c# - Merging two lines of code into one -

byte[] p = asciiencoding.ascii.getbytes(password);  byte[] p = new byte[8] 

i need define size of array , keep first line of code @ same time. error when write them both, because p array defined twice. how can this?

this code whole

public string hasher(string password, string id)     {         try         {              byte[] p = asciiencoding.ascii.getbytes(password);             byte[] a6 = asciiencoding.ascii.getbytes(id);              byte totvector = 0;              (int = 0; < 8; i++)             {                 totvector = (byte)(totvector + p[i]);             }              byte[] a_concat = new byte[2];             a_concat[0] = (byte)((p[6] * totvector) % 256);             a_concat[1] = (byte)((p[7] * totvector) % 256);              byte[] = new byte[8];             (int = 0; < 6; i++)             {                 a[i] = a6[i];             }             a[6] = a_concat[0];             a[7] = a_concat[1];              byte[] h = new byte[8];             string hasheduserpassword = "";              (int = 0; < 8; i++)             {                 if (i == 0 || == 2) h[i] = (byte)((p[i] << 1) ^ a[i]);                 else if (i == 3 || == 5) h[i] = (byte)((p[i] >> 2) ^ a[i]);                 else h[i] = (byte)(p[i] ^ a[i]);                  hasheduserpassword += h[i].tostring("x2");             }              return hasheduserpassword;         }         catch         {             return "error";         }       } 

the primary problem right here:

        (int = 0; < 8; i++)         {             totvector = (byte)(totvector + p[i]);         } 

the easiest fix not try 8 iterations if array doesn't have many items. calculate length first:

int len = math.min(p.length, 8);  // limit no more length (int = 0; < len; i++) {     totvector = (byte)(totvector + p[i]); }