Supported file types: PNG, JPG, JPEG, ZIP, RAR, TXT. View the source code of each of the demos or directly adapt and edit them, including their theme appearance, in some of our dedicated playgrounds for Blazor projects . Do you send only data ? What happens when i change page in RadGrid source code ? An error has occurred. Blazor DataGrid Demos - Observable Data | Telerik UI for Blazor Supported file types: PNG, JPG, JPEG, ZIP, RAR, TXT. The trial version will randomly render trial messages on the components. This detection works as follows: Blazor Data Grid Data grids are the gold standard for displaying large amounts of data in business applications. Basics There are two main steps to data bind a Grid: Provide the data. I have an issue with websocket data volume on RadGrid. Thanks. I can't accept 370kbytes of volume each time they change page. Telerik Blazor Grid is data source agnostic - you can use any database and service according to your project. This component is part of the largest truly native Blazor component suite - Telerik UI for Blazor designed to perfectly fit in any app's requirement. 18. The only full-featured Blazor DataGrid | Telerik UI for Blazor This application may no longer respond until reloaded. Now enhanced with: We are looking to implement the grid to replace agGrid in a situation where the users are accustomed to some patterns. Use async Task and not async void. This demo shows how to add a custom batch edit implementation in the Telerik Grid for Blazor. But what are the 375k previous bytes ?Is there a way to avoid them ? Then i have changed page one time in my browser and i have stopped sniffer. To begin with the issue that I see as crucial for this: my customers will run my application with a very poor connexion. When i put 250 items per pages (same project, same datas, i just changed PageSize property): I got a "JS.RenderBatch" message of 385kb: My Grid data is stored between 0x5296 and 0x58f8. Grid Performance in UI for Blazor | Telerik Forums We do not do our own rendering, we let the framework do that, because we make truly native components. Import the Telerik.DataSource.Extensions namespace. Or do you also send formatting parameters or stuff like that ? You can use this feature together with row virtualization. Any ideas about grid or column attributes we could set? Loading the demo source codeplease wait. Now enhanced with: First of all, please note i am doing tests with a Trial version of Telerik (2.25.0).I plan to buy licence in a few days but i need to be sure Telerik is appropriated for my project. These messages are entirely generated and controlled by the framework. Copyright 2022 Progress Software Corporation and/or its subsidiaries or affiliates. The sample code snippet below will let the grid show data, but will not enable complex operations like filtering and sorting. The Telerik Blazor Data Grid provides a comprehensive set of ready-to-use features. The Grid can load sub-groups and items on demand. (Some components require a TValue parameter to define the value type, but not the Grid. Is there a way for me to optimize your grid ? All Telerik .NET tools and Kendo UI JavaScript components in one package. All Rights Reserved. Do you think the 375kbytes datas can be debug informations and if so, how can i remove them ? If it exists, it should be in the hub options builder (AddHubOptions() of AddServerSideBlazor()) but I think that the default is the most efficient that's available in SignalR (websockets with content as compressed as the framework can easily read on the client). Invite a fellow developer to become a Progress customer and each of you can get a $50 Amazon gift voucher. This should not be caused by the trial version though, the only time it can cause more traffic is when it randomly adds the trial message, but that would be random rather than on every request. It will override the currently available "No data" text. Blazor Data Grid Load Group data on demand | Telerik UI for Blazor Use TValue with the AutoComplete, ComboBox, DropDownList, and MultiSelect.) Start Free Trial The child items for the group will be loaded only after the user expands the given group. I am not aware of one. Databind with the OnRead Event - Telerik UI for Blazor Blazor Grid Refresh Data - Telerik UI for Blazor Perhaps somewhere in a template if you wish to show a ton of extra data, but I'd say that such a scenario is better suited as some form of detail template or detail tooltip or detail dialog rather than a nested virtualized list. The original issue (web socked closed) is likely due to the sheer size of data that needs to go through the SignalR connection - our Blazor grid is a truly native Blazor component and so it goes through the framework rendering, it is not a JS component. Marin Bratanov Even if that were possible, I am not sure it would not break the framework. I have made other tests: I have inspected websocket messages and i tried to locate grid datas when i change page. There were no other traffic (Internet or local). Please not i am running this project in a Developpment environnement. It looks like msgpack but i did not managed to decode them in order to understand what they contain. This application may no longer respond until reloaded. Tracking the DOM elements and updating them in the browser is something the framework does, not we. Regards, We are using server-side Blazor and have reports that may have 60k rows. But i do not understand why "message header" grows from 13.8kb to 338kb. Regards, Love the Telerik and Kendo UI products and believe more people should try them? When i say my customers will have a poor Internet connexion i mean i have to optimize my webapp for all my customers and some of them will have a poor internet connexion. There is something strange: I got a "JS.RenderBatch" message of 16.7kbytes. An error has occurred. The grid does not update on data source change. The grid does not update on data source change - Telerik.com An error has occurred. However, by leveraging the DataGrid's OnRead event, you can retrieve data on an "as you need it" basis, fetching objects only as the user pages forward through the grid. We are using server-side Blazor and have reports that may