The focus indicator on the GridSearchBox is broken when using an outline themes like A11Y, Bootstrap etc.
Temporarily override the overflow style on .k-toolbar-items (e.g., overflow: unset;) using custom CSS to restore the focus indicator.
When enabling resizing and reordering for the Telerik Grid, using `MinResizableWidth` to set minimal column width will apply the constraint to the column position rather than the actual movable column. This means applying a min width of 200px to the first column will work as expected until the column is moved to another position. Now the column in question no longer has the min width applied, and the column that has moved into the first position has the 200px min width constraint.
It appears this is due to the constraint being applied to the `data-col-index` rather than the `data-col-initialization-index`, or something to that effect.
The following example has a 200px min-width constraint applied to the "Name" first column, and no custom min-with applied to "Address" second column. Switching the columns by moving the "Name" after the "Address" will apply the constraint to the "Address" and not the "Name".
https://blazorrepl.telerik.com/QJEAcuPE41L7Uhiw44
Currently using 7.1.0 but looks to be an issue in later versions as shown by the REPL example. Tested in Firefox and Chrome.
The column position is arbitrary and the bug isn't due to the constraint being applied to the 0 column, applying the constrain to all even columns then shuffling would result in the constrain still being applied to all even columns.
The scenario is:
In this case, the Grid should not try to create or clone an edit item on its own. Instead, it should rely on the returned instance from OnModelInit. However, the Grid first fires OnModelInit and then it still tries to clone or create an edit item, which causes an exception.
A possible workaround is to manage the whole edit process manually, similar to the example with ListView popup editing.
I want to change the default Grid loading animation to a pulsing loader indicator.
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 filter a Grid by DateTimeOffset? field
===ADMIN EDIT===
There are two possible options:
1. Use a DTO in which you have a DateTime field converted as desired by your app from the DateTimeOffset. Filtering, sorting, editing, and grouping on DateTime values are supported out-of-the-box.
REPL example that demonstrates this approach.
2. Use the Grid Filter Template. As a filter editor, you can use the DateTimePicker component, which supports the DateTimeOffset type.
REPL example that demonstrates this approach.
If I group by a column, and one of the values in the column contains a forward slash ( '/'), then the value will not be grouped, the Grid ignores it.
The issue seems to occur only when LoadGroupsOnDemand is set to true.
===
ADMIN EDIT
===
A possible option for the time being is to disable the LoadGroupsOnDemand feature.
After filtering a nullable int column, the SelectAll checkbox in the GridCheckboxColumn stops working.
Reproduction example: https://blazorrepl.telerik.com/mTuyHaYM44sLH2yf05
Hello,
Please consider a Grid feature that changes the component layout on mobile devices or narrow screens. The idea is to switch the column layout to a card layout or anything similar to this example: https://css-tricks.com/responsive-data-tables/
It is possible to implement a similar behavior with the Telerik Blazor Grid and MediaQuery components, but it requires reusing the column titles in the CSS code: https://blazorrepl.telerik.com/GnYPmHFR176Jg5Yg02
===
Telerik Blazor team: Everyone who is interested in this feature, please vote for it to help us prioritize. Also, share your opinion about which Grid features you strictly need in the "mobile" layout and which ones you are ready to sacrifice. Some features don't make sense in a card / listview layout anyway, but still, the mobile-friendly Grid may require completely different HTML markup and UX, so some features may need to be completely revamped.
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.
I have a Telerik Pager within a Telerik Grid. If I select a larger page size within the pager, then select a smaller size and do not scroll, the next time I open the pager, the dropdown portion opens in the wrong place. When I view the inspect tool, it appears that the CSS top value is not being updated when changing page sizes from bigger to smaller. Is this a Telerik limitation with the pager?
In the images, we select items per page from 10 to 25, and then we go immediately from 25 to 10 items per page. Without scrolling, we click into the drop down list again and we are able to replicate this issue.
Before: Items per page: 10 -> 25
After:
Thank you in advance.
Currently, when a user exports the Grid to Excel/CSV/PDF, the export file is generated as a base64 string.
Please provide the file as a byte[] instead of a base64 string for better performance.
I AutoFit all columns in the Grid but would like to be able to reset their width to the initial value at a later point.
