If a Grid with ColumnVirtualization enabled is programmatically resized at runtime, some of its cells appear empty. 

The same behavior will occur after column resizing. It looks like it is not accordingly updated as if a scroll horizontally, it updates and the missing data is rendered.

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Edit: Here is a workaround for the column resizing scenario. Part of this approach can be used to workaround Grid resizing as well -

Use the OnStateChanged event simulate horizontal scrolling inside the Grid after column resize. The custom Grid CSS class is optional, if there are pages with multiple Grids.

Razor

<TelerikGrid Class="virtual-grid"
  OnStateChanged="@( (GridStateEventArgs<GridModel> args) => OnGridStateChanged(args) )" />

C#

    async Task OnGridStateChanged(GridStateEventArgs<User> args)
    {
        if (args.PropertyName == "ColumnStates")
        {
            await js.InvokeVoidAsync("loadColumns", "virtual-grid");
        }
    }

JavaScript

function loadColumns(gridClass) {
    var rowContainer = document.querySelector("." + gridClass + " .k-grid-content");
    if (rowContainer) {
        rowContainer.scrollLeft += 1;
        rowContainer.scrollLeft -= 1;
    }
}

When a user clicks outside of the edited input in the same cell, the cell remains in edit mode. The problem occurs in the 2.30.0 version.

You can see this behavior in the Incell Editing demo.

Documentation states that Grid supports Virtualization with Grouping if it is done by loading the Groups on-demand.

See:

On page: Blazor Grid - Load Group Data On Demand | Telerik UI for Blazor

From this, it appears that Virtual Scrolling, Group Load on Demand, and pagination of the results should function as expected.  I'm specifically focusing on the section where it says "load on demand for the data when the user expands a group or when they scroll to need a new set of available groups".

The behavior I am seeing in my Telerik Repl is not matching up with that.

See:  https://blazorrepl.telerik.com/QFbmurvT41eZq6Ld34

In the repl, I have added some Console.WriteLines to see when OnRead is actually called, as well as to log out some other information about the OnRead Request.  It can be seen that no pagination information is included in the request (PageSize = 0, Skip = 0) while the PageSize is set on the actual Grid component (PageSize = 20).

As a result, all groups are loaded initially, which will be problematic if my server-side data set is being grouped on a value that will result in thousands/millions of groups.

It is possible that I missed something in the documentation that would enable the expected behavior (the Grid actually giving me PageSize and Skip so pagination will actually work), but it is also equally possible that this was never intended behavior, and I have been misled by the documentation page.

Please support Display(Order = ...) with autogenerated Grid columns.

Such functionality will also be useful for controlling the order of manually declared columns when using a custom component for reusable columns. For example: https://blazorrepl.telerik.com/cGOtbwOX21f6zQcy35 - the "Name" column is rendered last and currently one cannot control its order.

public class DateModel
{
  [Display(Order = 2)]
  public string Id { get; set; }
  [Display(Order = 1)]
  public string Text { get; set; }
}

I am using Dutch culture and the following issue occurs when resizing - the edit button jumps to the end and back again.

Here is the problem or bug I would like you to look at: If the percent entry component that is in the test application is not in an EditorTemplate, then the OnFocusOut event will fire in Firefox when the Tab or Enter keys is pressed. When the component is within an EditorTemplate, the OnFocusOut event does not fire in Firefox for the Tab/Enter key. This leads me to believe that it is a bug in the Grid and Treelist that is blocking that event from firing in Firefox.

Steps to reproduce:

1. Run the attached project in Firefox.
2. Change one value in percent and press Tab
3. Open the same page in Chrome and repeat

---------------------ADMIN EDIT---------------------

There is one way you can use here to avoid manipulating the onfocusout event to handle percentage input. You can create in your model two properties/values. One value for visualization, with a custom format to represent percentage. Another value to pass along to the business logic, that has the actual fraction. You can see a reference to the described approach in this REPL link.

I would prefer if you can use the FilterMenuTemplate in such a way that you can fetch also "filter criteria" from other fields/columns.

An example:

- grid has 3 coluns > Name, City, Population

- filter mode is set to filter menu and my filter menu should display at the first column.

- after the filter dialog is opened my expactation is that it includes also entries from other fields

In summary, my team would welcome the opportunity of central approach for filtering with multiple fields.

Regards,

Özmen

Hi, 

I am using a grid on a data structure that has nested properties inside. Previously, I was able to do this which worked fine: (notice the first 2 colums)

              <TelerikGrid Data="@PackedInfo.PackedParts" Height="100%">
                    <GridColumns>
                        <GridColumn Field=@nameof(PackedPart.Part.PartNo) Title="Part no" />
                        <GridColumn Field=@nameof(PackedPart.Part.PartDescription) Title="Description" />
                        <GridColumn Field=@nameof(PackedPart.UnitWeightG) Title="Substance Weight" />
                        <GridColumn Field=@nameof(PackedPart.FlashPointCentigrade) Title="Flash point" />
                        <GridColumn Field=@nameof(PackedPart.Pg) Title="PG" />
                        <GridColumn Field=@nameof(PackedPart.Qty) Title="PG" />
                    </GridColumns>
                </TelerikGrid>

I recently upgraded to the latest version (Telerik.UI.for.Blazor (2.29.0) and noticed that the first 2 fields are no longer displaying. I fixed this, by specifying the field names as string values:

               <TelerikGrid Data="@PackedInfo.PackedParts" Height="100%">
                    <GridColumns>
                        <GridColumn Field="Part.PartNo" Title="Part no" />
                        <GridColumn Field="Part.PartDescription" Title="Description" />
                        <GridColumn Field=@nameof(PackedPart.UnitWeightG) Title="Substance Weight" />
                        <GridColumn Field=@nameof(PackedPart.FlashPointCentigrade) Title="Flash point" />
                        <GridColumn Field=@nameof(PackedPart.Pg) Title="PG" />
                        <GridColumn Field=@nameof(PackedPart.Qty) Title="PG" />
                    </GridColumns>
                </TelerikGrid>

I have also tried using @nameof(Part.PartNo) but that didn't work either. Only providing nested properties as string values works. This should not be the intended behaviour i'm sure? 

regards,

Chris Nateghi

AutoFitting all columns should not leave blank space in the Grid, the last column should take the available space.

This functionality might be triggered by a setting a bool parameter to true. 

Hello,

The Grid header and data cells become misaligned if the user changes the page zoom level. The right padding of the Grid header area resizes, according to the zoom level, but the scrollbar width remains the same. This triggers the misalignment.

The problem disappears after browser refresh at the current zoom level.