.NET平台下读取文件编码为BASE64 (C#语言实现)

    编程中有时候需要把2进制文件作为文本来处理, 下面的代码实现直接读取一个2进制文件，保存为BASE64格式的文本

        /// <summary>
        /// 读取文件编码为BASE64
        /// </summary>
        /// <param name="FilePathX">需要转换的文件路径</param>
        public String EncodeWithString(String FilePathX)
        {
            System.IO.FileStream inFile;
            byte[] binaryData;

            try
            {
                inFile = new System.IO.FileStream(FilePathX,
                                                  System.IO.FileMode.Open,
                                                  System.IO.FileAccess.Read);

                binaryData = new Byte[inFile.Length];

                long bytesRead = inFile.Read(binaryData, 0,
                                            (int)inFile.Length);
                inFile.Close();
            }
            catch (System.Exception exp)
            {
                // Error creating stream or reading from it.
                System.Console.WriteLine("{0}", exp.Message);
                return "Error";
            }

            // Convert the binary input into Base64 UUEncoded output.
            string base64String;
            try
            {
                base64String =
                   System.Convert.ToBase64String(binaryData,
                                                 0,
                                                 binaryData.Length);
                return base64String;
            }
            catch (System.ArgumentNullException)
            {
                System.Console.WriteLine("Binary data array is null.");
                return "Error";
            }

        }

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