//change struct to bytes and change struct from bytes
int _SetParamToByte(int nIndex, ref COLUMN_PARAM pParam)
{
int nStructLen = Marshal.SizeOf(pParam);
int nPos = nIndex * nStructLen + Marshal.SizeOf(typeof(TABLE_PARAM));
IntPtr pStructPtr = Marshal.AllocHGlobal(nStructLen);
Marshal.StructureToPtr(pParam, pStructPtr, false);
Marshal.Copy(pStructPtr, m_pData, nPos, nStructLen);
Marshal.FreeHGlobal(pStructPtr);
return(0);
}
int _GetParamFromByte(int nIndex, ref COLUMN_PARAM pParam)
{
int nStructLen = Marshal.SizeOf(pParam);
int nPos = nIndex * nStructLen + Marshal.SizeOf(typeof(TABLE_PARAM));
IntPtr pStructPtr = Marshal.AllocHGlobal(nStructLen);
Marshal.Copy(m_pData, nPos, pStructPtr, nStructLen);
pParam = (COLUMN_PARAM)Marshal.PtrToStructure(pStructPtr, pParam.GetType());
Marshal.FreeHGlobal(pStructPtr);
return(0);
}
