internal int CompareObjects(object value1, object value2, int rowIndex1, int rowIndex2)
{
if (value1 is ComparedObjectMax)
{
return(1);
}
else if (value2 is ComparedObjectMax)
{
return(-1);
}
int result = 0;
if (customComparer is null)
{
if (!dataGridView.OnSortCompare(dataGridViewSortedColumn, value1, value2, rowIndex1, rowIndex2, out result))
{
if (!(value1 is IComparable) && !(value2 is IComparable))
{
if (value1 is null)
{
if (value2 is null)
{
result = 0;
}
else
{
result = 1;
}
}
else if (value2 is null)
{
result = -1;
}
else
{
result = Comparer.Default.Compare(value1.ToString(), value2.ToString());
}
}
else
{
result = Comparer.Default.Compare(value1, value2);
}
if (result == 0)
{
if (ascending)
{
result = rowIndex1 - rowIndex2;
}
else
{
result = rowIndex2 - rowIndex1;
}
}
}
}
else
{
Debug.Assert(value1 is DataGridViewRow);
Debug.Assert(value2 is DataGridViewRow);
Debug.Assert(value1 is not null);
Debug.Assert(value2 is not null);
//
result = customComparer.Compare(value1, value2);
}
if (ascending)
{
return(result);
}
else
{
return(-result);
}
}
