Aggregate to footer from boolean data

[Harri]

Hi

I found many examples of custom aggregates and I'm able to do aggregate function with those helps for specific class with specific property which is used in my grid. But now I have few situations that I want to get count of checked (in class type boolean with value true) from that column. I would like to get it done in one function so I don't need to do several almost same kind code (only class and property changed).

So how I have to change this function to get it work universally (without class 'DeliveriesForAccountsCls' and property name 'isChecked')?

 

public class CheckedDeliveriesCount : AggregateFunction<DeliveriesForAccountsCls, double>
{
    public CheckedDeliveriesCount ()
    {
        this.AggregationExpression = items => Summary(items);
    }

    private double Summary(IEnumerable<DeliveriesForAccountsCls> source)
    {
        var itemCount = source.Count();
        if (itemCount > 1)
        {
            var values = source.Where(x => x.isChecked);
            var sum = values.Count();
            return sum;
        }

        return 0;
    }
}

 

 

Regards

Harri

 

[Dimitrina]

Hello Harri,

As it turns out there is not a more universal way of defining generic AggregateFunctions. All the accessible information is the one available with the arguments of the function. 

Regards,
Dimitrina
Telerik