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Asked: 2026-05-13T20:25:25+00:00

I have an EntityDataSource with OnSelected event (fired after finished query). The event handler

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I have an EntityDataSource with OnSelected event (fired after finished query). The event handler has event args of type EntityDataSourceSelectedEventArgs e. Query runs fine without error and the IEnumerable e.Results contains 1 object (I can run through a non-empty foreach-loop) but e.TotalRowCount returns -1.

Does somebody have an idea what this means and what information TotalRowCount actually expresses? How can I determine the number of selected objects if not by using TotalRowCount?

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  1. Editorial Team

    From http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.entitydatasource.selected(VS.100).aspx:

        The TotalRowCount property of the EntityDataSourceSelectedEventArgs 
object shows the total number of objects in all pages, regardless of the 
values passed by the data-bound control for paging. 

    TotalRowCount is only retrieved if the data-bound 
control needs it, such as if paging is enabled.

    Is your data-bound control using paging?

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