After filtering a nullable DateTime column, the SelectAll checkbox in the GridCheckboxColumn becomes selected, and its functionality stops working correctly.
Please add support for automatic Grid table layout, which will allow column widths to be set by the browser, based on the cell content.
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TELERIK EDIT:
This is a huge task with many implications. We require large-enough customer demand before we start exploring or implementing it.
Everyone who is interested, please drop a few lines here and share:
- What problems are you trying to solve?
- What benefits you want to achieve?
- Why the current Grid capabilities and behavior don't work for you?
Here are some thoughts on the matter:
HTML tables have two layout modes: auto and fixed. In auto layout, the table column widths depend on the content. In fixed layout, all column widths are equal or obey the set styles, no matter the content.
The Blazor Grid renders separate tables for its header cells and data cells. This allows the data area to scroll, while the header area remains visible at all times. The only reliable way to ensure column alignment between the two tables is to apply a fixed table-layout style. This results in the behavior, which we have described in the documentation.
The only way to have auto table layout in the Blazor Grid is to render the component as a single <table>, which is currently not available.
Possible workarounds include:
- Set optimal fixed widths for all columns, or at least the ones with predictable content.
- Autofit the columns with non-predictable content, or simply set a bit larger widths to make sure the content doesn't clip or wrap.
Here is are a few links on the matter:
In many cases the header text of columns gets truncated to an ellipses if the columns aren't wide enough. It would be nice if there was a global way to display a tooltip for each column header that is made up of the header text. I know that I can do this using the column header template, but that will require that I create a template for every column in all of my grids. I'm looking for a way to have it work globally. This could be with a general header template that has context about the header Title, or just a Boolean flag to display column header tooltips.
Thanks,
Mike
When the Grid PageSize exceeds the current data count and the InputType is Input, the Pager content cannot gain focus with the keyboard.
Here is a test page. A possible workaround is to switch the InputType at runtime. Then the user will be able to focus inside the Pager.
In some scenarios you may need a bit of extra code to get the current Grid item count.
<TelerikGrid Data="@GridData"
Pageable="true"
@bind-PageSize="@GridPageSize"
Navigable="true">
<GridSettings>
<GridPagerSettings InputType="@GridPagerInputType"
PageSizes="@( new List<int?> { 2, 5 } )" />
</GridSettings>
<GridColumns>
<GridColumn Field="@nameof(SampleModel.Name)" />
</GridColumns>
</TelerikGrid>
@code {
private List<SampleModel> GridData { get; set; } = new();
private int GridPageSize { get; set; } = 5;
//private PagerInputType GridPagerInputType { get; set; } = PagerInputType.Input;
private PagerInputType GridPagerInputType => GridPageSize >= GridData.Count ? PagerInputType.Buttons : PagerInputType.Input;
protected override void OnInitialized()
{
for (int i = 1; i <= 3; i++)
{
GridData.Add(new SampleModel()
{
Id = i,
Name = $"Name {i}"
});
}
}
public class SampleModel
{
public int Id { get; set; }
public string Name { get; set; } = string.Empty;
}
}
The Grid performance worsens progressively with each subsequent edit operation. Please optimize that.
Test page: https://blazorrepl.telerik.com/mJuHFNbb17FpJu9b54
Click on a Price or Quantity cell to start edit mode and tab repetitively to observe the degradation.
Please consider adding a TooltipTemplate parameter to the GridColumn component to allow developers to define custom tooltips for each cell using the same template logic available in CellTemplate.
Why This Matters
In enterprise applications — especially in ERP dashboards, cutover schedules, and KPI reports — data often needs contextual clarification. While tooltips are supported globally or via title attributes, there’s currently no clean, built-in way to customize tooltips per column using templating logic.
Please consider adding support for an optional header row indicator that can display a conditional icon + themed tooltip, used to show non-field-level validation or status messages — especially during inline or in-cell editing, and ideally in batch edit scenarios.
Why This Is Needed
In enterprise applications — especially those with batch entry workflows, cutover planning, or financial approvals — validation needs often extend beyond just field-level errors. Common use cases include:
- Rule-level messages (e.g., “Only one Primary Owner allowed per group”).
