Questions on UI for Blazor Forum

1 answer

19 views

Blazor UI 9

I am seeing a different behavior between Blazor UI 8 and 9.

Since upgrading to version 9 the GridToolBarTemplate is getting a k-toolbar-scrollable and the toolbar is getting wrapped in a div with k-toolbar-items k-toolbar-items-scroll classes. This is preventing my toolbar from rendering the way it did in version 8.

I added <GridToolBarSettings OverflowMode="GridToolBarOverflowMode.None" /> as he first element of the template but that had no effect.

How can I prevent the toolbar from getting this new div and classes?

Thanks,

Dave Shine

dshine@caseglide.com

Grid

ToolBar

answered on 04 Jul 2025

1 answer

14 views

How to remove tiny little piece of something on the right side of Grid's header?

Hi,
How can I remove this?

Meaning that green part of Telerik's Grid header.

Thanks!
Regards,
Bohdan

Grid

answered on 03 Jul 2025

0 answers

13 views

Add/remove items to SelectedItems when clicking row or checkbox

I’m using the Telerik UI for Blazor <TelerikGrid> in a Razor Page. I’ve bound the grid to my view‑model like this:

<TelerikGrid @ref="SearchGrid"
             TItem="ChargeUIResult"
             Class="cgt-tables__table border-radius-top-zero cgt-charge-preview-grid"
             Width="100%"
             Pageable="true"
             Sortable="false"
             ConfirmDelete="true"
             Resizable="true"
             Groupable="false"
             Navigable="false"
             Reorderable="true"
             EnableLoaderContainer="false"
             FilterMode="GridFilterMode.None"
             EditMode="GridEditMode.Popup"
             SelectionMode="GridSelectionMode.Multiple"
             ShowColumnMenu="true"
             OnRead="@ReadItems"
             SelectedItems="@SearchState.SelectedItems"
             @bind-Page="@SearchState.CurrentPage"
             @bind-PageSize="@SearchState.PageSize">
</TelerikGrid>

What I have:

SearchState.SelectedItems is an IList<ChargeUIResult> that tracks checkbox selection automatically.
Clicking a row currently does nothing to that list.

What I want:

When the user clicks a row, add that item to SearchState.SelectedItems (if it isn’t already there).
When clicking a row again (or unchecking its checkbox), remove it from the list.
Keep the built‑in checkbox selector in sync with row clicks and vice versa.

Grid

asked on 01 Jul 2025

1 answer

25 views

Set selected grid row/item after a Filter event is triggered?

Problem:

User filters a grid but there is no "selected" row/item when filter returns results to the grid.

I'd like to set the selected item for a grid that supports:

SelectionMode="GridSelectionMode.Single"

SelectedItems="@_selectedBookings"

I'm not sure what event I need to respond to, there doesn't appear to be a "Filter" button click event so I'm guessing I need to work with the Grid events like, OnUpdate or OnStateChanged?

Idea is to force first row to be selected from the Filter return set (which could be 0, 1, or many):

    private void OnBookingGridUpdate(GridCommandEventArgs args)
    {
        if (_bookingList.Any())
        {
            var updatedItem = (BookingModel)args.Item;
            _selectedBookings.Clear();
            _selectedBookings.Add(updatedItem);
        }
    }

Thoughts?

Filter

Grid

answered on 01 Jul 2025

1 answer

20 views

Rowclick trigger OnStateChangeHanlder Prevent from calling function

I'm using the Blazor TelerikGrid component with SelectionMode="GridSelectionMode.Multiple".

I have an OnRowClick handler to manually toggle selection (see below), and I bind the selected items via SelectedItems="@SearchState.SelectedItems".

<TelerikGrid @ref="SearchGrid"
             TItem="@ChargeUIResult"
             SelectionMode="GridSelectionMode.Multiple"
             SelectedItems="@SearchState.SelectedItems"
             SelectedItemsChanged="@((IEnumerable<ChargeUIResult> args) => SetSelectedItem(args))"
             OnRowClick="@OnRowClickHandler"
             ...>
</TelerikGrid>

void OnRowClickHandler(GridRowClickEventArgs args)
{
    var currItem = args.Item as ChargeUIResult;

    if (SearchState.SelectedItems.Any(x => x.Id == currItem?.Id))
    {
        SearchState.SelectedItems = SearchState.SelectedItems.Where(x => x.Id != currItem?.Id);
    }
    else
    {
        SearchState.SelectedItems = SearchState.SelectedItems.Concat(new[] { currItem });
    }

    SelectedItem = currItem;
    ShouldRenderSelectedItem = true;
    args.ShouldRender = false;
}

What I want to achieve is:

When a checkbox is clicked (i.e., selection happens),

I want to get the first selected item from SearchState.SelectedItems and bind or use it immediately (e.g., assign it to SelectedItem or update the UI).

