public bool Sort(RadSortOrder sortOrder, bool multiSortMode)
{
if (!this.CanSort || this.ownerTemplate == null)
{
return(false);
}
SortDescriptor descriptor = new SortDescriptor(this.Name, GridViewHelper.GetSortDirection(sortOrder));
SortDescriptorCollection sortDescriptors = this.ownerTemplate.SortDescriptors;
bool flag = !multiSortMode && sortDescriptors.Count > 1;
if (flag)
{
if (sortOrder == RadSortOrder.None)
{
descriptor = (SortDescriptor)null;
}
if (this.RaiseSortingChanging(descriptor))
{
return(false);
}
sortDescriptors.BeginUpdate();
sortDescriptors.Clear();
}
int index = sortDescriptors.IndexOf(this.Name);
if (index >= 0)
{
if (sortOrder == RadSortOrder.None)
{
sortDescriptors.RemoveAt(index);
return(true);
}
if (sortOrder == GridViewHelper.GetSortDirection(sortDescriptors[index].Direction))
{
return(false);
}
sortDescriptors[index].Direction = GridViewHelper.GetSortDirection(sortOrder);
return(true);
}
if (sortOrder == RadSortOrder.None)
{
if (flag)
{
sortDescriptors.EndUpdate();
}
return(false);
}
if (!multiSortMode && sortDescriptors.Count == 1)
{
sortDescriptors[0] = descriptor;
}
else
{
sortDescriptors.Add(descriptor);
}
if (flag)
{
sortDescriptors.EndUpdate();
}
return(true);
}
