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C # convert byte [] containing c-style string for string - NOT Encoding.GetString (byte [])

stupid me trying to convert a byte array received from an external source does not override my string control. (And yes, I know about Encoding.GetString(byte[]).

What I still have:

void myfunc()
{
    byte[] rawData = new byte[ 128 ];

    for( int i = 0; i < rawData.Length; ++i )
    {
        rawData[ i ] = 0;
    }

    rawData[ 0 ] = (byte)'H';
    rawData[ 1 ] = (byte)'e';
    rawData[ 2 ] = (byte)'l';
    rawData[ 3 ] = (byte)'l';
    rawData[ 4 ] = (byte)'o';


    string asString = Encoding.UTF8.GetString( rawData, 0, rawData.Length );

    string asRealString = Encoding.UTF8.GetString( rawData );
}

Both lines contain the Hello part, but also a lot \ 0 after - this is not what I expected. Exit the debugger: asRealString =

"Hello\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"

Is there any way that can create me a string like "Hello"?

I went, but all I had was Encoding.GetString(byte[])...

. ! C-Style. . , , , , , .., .

:

private static string convertCString( byte[] buffer, int maxLength, Encoding targetEncoding )
{
    int length = 0;
    int realMax = buffer.Length < maxLength ? buffer.Length : maxLength;

    for( 
         ; 0 != buffer[length] && length < realMax
         ; ++length )
    {}

    return targetEncoding.GetString( buffer, 0, length );
}
+5
7

0:

    int len = Array.IndexOf(rawData, (byte)0); // maybe some bounds check too
    string asString = Encoding.UTF8.GetString(rawData, 0, len);
+13

Try

Encoding.UTF8.GetString( rawData ).Trim();
+2

! C-Style. .

, , .

, :

struct CStruct
{
  [MarshalAs(UnmanagedType.ByValArray, SizeConst=128)]
  public byte[] data;
}

:

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
struct CStruct
{
  [MarshalAs(UnmanagedType.ByValTStr, SizeConst=128)]
  public string data;
}
+2

? , :

byte[] rawData = new byte[ 128 ];

for( int i = 0; i < rawData.Length; ++i )
{
    rawData[ i ] = 0;   // RIGHT HERE
}

128 , for . 5 . \0, , , GetString.

+1

string asString = Encoding.UTF8.GetString( rawData, 0, rawData.Length );

, rawData.Length, ?

0
new string(Array.ConvertAll(rawData, x => (char)x))

\0.

0
void myfunc()
{
    byte[] rawData = new byte[ 128 ];

    //CLR will initialize each elemnet in arry to the 0
    //for( int i = 0; i < rawData.Length; ++i )
    //{
    //    rawData[ i ] = 0;
    //}

    rawData[ 0 ] = (byte)'H';
    rawData[ 1 ] = (byte)'e';
    rawData[ 2 ] = (byte)'l';
    rawData[ 3 ] = (byte)'l';
    rawData[ 4 ] = (byte)'o';

    // you should know length of the received string (each IO read method return number of read bytes), if you don't know it you can try to search 0 as the EOS
    var receivedBytes = Array.IndexOf(rawData, 0);
    string asString = Encoding.ASCII.GetString( rawData, 0, receivedBytes );
}
0

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