- Cross-row or cross-field issues (e.g., overlapping dates, missing dependencies).
- Batch edit feedback (e.g., conflict indicators before submit).
Currently, there’s no clean way to show column-specific validation or guidance in a visual, inline way that:
- Doesn’t clutter the cell.
- Surfaces at the column level (just like a header).
- Feels native to the grid.
Please consider altering or providing configuration for how DateTime values are formatted in filter expressions generated by ToDataSourceRequest(). Currently, the format includes full precision (e.g., 2025-04-04T00:00:00.0000000), which causes issues when passed to Entity Framework Core with SQL Server, as SQL Server expects precision up to milliseconds (.fff), not ticks (.fffffff).
Why This Is a Problem
- When passing filter expressions from ToDataSourceRequest() directly into a LINQ-to-EF query, the resulting SQL query fails if the DateTime string has 0000000 (7 digits of precision).
- SQL Server’s datetime and datetime2 types don’t support nanosecond-level precision.
- EF Core attempts to translate it, but fails with SQL conversion errors
Please add a ToolbarTitle property to grid components, with an optional ToolbarTitleTooltip or ToolbarTitleAdornmentTemplate. This would allow developers to display a title with optional help text directly in the toolbar — giving users immediate context on the data being displayed.
Why This Is Valuable
In enterprise apps — particularly in areas like dashboards, scheduling, and ERP grids — users are often viewing:
- Similar grids across multiple tabs or modules
- Role-specific data views (e.g., “My Open Tasks”, “Org View Only”)
- Filtered subsets or critical cutover lists
Providing a toolbar-level title with a subtle help icon improves discoverability and reduces confusion — especially when filters or dynamic data shaping is in play.
Please add a built-in way to define a list of predefined filters (filter presets) within the ToolbarTemplate of a grid. This would allow users to quickly select a filter configuration, which is then automatically applied to the grid’s DataSourceRequest.
Why This Is InvaluablE
In enterprise apps with dense, multi-column grids, users often need to:
- Filter to common scenarios (e.g., “My Tasks”, “Due This Week”, “Unassigned Only”).
- Avoid re-entering the same filters repeatedly.
- See role- or context-based presets applied consistently
Currently, implementing this requires custom filter logic, state management, and manual data reloading — even though the concept is straightforward from a user’s perspective.
Please add support for a right-side filter panel (sidebar) that dynamically renders filter controls based on the grid’s visible columns and their editor templates. The panel would allow users to apply multiple filters at once, similar to SharePoint’s column filter experience — in a tall, narrow layout with an “Apply Filters” button.
Why This Matters
While column-level filters are useful, in real-world business apps:
- Users often want to set multiple filters at once without interacting with tiny filter icons.
- They need to see all available filters in one place — especially in cutover task lists, audit views, or reporting grids.
- This UI pattern is familiar from tools like SharePoint, Power BI, and Microsoft Lists.
After filtering a nullable int column, the SelectAll checkbox in the GridCheckboxColumn stops working.
Reproduction example: https://blazorrepl.telerik.com/mTuyHaYM44sLH2yf05
I would like to add some custom actions into the popup window. I know I can implement a custom edit popup with an entirely custom content and actions. However, this requires a lot of custom work to just add one additional action in the popup. Please provide an easier option to add custom actions in the edit window.
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Since verion 9, the new styling is doing something strange.
The issue is also observable on the Tererik demo site (as well as our published applications) but I have noticed its on webassembly more-so than server apps;
https://demos.telerik.com/blazor-ui/grid/adaptive
If I run the demo site, the new pagination style (where you can type the page you want to navigate to) will flash up for a second, then it will go back to the old style after a second or 2.
Would anyone know why this is happening?
If the GridScrollMode.Virtual is enabled for the Grid, and the NoDataTemplate exceeds the height of the Grid container, a user can infinitely scroll inside the table even when there is no data and the template is displaying.
===ADMIN EDIT===
A possible workaround is to apply "overflow-y: hidden;" when the NoDataTemplate is shown: REPL link.
I want to change the default Grid loading animation to a pulsing loader indicator.
Hy,
It is possible to have default color themes (Primary,Dark,Info,Error,...) for Telerik Blazor Grid component as well without having to change the color by css overriding?