>Is there an easy way to convert from a byte array to integer? Is there an equaly easy way to convert from integer to a byte array?
>
>Currently what I do for a byte array of length 2:
>

>System.Int32 iValue = 42000;
>System.Byte[] bValue = new System.Byte[2];
>
>bValue[0] = Convert.ToByte(iValue/256);
>bValue[1] = Convert.ToByte(iValue%256);
>
>System.Int32 iRetVal;
>iRetVal = Convert.ToInt32(Convert.ToInt32(bValue[0]) * 256 + Convert.ToInt32(bValue[1]));
>

>
>Now this isn't a lot of work for byte[2] but it will get kinda messy for byte[4]. I have got it working for byte[4], but I was wondering if there was a simpler/built in (one-liner) way of doing this.
>
>Any help would be appreciated.
>
>Thanks,
>Einar

Einar,
Use BitConverter class as Zakaria pointed:

using System;
class quickTest
{
   static void Main() {

   System.Int64 paraInt64 = 4294967295;
   System.Int32 iValue = 42000;
   
   System.Byte[] bValue1 = BitConverter.GetBytes(iValue);
   System.Byte[] bValue2 = BitConverter.GetBytes(paraInt64);

   Console.WriteLine("Int sizes {0} and {1}",bValue1.Length,bValue2.Length);

   int iRetVal1 = BitConverter.ToInt32(bValue1,0);
   long iRetVal2 = BitConverter.ToInt64(bValue2,0);

   Console.WriteLine("Values back: {0} and {1}",iRetVal1,iRetVal2);
}}

Cetin