When the page is printed, the Grid is extended down onto multiple sheets of paper. This is because the Grid is large. The issue I am having is that the column headers are not repeating on each printed page. This makes the grid very hard to read. Is there a setting that can force the column headers to print on each printed page?

=====ADMIN EDIT=====

Reference: Repeated Table Headers Kendo jQuery.

For Excel export, this depends on: https://feedback.telerik.com/document-processing/1356293-print-titles.

For PDF export, this depends on: https://feedback.telerik.com/blazor/1434269-export-grid-to-pdf.

The filter list item menu defined as follows do not have accessible name.  Please provide work around or fix that I can implement.

                            <TelerikGrid Data="@ViewModel.RouterAndDataLossInformation" TItem="TrafficLossSummary"
                                                        Pageable="true" 
                                                        Sortable="true" 
                                                        Groupable="false"
                                                        FilterMode="Telerik.Blazor.GridFilterMode.FilterRow"
                                                        Resizable="true" 
                                                        Reorderable="true"
                                                        Height = "100%">

I noticed a different behavior when filtering programmatically through the state and when you use the filter UI.

When filtering programmatically the filter is set after the data arrives. I am using a FiltterMenu and the filter icon is colored to indicate there is an applied filter only after the data is filtered. When filtering from the menu, I can the opposite behavior - the filter is set first and then the data is filtered. To me, this seems to be the correct behavior.

Reproduction: https://blazorrepl.telerik.com/wSavwTPd367WqA9r37.

The Grid is supposed to show a loading animation when it detects a data operation that requires more than 600ms to complete. However, if this operation is triggered programmatically through the state and not through the UI, the loading indicator is not shown.

Reproduction: https://blazorrepl.telerik.com/mSuPQpvx498wHvV816.

===

ADMIN EDIT

===

A possible workaround for the time being is to use a LoaderContainer component when invoking programmatic data operation similar to how the initial loader is shown here: https://demos.telerik.com/blazor-ui/grid/loading-animation.

I want to be able to enter numbers and the grid to filter numeric fields too according to those numbers. Enums would be nice too.

**Admin Edit**

The feature request will be researched and evaluated. It contradicts to our datasource filtering logic that relies on the type of the fields. Thus, it is highly possible that we will handle the task through a knowledge base example.

**Admin Edit**

The request targets a hierarchical Grid where some items are expanded - when I edit a parent item and then update it, all the respective detail items collapse.

Please add support for persisting the expanded state of the items.

---

ADMIN EDIT

---

The feature applies to the other data operations as well (for example, paging, sorting, filtering etc.).

https://docs.telerik.com/blazor-ui/components/grid/editing/incell#notes 

I am using an EditorTemplate with a method called ChangeHandler(). After clicking in another row everything works fine but if I leave the cell by pressing enter the UpdateHandler gets called more than two times and comparing args.Item with the GridItem doesn't help because the calls are asynchronous.

=====

Admin Edit

With 2.22.0, the InCell editing mode was revamped to provide better user experience and this alters the way it worked. In the common case, there will no longer be double OnUpdate calls (unless explicit application logic invokes them). With 2.23.0, Tab and Enter keys that bubble from editor templates will be handled by the grid like they are handled for the built-in editors.

This means that this issue is, effectively, solved. You can see the Notes section about editor templates to see how you can also handle the OnBlur event to capture mouse clicks outside of the component so that you can save changes and remove the edited item. See the full notes here (the Event Sequence section was heavily revamped for clarity) and here on editor template behavior.

Thus, the previous ides about  Save and Cancel methods on the edit context might not be implemented, which will also be one breaking change that we could avoid:

After discussion with the development team, the proposed resolution is to provide a context that provides Save/Cancel operations. The goal is to provide easier configuration for IncellEditing and EditorTemplates and consistent behavior with mouse and keyboard interaction. However, the change will introduce a breaking change in our EditorTemplate, should be researched further and that is why this is logged as a feature request.

=====

I want to add a custom sort comparer but I don't want to perform the whole sorting manually through the OnRead event.

Please allow adding custom expressions that will be applied to the query that the DataSource package does for easier customizations of the data operations.

Looking through the examples I can't find one with SelectionMode="GridSelectionMode.Multiple" and using a RowTemplate.

ADMIN EDIT: This is not a bug in the component, an example of how this can be implemented by the app is available in the comments.

I'm not sure what I should be binding my checkbox to so it accurately reflects selection state.

From the RowTemplate Example adding SelectionMode:

<TelerikGrid Data=@GridData
             @bind-SelectedItems="@SelectedItems"             
             SelectionMode="GridSelectionMode.Multiple"
             Height="@Height">
    <RowTemplate Context="product">
         @*Trying to inspect what is generated in the examples I came up with this, but not sure what to bind to checked*@
               <td role="gridcell" colspan=0 data-col-index="0">
                    <span>
                        <input class="k-checkbox k-grid-checkbox telerik-blazor" type="checkbox" />
                    </span>
                </td>
         <td>
            <img class="rounded-circle" src="@($"images/{product.ProductId}.jpg")" alt="Alternate Text" />
            @product.ProductName
        </td>
        <td>
            @(String.Format("{0:C2}", product.UnitPrice))
        </td>
    </RowTemplate>
    <GridColumns>
        <GridColumn Field=@nameof(Product.ProductName) Title="Product Name" />
        <GridColumn Field=@nameof(Product.UnitPrice) Title="Unit Price" />
    </GridColumns>
</TelerikGrid>

I am using Telerik Grid in our project and I have enabled the feature Reorderable="true". At GridColumnMenuSettings I am getting the following options:

Set column position :

• Move Next 
• Move Previous

Those options are commonly showing for all columns but I want to disable "Move Next" option for the last column and "Move Previous" option for the first column as these options are not applicable to the corresponding columns.

