DevExpress XtraReport: boolean filter

Question

I'm working with devexpress and xtrareport tool.

I have done a filter with a boolean paramenter, defined in this way:

this.FilterString = "[ABILITATO] = ?abilitatoParam";

it works but... if I want to see records with ABILITATO set to true, I click on True and the same fo False. But if I want to see all the record, without filtering?

Answer 1

Done with a string filter.

I use the event ParametersRequestSubmit. Then I check the parameters and I set the value I want:

if (e.ParametersInformation[0].Parameter.Value.ToString() == Application.Current.FindResource("Abilitati").ToString())
    e.ParametersInformation[0].Parameter.Value = "True";
else if (e.ParametersInformation[0].Parameter.Value.ToString() == Application.Current.FindResource("Disabilitati").ToString())
    e.ParametersInformation[0].Parameter.Value = "False";
else if (e.ParametersInformation[0].Parameter.Value.ToString() == Application.Current.FindResource("Tutti").ToString())
     e.ParametersInformation[0].Parameter.Value = string.Empty;

and this is the filter string:

"Contains([ABILITATO], ?abilitatoP)"