User Function with ParamArray?

[Aaron Abdis]

Can you use a user-function with a ParamArray as the argument? I tried but when i preview my report, it gives me the big dreaded error box and says The expression contains undefined function call CsvList().

Here is my function def:

Public Function CsvList(ParamArray items As String()) As String
    Return Join((From s In items Where Not String.IsNullOrEmpty(Trim(s)) Select s).ToArray, ", ")
End Function

and here is my call to the function:

= my_reports.General.CsvList(
  Fields.Firm,
  Fields.Name1,
  Fields.Name2,
  Fields.Address,
  Fields.AptType + " " + Fields.AptNum,
  Fields.City,
  Fields.State,
  Fields.Zip,
  "PH: " + Fields.Phone,
  "FX: " + Fields.Fax,
  "RSN: " + Fields.Reason
)

[Manfred]

Hi Aaron,

I only can talk for C# but there the functions have to be static to be used in Expressions.

Best Regards
Manfred

[Aaron Abdis]

Thanks for the suggestion. That is a C# peculiarity I think (or a VB peculiarity, depending on your angle.  ;)  ). In VB you can put them in a module, as opposed to a class. I don't think C# has the concept of a module right? The closest I think is a static class. Several other functions in a module, with the same access/scope definition work fine.

[Peter]

Hi Aaron Abdis,

Currently User Functions do not support params/ParamArray keywords. However, your suggestion makes sense and we will have that in mind for subsequent versions of Telerik Reporting.

Regards,
Peter
the Telerik team