I have created a custom model where I added an ExpandoObject and a couple properties to it. The Grid seems to render the data successfully but the data operations are not possible - the nested properties are treated as invalid. Please add support for nested ExpandoObject properties in custom models.

---

ADMIN EDIT

---

For the time being, there is a workaround that you may try. Use the ExpandoObject directly, do not nest it in the custom model - bind the Grid Data to a collection of ExpandoObject and populate its properties in the OnInitialized.

@using System.Dynamic

<TelerikGrid Data="@Data" 
             Pageable="true" Sortable="true" Groupable="true"
             FilterMode="Telerik.Blazor.GridFilterMode.FilterRow"
             EditMode="@GridEditMode.Incell"
             Resizable="true" Reorderable="true">
        <GridColumns>
            <GridColumn Field="Id" FieldType="typeof(string)" Width="120px" />
            <GridColumn Field="DetailData.PropertyInt" Title="Column A" FieldType="@typeof(int)"  />
            <GridColumn Field="DetailData.ProptertyString" Title="Column B" FieldType="@typeof(string)"/>
            <GridColumn Field="DetailData.PropertyDate" Title="Column C" FieldType="@typeof(DateTime)"/>
        </GridColumns>
</TelerikGrid>


@code {
    public ExpandoObject[] Data { get; set; } = Array.Empty<ExpandoObject>();

    protected override async Task OnInitializedAsync()
    {
        Data = new ExpandoObject[]
            {
            GetPopulatedExpando(1),
            GetPopulatedExpando(2),
            GetPopulatedExpando(3),
            GetPopulatedExpando(4),
            GetPopulatedExpando(5),
            };
    }

    private ExpandoObject GetPopulatedExpando(int id)
    {
        dynamic expando = new ExpandoObject();
        expando.Id = id;
        dynamic nested = new ExpandoObject();
        nested.PropertyInt = id;
        nested.ProptertyString = "ID " + id;
        nested.PropertyDate = new DateTime(2022, 4, id);
        expando.DetailData = nested;

        return expando;
    }
}

Hello,

 when using grid with multiple-selection mode and row template, ONLY single row selection works. Not able to select multiple rows. Grid somehow internally "reverts"(lose) selection to single row.

Here is full detail, with video and sample "what acts weird". Start with the post " Michal - Posted on: 19 Oct 2023 08:38":

https://feedback.telerik.com/blazor/1463819-grid-row-template-with-selection-unsure-how-to-bind-to-selected-item

Simplified reproducible sample from Nadezhda Tacheva(thanks), has that issue also - try to select multiple rows:

REPL sample

Video with the problem AND expected result(video is based on sample posted at same feedback above "Posted on: 19 Oct 2023 08:38":

https://feedback.telerik.com/attachment/download/1120622

Fully working example(recorded video) in VS - GridCheckBoxColumn in sample "IS HACK!", not required at all(just hint, which can be removed):

@using System.Collections.Generic;
@using System.Dynamic;
    <span>Selection bind not working as expected:</span>
    <TelerikGrid TItem="ExpandoObject"
    @bind-SelectedItems="@gSelectedItems"
                 OnRowClick="@OnGridRowClicked"
                 SelectionMode="GridSelectionMode.Multiple"
                 OnRead=@gHLReadItems
                 RowHeight="60">
        <RowTemplate Context="ctx">
            <td>
                @{
                    var it = (ctx as IDictionary<string, object>);
                    @(it["Name"].ToString())
                }
            </td>
        </RowTemplate>
        <GridColumns>
            <GridCheckboxColumn CheckBoxOnlySelection="true" Visible="false" @key="@("sIDX1")" SelectAll="false" />
            <GridColumn Field="Name" FieldType=@typeof(string) Title="Name" />
        </GridColumns>
    </TelerikGrid>
<span>WORKs OK:</span>
    <TelerikGrid TItem="ExpandoObject"
    @bind-SelectedItems="@gSelectedItems"
                 OnRowClick="@OnGridRowClicked"
                 SelectionMode="GridSelectionMode.Multiple"
                 OnRead=@gHLReadItems
                 RowHeight="60">
        <GridColumns>
            <GridCheckboxColumn CheckBoxOnlySelection="true" Visible="false" @key="@("sIDX2")" SelectAll="false" />
            <GridColumn Field="Name" FieldType=@typeof(string) Title="Name" />
        </GridColumns>
    </TelerikGrid>
        
@code
{
    private List<ExpandoObject> RowData;
    IEnumerable<ExpandoObject> gSelectedItems { get; set; } = Enumerable.Empty<ExpandoObject>();
    protected override void OnInitialized()
    {
        
        RowData = new List<ExpandoObject>();
        dynamic obj0 = new ExpandoObject();
        obj0.Name = "Tester";
        RowData.Add(obj0);
        dynamic obj1 = new ExpandoObject();
        obj1.Name = "Testovicz";
        RowData.Add(obj1);
        dynamic obj2 = new ExpandoObject();
        obj2.Name = "Selectant";
        RowData.Add(obj2);
    }
    protected async Task gHLReadItems(GridReadEventArgs args)
    {
        //RowData are readen from DYNAMIC source, cannot add any NEW property to it
        args.Data = RowData;
        args.Total = 3;
    }
    protected void OnGridRowClicked(GridRowClickEventArgs args)
    {
        var it = args.Item as ExpandoObject;
        if (gSelectedItems.Any(x => x == it))
        {
            gSelectedItems = gSelectedItems.Where(x => x != it);
        }
        else
        {
            gSelectedItems = gSelectedItems.Union(RowData.Where(x => x == it));
        }
    }
}

thanks