/// <summary>
/// Converts an IntPtr array of context arguments to an object array containing the resolved parameters the pointers point to.
/// </summary>
/// <remarks>
/// Parameters passed to functions have only an affinity for a certain data type, there is no underlying schema available
/// to force them into a certain type. Therefore the only types you will ever see as parameters are
/// DBNull.Value, Int64, Double, String or byte[] array.
/// </remarks>
/// <param name="nArgs">The number of arguments</param>
/// <param name="argsptr">A pointer to the array of arguments</param>
/// <returns>An object array of the arguments once they've been converted to .NET values</returns>
internal object[] ConvertParams(int nArgs, IntPtr argsptr)
{
object[] parms = new object[nArgs];
#if !PLATFORM_COMPACTFRAMEWORK
IntPtr[] argint = new IntPtr[nArgs];
#else
int[] argint = new int[nArgs];
#endif
Marshal.Copy(argsptr, argint, 0, nArgs);
for (int n = 0; n < nArgs; n++)
{
switch (_base.GetParamValueType((IntPtr)argint[n]))
{
case TypeAffinity.Null:
parms[n] = DBNull.Value;
break;
case TypeAffinity.Int64:
parms[n] = _base.GetParamValueInt64((IntPtr)argint[n]);
break;
case TypeAffinity.Double:
parms[n] = _base.GetParamValueDouble((IntPtr)argint[n]);
break;
case TypeAffinity.Text:
parms[n] = _base.GetParamValueText((IntPtr)argint[n]);
break;
case TypeAffinity.Blob:
{
int x;
byte[] blob;
x = (int)_base.GetParamValueBytes((IntPtr)argint[n], 0, null, 0, 0);
blob = new byte[x];
_base.GetParamValueBytes((IntPtr)argint[n], 0, blob, 0, x);
parms[n] = blob;
}
break;
case TypeAffinity.DateTime: // Never happens here but what the heck, maybe it will one day.
parms[n] = _base.ToDateTime(_base.GetParamValueText((IntPtr)argint[n]));
break;
}
}
return(parms);
}
