problème pointeur avec C#

**khalil.ajmi** · 21/09/2012, 10h13

Bonjour à tous j'implémente cette fonction de copiage avec le code ci joint:

Code :

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 static unsafe void Copy(char* src, int srcIndex, char* dst, int dstIndex, int count)
        {
            if (src == null || srcIndex < 0 ||
                dst == null || dstIndex < 0 || count < 0)
            {
                throw new System.ArgumentException();
            }
 
            //byte[] src1 = System.Text.Encoding.Default.GetBytes(src);
            //byte[] dst1 = System.Text.Encoding.Default.GetBytes(dst);
 
            int srcLen = src.Length;
            int dstLen = dst.Length;
            if (srcLen - srcIndex < count || dstLen - dstIndex < count)
            {
                throw new System.ArgumentException();
            }
 
            // The following fixed statement pins the location of the src and dst objects
            // in memory so that they will not be moved by garbage collection.
            fixed (byte* pSrc = src, pDst = dst)
            {
                byte* ps = pSrc;
                byte* pd = pDst;
 
                // Loop over the count in blocks of 4 bytes, copying an integer (4 bytes) at a time:
                for (int i = 0; i < count / 4; i++)
                {
                    *((int*)pd) = *((int*)ps);
                    pd += 4;
                    ps += 4;
                }
 
                // Complete the copy by moving any bytes that weren't moved in blocks of 4:
                for (int i = 0; i < count % 4; i++)
                {
                    *pd = *ps;
                    pd++;
                    ps++;
                }
            }
        }