💬 My questions are:

Is there a built-in event for detecting checkbox selection (apart from OnRowClick)?

What's the recommended way to access the first selected item when selection changes via the checkbox — not just row clicks?

Can SelectedItemsChanged help with this, and if so, how should I modify the SetSelectedItem logic?

Grid

answered on 30 Jun 2025

1 answer

14 views

Room for Animation Container

Can you tell me how to force the Grid Layout to allow space for my TelerikAnimationContainer? It gets chopped off when the 3rd row is "short". I don't want the scroll bar to accommodate the height. I want to see the entire filter.

Fully opened (When data extends the Grid):

Short Closed:

Short Open

            <TelerikGridLayout Class="grid-layout">
                <GridLayoutRows>
                    <GridLayoutRow Height="28px" />
                    <GridLayoutRow />
                    <GridLayoutRow />
                </GridLayoutRows>
                <GridLayoutItems>
                    <GridLayoutItem Row="1">
                        @if (Groups?.Count > 0)
                        {
                            <TelerikButton OnClick="@OnCreate"
                                           Class="gsi-width-100pct gsi-padding-0">
                                Create New
                            </TelerikButton>
                        }
                    </GridLayoutItem>
                    <GridLayoutItem Row="2">
                        <div>
                            <div class="gsi-background-color-light" style="height: 41px; display:flex;justify-content:space-between;">

                                <div class="align-self-center gsi-font-kendo gsi-margin-0">
                                    Patient Filters
                                </div>
                                <TelerikButton FillMode="Clear"
                                               Class="gsi-border-width-0 gsi-border-color-white gsi-padding-8"
                                               Icon="@(Telerik.SvgIcons.SvgIcon.Filter)"
                                               OnClick="@GridFilterExpandCollapse" />

                            </div>

                            <TelerikAnimationContainer @ref="@FilterContainer"
                                                       Class="gsi-background-color-light gsi-margin-5 k-rounded-0"
                                                       Width="100%"
                                                       Height="100vm">

                                <TelerikStackLayout Spacing="1px" Class="gsi-margin-5">
                                    <TelerikCard Width="33vh">
                                        <CardBody>

                                            @if (SessionOption1Items?.Count > 0)
                                            {
                                                <div class="form-group-short gsi-max-width-250">
                                                    <label class="col-form-label">@SessionOption1Template.Name</label><br />
                                                    <TelerikDropDownList Data="@SessionOption1Items"
                                                                         @bind-Value="@SessionOptionIndex1"
                                                                         TextField="Name" ValueField="Id" />
                                                </div>

                                                @if (SessionOption2Items?.Count > 0)
                                                {
                                                    <div class="form-group-short gsi-max-width-250">
                                                        <label class="col-form-label">@SessionOption2Template.Name</label><br />
                                                        <TelerikDropDownList Data="@SessionOption2Items"
                                                                             @bind-Value="@SessionOptionIndex2"
                                                                             TextField="Name" ValueField="Id" />
                                                    </div>
                                                }
                                            }
                                            else
                                            {
                                                <small>No Defined Filter</small>
                                            }

                                        </CardBody>
                                    </TelerikCard>
                                    <TelerikCard Width="33vh">
                                        <CardBody>

                                            <div class="form-group-short gsi-max-width-250">
                                                <label class="col-form-label">Date Range</label><br />
                                                <TelerikDropDownList Data="@DateRangeOptions"
                                                                     @bind-Value="@DateRangeIndex"
                                                                     TextField="Name" ValueField="Id" />
                                            </div>

                                            <div class="form-group-short gsi-max-width-250">
                                                <label class="col-form-label">Group Behavior</label><br />
                                                <TelerikDropDownList Data="@GroupFilterOptions"
                                                                     @bind-Value="@GroupFilterIndex"
                                                                     TextField="Name" ValueField="Id" />
                                            </div>

                                        </CardBody>
                                    </TelerikCard>
                                    <TelerikCard Width="34vh">
                                        <CardBody>

                                            <div class="form-group-short gsi-max-width-250">
                                                <label class="col-form-label">Status</label><br />
                                                <TelerikDropDownList Data="@IsActiveFilterOptions"
                                                                     @bind-Value="@IsActiveIndex"
                                                                     TextField="Name" ValueField="Id" />
                                            </div>

