private void RebuildFilter()
{
this.FilterDescriptors.BeginUpdate();
for (int index = this.FilterDescriptors.Count - 1; index >= 0; --index)
{
FilterDescriptor filterDescriptor = this.FilterDescriptors[index];
filterDescriptor.PropertyChanged -= new PropertyChangedEventHandler(this.FilterExpression_PropertyChanged);
this.FilterDescriptors.Remove(filterDescriptor);
}
this.FilterDescriptors.Clear();
FilterDescriptorCollection filterDescriptors = this.FilterDescriptors;
if (this.predicates.Count > 0)
{
filterDescriptors.LogicalOperator = GridViewHelper.GetLogicalOperator(this.predicates[0].BinaryOperator);
}
List <FilterPredicate> validPredicates = this.GetValidPredicates();
for (int index = 0; index < validPredicates.Count; ++index)
{
object[] predicateValues = this.GetPredicateValues(validPredicates[index]);
FilterOperator filterOperator = GridViewHelper.GetFilterOperator(validPredicates[index].Function);
if (filterOperator != FilterOperator.None)
{
FilterDescriptor filterDescriptor = new FilterDescriptor(this.PropertyName, filterOperator, predicateValues[0]);
filterDescriptor.PropertyChanged += new PropertyChangedEventHandler(this.FilterExpression_PropertyChanged);
filterDescriptors.Add(filterDescriptor);
}
else
{
CompositeFilterDescriptor.DescriptorType type = CompositeFilterDescriptor.DescriptorType.Between;
if (this.predicates[index].Function == GridKnownFunction.NotBetween)
{
type = CompositeFilterDescriptor.DescriptorType.NotBetween;
}
CompositeFilterDescriptor descriptor = CompositeFilterDescriptor.CreateDescriptor(type, this.PropertyName, predicateValues[0], predicateValues[1]);
descriptor.PropertyChanged += new PropertyChangedEventHandler(this.FilterExpression_PropertyChanged);
filterDescriptors.Add((FilterDescriptor)descriptor);
}
if (this.IsComposite(validPredicates.Count - index, validPredicates))
{
CompositeFilterDescriptor filterDescriptor = new CompositeFilterDescriptor();
filterDescriptor.PropertyChanged += new PropertyChangedEventHandler(this.FilterExpression_PropertyChanged);
filterDescriptor.LogicalOperator = GridViewHelper.GetLogicalOperator(validPredicates[index + 2].BinaryOperator);
filterDescriptors.Add((FilterDescriptor)filterDescriptor);
filterDescriptors = filterDescriptor.FilterDescriptors;
}
}
this.FilterDescriptors.EndUpdate();
}
