BinaryWrite two empty unicode characters after a string

Question

so i am trying to add two of 0x00 after every string i write in a binary file, these are what i tried(1 try per line), but i always end up having only one 0x00 after each string:

bw.Write(enc.GetBytes(listView1.Items[i].SubItems[1].Text + '\0' + '\0'));
bw.Write(enc.GetBytes(listView1.Items[i].SubItems[1].Text + "\0"));
bw.Write(enc.GetBytes(listView1.Items[i].SubItems[1].Text + (new string('\0', 2))));

but they all end up with the same result, is there another Unicode escape i can try to use ? or am i doing anything wrong in these lines ? and for an aside note, String enc = Encoding.Unicode

Focus on the code that reads this file. It is bound to ignore the extra zeros, it is pretty common for such code to assume C string semantics. Where a single 0 terminates the string. Particularly so since such code could not use any other way to find out how many characters are in the string. Use a hex viewer to gain confidence in your code. — Hans Passant
– Hans Passant, Commented Jul 23, 2013 at 10:50

Matthew Watson · Accepted Answer · 2013-07-23 10:38:31Z

1

What you are doing should work. This test code demonstrates:

string test = "X" + '\0' + '\0';
Console.WriteLine(test.Length); // Prints 3
var bytes = Encoding.Unicode.GetBytes(test);
Console.WriteLine(bytes.Length); // Prints 6

bytes contains the following byte values: 88, 0, 0, 0, 0, 0 - which is correct.

So I assume there's something wrong elsewhere with your code.

answered Jul 23, 2013 at 10:38

Matthew Watson

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1 Comment

Omarrrio Over a year ago

Yes, you are right, thank you, i know now where i was wrong, i don't really know how this works in SOF, so ill just post your answer and the Answer, thank you :)

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