Cannot use VirtualGroupPaging with WebService and ADO.NET

6 replies. Last post: March 8, 2011 11:56 PM by Huy
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Huy Member

Hi Intersoft,

I was tried to upgrade to WebGrid 7 and use virtual group paging feature. I used the sample in http://intersoftpt.wordpress.com/2010/02/10/virtual-group-paging-with-client-binding-in-depth/

and the new webservice file for not using LINQ in this link http://www.intersoftpt.com/Community/WebGrid/Lots-of-problems-using-WebGrid-Clientbinding-Batch-Update-and-Grouping/?1299125329539

but the example didn't work for me. When I try to expand a group, an exception appeared:

"Message":"A circular reference was detected while serializing an object of type \u0027System.Reflection.Module\u0027.","St...

I attached my sample to you.

I'm using ASP.NET 2.0 and VS2005 C#. I'm not using LINQ or ISNET LINQ DataSource, just only ADO.NET: DataSet and DataTable.

This is list dll I used in sample : Webgrid version is 7.0.7200.417 ; WebDesktop is 3.0.7200.322 ; WebCombo is 4.0.7200.232 ; System.Web.Extensions Version is 1.0.61025.0.

I'm not use ISNet.Data.Ling.dll

Another problem is the loading time for dataset with 500 rows. In my sample, I can see the progress icon loading take about 25s for just only 500 rows. Is this normal that loading webservice with 500 rows take about 25s? In my real application, I was faced to large data with more than 10.000 rows.

Please help me investigate why it couldn't run and is the webservice peformance too slow or not?

Thanks,

Huy
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