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base64 encoding Problems **SOLVED**
Hey all, heres a short description of what I do.
I have an xml document. Structure and size do not matter here.
Important, it is UTF-8 encoded.
So, what I do now is take that whole xmlDocument get the OuterXml of it, and do a base64encoding of the whole document.
That base64 String is now being put into another xmldocument.
Everything works fine, up till now,
but what I do next is to decode that data again, select the base64 data from the document and save it again. That works to, but if I now open the latest xml Document it is UTF-16 encoded all the sudden.
What am I doing wrong?
Heres my Source for encoding the data:
Code:
using System;
using System.Xml;
using System.IO;
using System.Text;
namespace base64EncodeData
{
/// <summary>
/// Summary description for Class1.
/// </summary>
class Class1
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main(string[] args)
{
StringBuilder myBuilder = new StringBuilder();
myBuilder.Append("<?xml version='1.0'?>");
myBuilder.Append("<root>");
myBuilder.Append("<data>");
myBuilder.Append("</data>");
myBuilder.Append("</root>");
StreamReader myReader = new StreamReader("test.xml");
string workingData = myReader.ReadToEnd();
myReader.Close();
byte[] encData_byte = new byte[workingData.Length];
encData_byte = System.Text.Encoding.Unicode.GetBytes(workingData);
string encodedData = Convert.ToBase64String(encData_byte);
XmlDocument myDoc = new XmlDocument();
myDoc.LoadXml(myBuilder.ToString());
myDoc.DocumentElement.SelectSingleNode("//data").InnerText = encodedData;
StreamWriter myWriter = new StreamWriter(Guid.NewGuid().ToString() + ".xml");
myWriter.Write(myDoc.DocumentElement.OuterXml);
myWriter.Flush();
myWriter.Close();
}
}
}
Heres my Source for decoding the data:
Code:
using System;
using System.Xml;
using System.IO;
namespace base64DecodeData
{
/// <summary>
/// Summary description for Class1.
/// </summary>
class Class1
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main(string[] args)
{
Console.WriteLine("Beginning of decoding");
Console.WriteLine("Load Document");
XmlDocument myDoc = new XmlDocument();
myDoc.Load(args[0]);
string data = myDoc.DocumentElement.SelectSingleNode("//data").InnerText.ToString();
Console.WriteLine("Decode Data");
System.Text.UTF8Encoding encoder = new System.Text.UTF8Encoding();
System.Text.Decoder utf8Decode = encoder.GetDecoder();
byte[] todecode_byte = Convert.FromBase64String(data);
int charCount = utf8Decode.GetCharCount(todecode_byte, 0, todecode_byte.Length);
char[] decoded_char = new char[charCount];
utf8Decode.GetChars(todecode_byte, 0, todecode_byte.Length, decoded_char, 0);
string result = new String(decoded_char);
Console.WriteLine("Save Document");
StreamWriter myWriter = new StreamWriter(Guid.NewGuid().ToString() + ".xml");
myWriter.Write(result);
myWriter.Flush();
myWriter.Close();
Console.WriteLine("End of Decoding");
}
}
}
Heres what my XmlDocument that I start with looks like in UltraEdit:
Code:
<?xml version="1.0"?>
<root>
<testdata>alottadata</testdata>
</root>
And here it is after doing the encoding-decoding process
Wheres my Error? Any help is appreciated
Thanks,
Stephan