                                            <div class="form-group-short align-bottom">
                                                <label class="col-form-label gsi-color-white">Apply Filter</label><br />
                                                <TelerikButton OnClick="OnFilterChanged"
                                                               Class="gsi-background-color gsi-color-white gsi-width-100pct">
                                                    Apply Filter
                                                </TelerikButton>
                                            </div>
                                        </CardBody>
                                    </TelerikCard>
                                </TelerikStackLayout>

                            </TelerikAnimationContainer>
                        </div>
                    </GridLayoutItem>
                    <GridLayoutItem Row="3">
                        <TelerikGrid Data=@Sessions
...

answered on 30 Jun 2025

2 answers

21 views

Predictable stack layout heights

Can you tell me how to get a consistent height for my huge "Create New" button? I expected it to just use the space it needed instead of being 5X the size it is.

.gsi-height-32px{
    height: 32px !important;
}

<TelerikStackLayout Height="100%"
                    Width="100%"
                    Orientation="StackLayoutOrientation.Vertical">

    <TelerikButton OnClick="@OnCreate"
                   Class="gsi-width-100pct gsi-height-32px">
        Create New
    </TelerikButton>

    <TelerikGrid Data=@Patients
                 SelectedItems="SelectedPatients"
                 Pageable=true
                 PageSize="20"
                 Height="100%"
                 SelectionMode=GridSelectionMode.Single
                 SelectedItemsChanged="@((IEnumerable<Gsi.Customer.Models.Person> m) => OnPatientSelected(m))">

        <GridColumns>
            <GridColumn Field=@nameof(Person.FirstName) Title="First Name" />
            <GridColumn Field=@nameof(Person.LastName) Title="Last Name" />
            <GridColumn Field=@($"{nameof(Patient)}.{nameof(Patient.DateOfBirthDisplay)}") Title="Date of Birth" Width="125px" />
            <GridColumn Field=@($"{nameof(Patient)}.{nameof(Patient.GenderDisplay)}") Title="Sex" Width="100px" />
            <GridColumn Field=@nameof(Person.LastSessionTimestampDisplay) Title="Last Session" />
        </GridColumns>
    </TelerikGrid>
</TelerikStackLayout>

Button

Grid

StackLayout

answered on 27 Jun 2025

1 answer

16 views

How to display a full custom component below each row while keeping standard columns visible in TelerikGrid

Hello,

I’m working with the TelerikGrid for Blazor and I have a specific layout need.

I would like to display a full custom component (for example, a "MailCard" or a detail panel) under each row of the grid, while still keeping the standard grid columns (like name, date, etc.) visible as usual.

I explored the DetailTemplate, which allows me to show custom content per row, but it requires a manual click on the expand (+) button, and I haven't found any official way to auto-expand all rows by default — especially across pages.

So my two questions are:

Is there a way to embed a full custom component directly within a row, without using the DetailTemplate, while still keeping the columns aligned above?
If not, is there a supported method to auto-expand all rows' DetailTemplate by default, even when paging is enabled?

Thanks in advance for your help or suggestions.

Best regards,

Kenzi

Filter

Grid

GridLayout

answered on 26 Jun 2025

0 answers

13 views

How to display a full custom component below each row while keeping standard columns visible in TelerikGrid

Hello,

I’m working with the TelerikGrid for Blazor and I have a specific layout need.

I would like to display a full custom component (for example, a "MailCard" or a detail panel) under each row of the grid, while still keeping the standard grid columns (like name, date, etc.) visible as usual.

I explored the DetailTemplate, which allows me to show custom content per row, but it requires a manual click on the expand (+) button, and I haven't found any official way to auto-expand all rows by default — especially across pages.

So my two questions are:

Is there a way to embed a full custom component directly within a row, without using the DetailTemplate, while still keeping the columns aligned above?
If not, is there a supported method to auto-expand all rows' DetailTemplate by default, even when paging is enabled?

Thanks in advance for your help or suggestions.

Best regards,
Kenzi

General Discussions

Grid

asked on 25 Jun 2025

0 answers

11 views

Grid Grouping initially renders rows without grouping

Hello,
I’m using a GroupDescriptor and have disabled LoadGroupsOnDemand for data sets under 100 records. I’ve noticed a bug where, on first render, all rows appear ungrouped for a brief moment, then “jump” into their correct groups a split-second later.

When I add a debounce to the OnRead event, the issue disappears, which suggests a correlation between a heavily loaded OnRead handler and the delayed grouping.

What could be causing this behavior, and has anyone encountered something similar?

Grid

asked on 16 Jun 2025