Nested List in RDLC Object DataSource

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4.50/5 (2 votes)

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Hi everyone,

I have the following class:

public class Test
{
    public string Name {get;set;}
    public List<string> stringitems {get;set;}
    public List<subclass> subclassitems {get;set;}
}

public class SubClass
{
  public string Value {get;set;};
}
</subclass></string>

And I want to pass this as a datasource in a RDLC report.

How is this possible I know if you have a nested type you do like this for example =Fields!SubClass.Value.Value

But i dont know about lists. And also there seems to be some problem with a List<string> type.

can anyone please help thx appreciate it.

Posted 6-Mar-11 23:25pm

cdpace

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E L N I N O · Answer 1 · 2012-01-19T02:57:00

You can accomplish this if you create a sub report for the list items and include it in your main report.

Then handle the SubreportProcessing event and set the datasource for the subreport. Sample code below.

C#

ReportViewer1.LocalReport.SubreportProcessing += new SubreportProcessingEventHandler(SetSubDataSource);

C#

public void SetSubDataSource(object sender, SubreportProcessingEventArgs e)
{
    var mainSource = ((LocalReport) sender).DataSources["DataSet1"];
    var subSource = ((List<test>)mainSource.Value).First().subclassitems;
    e.DataSources.Add(new ReportDataSource("SubDataSet1", subSource));
}

Member 8039360 · Answer 2 · 2012-03-27T05:20:00

Solution 2

i create a method, using reflection to find property, in rdlc call the method and get the value...

Posted 27-Mar-12 5:20am

Member 8039360