Terrible performance from RadzenDataGrid

[enchev]

@Mike_T_Angelo

With my original code, as I said, it took 5 seconds for the grid (and the page, in general) to start reacting to events, but 15 seconds after I reloaded the page.

Not sure what's your machine however here is how your original code behaves in our demos on my fairly old (6 years) machine:

@Mike_T_Angelo

The other thing that I noticed is that if I change the filter mode to "Simple" (my example it was set to "Advanced") those 3 seconds that it takes for the page to respond go down to 0. It seems that the Advanced filter mode does a lot of things that hurts performance of the page when rendering.

Of course it will since there is additional HTML rendered for each column (two DropDowns, DatePicker, etc per column) and this HTML will be rerendered on each change state of the component.

@Mike_T_Angelo

One last thing, does this suggested source code is a workaroud? Or is there any way that the grid's original source code can be changed in order to be able to add the columns by ust using the tags and not programatically. Something like not calling StateHasChanged per column but after all the columns have been added.

We are not aware of any faster approach still we are open to any suggestions on how to improve the performance in such case.