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Bernd Rickenberg
80
Grid with large dataset, virtualization and grouping
posted

Hi,

I am currently running a trial of Ignite UI MVC extensions 16.1. I have a Grid control (data-bound server side) to about 20,000 rows. Continuous virtualization is configured and works great (and fast!) when grouping is not being used. When I group by one column, e.g. Country, the grid only displays two group rows - but there are many more than two countries in the data set which otherwise display fine.

Can you help? Thanks and kind regards, Bernd.

The mark-up code in the view looks like this:

@(Html.Infragistics().Grid(Model)
      .AutoGenerateColumns(false)
      .Columns(column =>
      {
          column.For(x => x.Id);
          column.For(x => x.CountryTitle);
          column.For(x => x.SubCategory);
      })
      .Features(feature =>
      {
          feature.GroupBy()
              .ColumnSettings(settings =>
              {
                  settings.ColumnSetting().ColumnKey("CountryTitle").IsGroupBy(true);
              });
      })
      .Virtualization(true)
      .VirtualizationMode(VirtualizationMode.Continuous)
      .Height("800px")
      .PrimaryKey("Id")
      .DataBind()
      .Render())