UTF16字符串为普通文本

Question

I have one column in DB containing UTF16 string and I want to convert the UTF16 string into normal text.
How to achieve this in c# ?

For example :

Source : 0645 0631 062D 0628 0627 0020 0627 0644 0639 0627 0644 0645
Convert : مرحبا العالم

Answer 1

I presume that source is simply a string containing the byte values, as this is one thing not quite clear from your question.

You first need to turn that into a byte array. Of course you first need to remove the blanks.

// Initialize the byte array
string sourceNoBlanks = source.Replace(" ", "").Trim();
if ((sourceNoBlanks.Length % 2) > 0)
    throw new ArgumentException("The length of the source string must be a multiple of 2!");

byte[] sourceBytes = new byte[source.Length / 2];

// Then, create the bytes
for (int i = 0; i < sourceBytes.Length; i++)
{
    string byteString = sourceNoBlanks.Substring(i*2, 2);
    sourceBytes[i] = Byte.Parse(byteString, NumberStyles.HexNumber);
}

After that you can easily convert it to string:

string result = Encoding.UTF32.GetString(sourceBytes);

I suggest you read up on the UTF32 encoding to understand little/big endian encoding.