Base64 /// </summary> /// <param name="stream"></param> /// <param name="base64Str"></param> public static string FileToBase64(Stream stream) { using (BinaryReader binReader = new BinaryReader(stream)) { byte[] bytes = binReader.ReadBytes(Convert.ToInt32(stream.Length)); string base64Str = Convert.ToBase64String(bytes); return base64Str; } } /// <summary> /// Base64字符串转换成文件 /// </summary> /// <param name="strInput">base64字符串</param> /// <param name="fileName">保存文件的绝对路径</param> /// <returns></returns> public static bool Base64ToFileAndSave(string strInput, string fileName) { bool bTrue = false; try { byte[] buffer = Convert.FromBase64String(strInput); using (FileStream fs = new FileStream(fileName, FileMode.CreateNew)) { fs.Write(buffer, 0, buffer.Length); bTrue = true; } } catch (Exception ex) { throw ex; } return bTrue; } }
标签:文件,fs,string,FileStream,Base64,ex,new,net From: https://www.cnblogs.com/xsj1989/p/18529284