private void shiftIndexes(Question entry, int oldIndex, System.Data.Entity.DbSet <Question> dbset)
{
if (entry.Index - oldIndex == 1)
{
//Move forward by 1 step
try
{
dbset.First(x => x.Index == entry.Index).Index = oldIndex; //If was last row - it will throw an exception
}
catch (Exception e)
{ }
}
else if (entry.Index > oldIndex)
{
//We moved forward
foreach (var q in dbset.ToList())
{
if (oldIndex < q.Index && q.Index < entry.Index)
{
q.Index = q.Index - 1;
}
}
entry.Index = entry.Index - 1;
}
else if (entry.Index < oldIndex)
{
//We moved backwards
foreach (var q in dbset.ToList())
{
if (entry.Index <= q.Index && q.Index < oldIndex)
{
q.Index = q.Index + 1;
}
}
}
if (entry.Index > dbset.Count())
{
entry.Index = dbset.Count();
}
else if (entry.Index < 1)
{
entry.Index = 1;
}
}
