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c#wpfdatagridrendering

WPF Datagrid VERY SLOW

i am using a datagrid to display a datatable which contains ~50 rows. For some reason the rendering of the grid is very slow, i takes ~ 2sec to display the grid with the data. If I use a ListBox or a ListView for example the rendering is way faster, which means no delay at all. The datatable i want to display has 20 columns, but also if i want to display only one column it has no effect on the rendering performance.

That's the code i am using to display the grid:

    <DataGrid ItemsSource="{Binding Data}" AutoGenerateColumns="True" />

if I set autogeneratecolumns to false (the grid renders the rows but no columns), the grid still needs ~2sec to render

   <DataGrid ItemsSource="{Binding Data}" AutoGenerateColumns="False" />

if i use a listbox instead it has no delay at all (but i need to write a generic template to display all the columns), also ListView has no delays at all

    <ListBox ItemsSource="{Binding Data}"/>

I have no idea why the grid is that slow. I have also tried to set VirtualizingPanel.IsVirtualizing="True" but it had no effect on performance.

Any ideas?

KR Manuel

Solution

  • ALL DataGrid's are horrendously slow (even the ones you pay for). You need to turn on virtualization. VirtualizingStackPanel.IsVirtualizing = true as well as VirtualizingStackPanel.VirtualizationMode = recycling. If you have a lot of columns, or start to do templates, it'll slow to a crawl again. Nothing you can do about that really. I've tried every DataGrid out there (syncfusion, infragistics, etc). They are all very slow.