Generic List as Parameter

[George]

I am using the report controls in our mvvm silverlight application. I am passing in 5 different parameters within a dictionary. the last item in this dictionary is a List<int>. This list contains ids that I will then use against an entity to create my report from. 

I am finding no luck anywhere on how to pass in a generic list as a parameter. Again we are using an MVVM pattern so the examples I have seen online that use codebehind are not much help. I am sure that I am missing something within the report itself that will allow me to use a Generic list.

[Steve]

Hi George,

Currently the approach from the Programmatic Initialization of Report Parameter Values in Telerik Reporting Silverlight Viewer KB article is the only way to pass parameters from the Silverlight client to the reports on the server. So, yes there is no pure MVVM solution as there is no report definition on the client.
Generally Report Parameters allow you to specify or control the data used in a report, connect related reports together and vary report presentation. Using them to pass a datasource for the report is not a correct approach.
As you can see from the referenced article, the available types are Boolean, DateTime, Integer, Float and String. So you can use a string parameter (concatenate the list values) and separate them in the report NeedDataSource event prior usage i.e.:

Copy Code

private void Report1_NeedDataSource(object sender, System.EventArgs e)
   {
           var parameters = this.ReportParameters;
              //..... use against entity to create data source
           this.DataSource = yourdatasource;
   }

Regards,
Steve
the Telerik team