Hi, please expose a property in TelerikGrid where we can set the number of virtual columns to load in advance. A lot of times we would like to load data in advance for 5-10 columns left & right of the current viewport, so the user doesn't see empty columns while scrolling. This may apply to rows as well. It would be very helpful to have this property, please consider exposing it. Thank you.
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ADMIN EDIT
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The column Virtualization feature improves the Grid performance when it has a lot of columns. This does not include loading data on demand, but rather UI virtualization. All the data is retrieved and the performance optimization is achieved by rendering only the columns for the current Grid viewport. When the user scrolls horizontally the content for the other columns is rendered and while this happens, the cells appear empty. The requested parameter will control the number of columns that will be rendered in the current viewport but will not be visible until the user scrolls. Thus, the user will not see empty columns.
Hi, please expose the debounce delay as a property of TelerikGrid so we can set how soon virtualized columns are loaded after the user scrolls.
**Admin Edit**
This feature request requires research, and if such DebounceDelay parameter can work with good quality in all cases - it will be implemented. Additionally, we will revise the feature together with loading next set of columns if it will be applicable.
**Admin Edit**
Right now you can create a template in the grid to display text from a list based on the foreign key in the grid data. For example, if your database has a table user list and a table role. The Role table has an integer Id primary key column and a text Description column. The user table has a foreign key integer column that is the Role Id. You can bring all the data over when you call up the data (flattening the data) or you can just bring over the foreign key integer value for the role and then create templates.
The situation is described here:
https://docs.telerik.com/blazor-ui/knowledge-base/grids-foreign-key
When you do not flatten the data, you would need to retrieve the role collection and then reference that data in templates in the grid. You need a template for the grid itself, a template for filtering, and a template for the grouping. Maybe more that I am not finding?
What would be great is if you could simply set the foreign key collection for the column and not have to create any templates. You would have to also set what the Id and display text fields are on the collection also so the grid would know what data to use for finding and displaying the desired data. You could require a standard collection with standard field names and then we would have to project the values into it from our other collections using linq.
Using OnRowDrop works fine but there is no configuration possible to set the column at the end of the grid.
Of course it's a personnal taste but I like to have the all the actions buttons on the right side
Currently, when you open a ColumnMenu, to expand its SubMenus (for example, Filter, Column chooser) you need to additionally click on the corresponding button.
I'd like to have these SubMenus initially expanded when the ColumnMenu is opened.
Hi,
Please lunch your demo on mobile, and try resizing a column it is very hard or impossible to do it.
Isn't possible to make resizing more pixel sensible around the separator for instance 10 pixels, and add AUTO FIT column/columns in column menu.
Best regards,
If a Grid column is bound to a nullable bool field and some of the data source records have null values for that field they are not displayed, the Grid cells appear empty.
It would be nice if the Grid displays some text for the null values, for example just "null".
For example in the following demo:
https://demos.telerik.com/blazor-ui/grid/custom-filter-menu
If I first filter "38" by "Size" and then open the second filter menu "Product Name", I see all the product names in the pop-up, not only the previously filtered by "Size" names. I want to see in the second filter pop-up only the filtered names by "Size".
It will be nice to have this grid filter out-of-box, so you don't have to scroll to unwanted values not part of the first filter.
------------ADMIN EDIT-------------
As a possible workaround, you can use the Filter Menu Template:
It allows you to change the data for the filter menu.
I want to use a multi-checkbox filter with ExpandoObject in Grid.
Add a setting similar to the AllowUnsort so that I can disable the unsorted state of the Grid.
ADMIN EDIT:
Here is how to achieve this with the Grid state.
In a grouped Grid with Incell editing if I collapse all groups and then expand one to edit an item in it, once I press Enter to complete the editing all groups expand.
Please add option for persisting the Collapsed State of the groups.
---ADMIN EDIT
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The feature applies to the other data operations as well (for example, paging, sorting).
We often have grid data with a widely varying quantity of cell content from row to row. We usually present this with constant row height initially to have as much row overview as possible at a glance.
Grabbing the row divider line and individually make it larger or even double click on it to fit the size would be very useful for users.