CODEWITHSUNDEEP
asp.net-coreblazorquickgrid
Daniel
Daniel

Reputation: 3131

How to set QuickGrid virtualized position from query string

I am using Blazor QuickGrid, bound to an ItemProvider with virtualize enabled. I would like to persist the scrolled location of the the grid to the query string, and then have the grid start at that position when linked to.

I feel persisting pagination, sort, and filter is important so that when a user clicks off the grid page, then goes back in history, they are on the same page of data (unless data has changed). I am able to persist to the query string by calling this after items get provided:

private async Task OnGridItemsProvided()
{
    var newQueryString = "state=" + JsonSerializer.Serialize(Provider.GridState);
    var fullUri = new Uri(nav.Uri);
    var baseUri = fullUri.GetLeftPart(UriPartial.Path);
    nav.NavigateTo($"{baseUri}?{newQueryString}");
}

And can confirm the query string updates as I scroll the grid:

data/some?state={"StartIndex":93,"Count":50}

However, I can't find any way to force the grid to go to that location from code when a user lands on that.

What I would like to do is something like:

var stateJson = HttpUtility.ParseQueryString(new Uri(nav.Uri).Query).Get("state");
var state = JsonSerializer.Deserialize<GridState>(stateJson);

grid.Virtualization.SetStartIndex(state.Skip)

I tried using grid.Pagination.SetCurrentPageIndexAsync, but when pagination is set, the grid no longer virtualizes.

Upvotes: 0

Views: 57

Answers (0)

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