CryptographicBuffer.ConvertStringToBinary | convertStringToBinary method

var iBuffer = Windows.Security.Cryptography.CryptographicBuffer.convertStringToBinary(value, encoding);

public void ConvertData()
{
    // Create a string to convert.
    String strIn = "Input String";

    // Convert the string to UTF16BE binary data.
    IBuffer buffUTF16BE = CryptographicBuffer.ConvertStringToBinary(strIn, BinaryStringEncoding.Utf16BE);

    // Convert the string to UTF16LE binary data.
    IBuffer buffUTF16LE = CryptographicBuffer.ConvertStringToBinary(strIn, BinaryStringEncoding.Utf16LE);

    // Convert the string to UTF8 binary data.
    IBuffer buffUTF8 = CryptographicBuffer.ConvertStringToBinary(strIn, BinaryStringEncoding.Utf8);
}