string filename = string.Empty;XmlDocument doc = new XmlDocument();doc.Load(stream);stream.Close...
FromBase64String是一个方法,用于将Base64编码的字符串转换为原始字符串。当使用FromBase64String方法时,如果输入的Base64字符串为空或无效,该方法将返回一个空字符串。 Base64是一种用于将二进制数据转换为ASCII字符的编码方式。它将3个字节的数据编码为4个ASCII字符,以便在传输或存储时更方便。Base64编码后的字符...
importjava.util.Base64;publicclassBase64Decoder{publicstaticStringfromBase64String(Stringbase64String){byte[]decodedBytes=Base64.getDecoder().decode(base64String);returnnewString(decodedBytes);}publicstaticvoidmain(String[]args){Stringbase64String="SGVsbG8gV29ybGQh";StringdecodedString=fromBase64String...
{try{string[] img_array = img_string.Split(',');byte[] arr = Convert.FromBase64String(img_array[1]);using(MemoryStream ms =newMemoryStream(arr)) { Bitmap bmp=newBitmap(ms);if(img_array[0].ToLower() =="data:image/jpeg;base64") { bmp.Save(file_name+".jpg"); }elseif(img_...
namespaceStringTurnToByte{classProgram{staticvoidMain(string[] args){stringa ="1234";byte[] newBytes1 = Convert.FromBase64String(a);//将指定的字符串(它将二进制数据编码为 Base64 数字)转换为等效的 8 位无符号整数数组。stringstr1 = System.Text.Encoding.Default.GetString(newBytes1);Console.Wr...
string s = Convert.ToBase64String(bytes); Console.WriteLine("The base 64 string:\n {0}\n", s); // Restore the byte array. byte[] newBytes = Convert.FromBase64String(s); Console.WriteLine("The restored byte array: "); Console.WriteLine(" {0}\n", BitConverter.ToStr...
语法 public static byte[] FromBase64String(string s )参数 s 类型：System..::.String String。返回值 类型：array<System..::.Byte>[]()[]等效于 s 的 8 位无符号整数数组。s 由基 64 数字、空白字符和尾随填充字符组成。从零开始以升序排列的以 64 为基的数字为大写字符“A”到“Z”...
byte[] arr = Convert.FromBase64String(img_array[1]);using (MemoryStream ms = new MemoryStream(arr)){ Bitmap bmp = new Bitmap(ms);if (img_array[0].ToLower() == "data:image/jpeg;base64"){ bmp.Save(file_name + ".jpg");} else if (img_array[0].ToLower() == "data:image/...
Converts the specified string, which encodes binary data as base-64 digits, to an equivalent 8-bit unsigned integer array.
Converts the specified string, which encodes binary data as base-64 digits, to an equivalent 8-bit unsigned integer array.