===
TELERIK EDIT: Here are two workarounds for two possible scenarios:
<TelerikButton ThemeColor="@ThemeConstants.Button.ThemeColor.Primary"
OnClick="@AutoFitColumns">AutoFit Columns</TelerikButton>
<TelerikButton ThemeColor="@ThemeConstants.Button.ThemeColor.Success"
OnClick="@ResetColumns">Reset Column Widths</TelerikButton>
<TelerikGrid @ref="@GridRef"
Data="@GridData"
Reorderable="true"
Resizable="true">
<GridColumns>
<GridColumn Field="@nameof(Product.Id)" />
<GridColumn Field="@nameof(Product.Name)" />
<GridColumn Field="@nameof(Product.Category)" />
<GridColumn Field="@nameof(Product.Stock)" />
<GridColumn Field="@nameof(Product.Discontinued)" />
</GridColumns>
</TelerikGrid>
@code {
private TelerikGrid<Product>? GridRef { get; set; }
private List<Product> GridData { get; set; } = new();
private async Task AutoFitColumns()
{
if (GridRef == null)
{
return;
}
await GridRef.AutoFitAllColumnsAsync();
}
private async Task ResetColumns()
{
if (GridRef == null)
{
return;
}
var gridState = GridRef.GetState();
foreach (var columnState in gridState.ColumnStates)
{
columnState.Width = "auto;";
}
gridState.TableWidth = $"99.9{DateTime.Now.Millisecond}%"; // Set something close to 100% instead of removing the value
await GridRef.SetStateAsync(gridState);
}
protected override void OnInitialized()
{
for (int i = 1; i <= 5; i++)
{
GridData.Add(new Product()
{
Id = i,
Name = $"Product {i}",
Category = $"Category {i % 4 + 1}",
Stock = Random.Shared.Next(0, 100),
Discontinued = i % 3 == 0
});
}
}
public class Product
{
public int Id { get; set; }
public string Name { get; set; } = string.Empty;
public string Category { get; set; } = string.Empty;
public int Stock { get; set; }
public bool Discontinued { get; set; }
}
}
<TelerikGrid @ref="@GridRef"
Data="@GridData"
Reorderable="true"
Resizable="true"
Width="@GridWidth"
ShowColumnMenu="true"
OnStateChanged="@( (GridStateEventArgs<Product> args) => OnGridStateChanged(args) )">
<GridColumns>
<GridCheckboxColumn SelectAll="true" />
<GridColumn Field="@nameof(Product.Id)" />
<GridColumn Field="@nameof(Product.Name)" />
<GridColumn Field="@nameof(Product.Category)" />
<GridColumn Field="@nameof(Product.Stock)" />
<GridColumn Field="@nameof(Product.Discontinued)" />
</GridColumns>
</TelerikGrid>
@code {
private TelerikGrid<Product>? GridRef { get; set; }
private List<Product> GridData { get; set; } = new();
private string GridWidth => $"{GridIntWidth}px";
private int GridIntWidth = 1000; // A pixel Grid width is required for this scenario
private int GridMaxTableIntWidth => GridIntWidth - 17; // Assuming no horizontal scrolling
private async Task OnGridStateChanged(GridStateEventArgs<Product> args)
{
if (args.PropertyName == "ColumnStates" && Double.Parse(args.GridState.TableWidth.Replace("px", "")) < GridMaxTableIntWidth)
{
args.GridState.TableWidth = $"99.9{DateTime.Now.Millisecond}%"; // Set something close to 100% instead of removing the value
int lastVisibleColumnIndex = GetLastVisibleIndex(args.GridState.ColumnStates);
args.GridState.ColumnStates.First(x => x.Index == lastVisibleColumnIndex).Width = "auto";
await GridRef!.SetStateAsync(args.GridState);
}
}
private int GetLastVisibleIndex(ICollection<GridColumnState> columnStates)
{
int index = 0;
var visibleColumnStates = columnStates.Where(x => !x.Visible.HasValue || x.Visible.Value);
foreach (var columnState in visibleColumnStates)
{
index = Math.Max(index, columnState.Index);
}
return index;
}
protected override void OnInitialized()
{
for (int i = 1; i <= 5; i++)
{
GridData.Add(new Product()
{
Id = i,
Name = $"Product {i}",
Category = $"Category {i % 4 + 1}",
Stock = Random.Shared.Next(0, 100),
Discontinued = i % 3 == 0
});
}
}
public class Product
{
public int Id { get; set; }
public string Name { get; set; } = string.Empty;
public string Category { get; set; } = string.Empty;
public int Stock { get; set; }
public bool Discontinued { get; set; }
}
}