have 60k rows. But it is not easy. This means that using the server-side Blazor model is unlikely to work out for this app very well in the first place. Force a Grid to Refresh - Knowledge Base Article. New to Telerik UI for Blazor? This Blazor Grid - No Data Template demo is part of a unique collection of hundreds of Blazor demos, with which you can see all Telerik Blazor components and their features in action. So: I have a 338kbytes header (0x5296 * 16 /1000), then 26kbytes of grid data ((0x58f8-0x5296) * 16 /1000) and a 19kbytes footer (0x5da3 - 0x58f8) * 16 /1000. The child items for the group will be loaded only after the user expands the given group. https://docs.telerik.com/blazor-ui/components/grid/virtual-scrolling, https://docs.telerik.com/blazor-ui/components/grid/columns/virtual, https://docs.telerik.com/blazor-ui/troubleshooting/general-issues#slow-performance, https://docs.telerik.com/blazor-ui/troubleshooting/js-errors. This Grid is displaying the 500 records. The example builds on top of the, This Blazor Grid - Custom Batch Editing demo is part of a unique collection of hundreds of Blazor demos, with which you can see all. The problem comes when i put 250 items per page. Here is what i've done: - I have create an empty Blazor Server project (.Net 5 dotnet framework) - I have create an Entity with 2 properties: Id (Int32) and Name (String, 10 chars max) - I have create a database with about 500 records of the previous Entity. It shows how to edit data, and save or revert changes in bulk. Are they present in production env ? It shows how to edit data, and save or revert changes in bulk. Blazor DataGrid Demos - No Data Template | Telerik UI for Blazor Thanks. In wireshark, i see a huge amount of data on the websocket stream.Here is a very short extract: And on the bottom of the stream, i can see the datas displayed on my grid: This grid datas are packed and they are not heavy (about 2kbytes). Subscribe to the OnRead event. Progress is the leading provider of application development and digital experience technologies. You are not allowed to use a trial version in production legally. Max total file size - 20MB. I have made a mistake in my initial post. Do you know a way to decode this messages ? Thanks for your answer. This demo shows the capabilities of the Grid to bind its Data parameter to a collection that implements INotifyCollectionChanged. A lot of packets are, and there should be at least one that is a bit larger (that contains the rendering batch for the DOM operation of the framework), but the rest should be tiny ones - several bytes. Are you sure this messages are not generated by RadGrid source code ? Progress Telerik. This is one of the reasons why the fewer markup you have to render at one time - the better. I am attaching here a short video that demonstrates this. I would like to only download data each time a user change page.Thanks. I have changedProperties/launchSettings.json: I was thinking Telerik is not allowed in Production env. Or any other ideas? Message ends at 0x5da3. if users prefer to scroll rather than page, use Virtual Scrolling: if you have many columns, enable Column Virtualization (with paging or virtual scrolling): reduce the markup you render in things like cell templates (for example, consider. Thanks. This Blazor Grid - Overview demo is part of a unique collection of hundreds of Blazor demos, with which you can see all Telerik Blazor components and their features in action. I have an issue with websocket data volume on RadGrid. You only need to get the collection of data models to the Grid in the view-model of the component hosting it. Progress is the leading provider of application development and digital experience technologies. I suppose that reading the framework source code may provide some insights, but I have not tried to delve into that, nor have I tried to disassemble what they contain. I get an error: WebSocket closed with error 1006. The difference between the trial and dev versions of our tools are: Otherwise the functionality and builds are the same, they are both built in Release mode. This Blazor Grid - Observable Data demo is part of a unique collection of hundreds of Blazor demos, with which you can see all Telerik Blazor components and their features in action. You can read some more ideas on optimizing Blazor components performancehere, and if grouping is vital, the options you have are either paging, or loading groups on demand. Grid Group Data Load On Demand - Documentation. Blazor DataGrid Demos - Batch Editing | Telerik UI for Blazor This Blazor Grid - Grouping Load On Demand demo is part of a unique collection of hundreds of Blazor demos, with which you can see all. @using telerik.datasource.extensions @code { public list sourcedata { get; set; } // handling grouping happens here - by casting the datasourceresult.data to objects The way to optimize this is to optimize the grid rendering - basically, to reduce the batches of content that needs to be updated - the fewer DOM elements, the better Blazor works. New to Telerik UI for Blazor? To the best of my knowledge, the signalr traffic contains only events and dom updates, it should not contain debug info, bug you can easily verify that by switching your app to release mode and inspecting the traffic again. We use absolutely standard Blazor rendering methods (things like foreach loops, conditional markup, etc.) All Rights Reserved. Blazor Data Binding | Grid for Blazor - Telerik UI for Blazor Bind to DataTable - Telerik.com For it packet loss and latency are extremely detrimental, and poor connections are better suited to the WebAssembly model where the initial load is a tad heavier, but then requests are made over HTTP(S) for data only, and not for rendering. They cover everything from paging, sorting, filtering, editing, and grouping to row virtualization, optimized data reading, keyboard navigation and accessibility support. The No Data Template allows you to define custom content when the Grid has no data to display. The Telerik UI for Blazor grid is built specifically for this task by incorporating a wealth of features, most of which can be enabled in a simple and intuitive way. Our preference is not to use paging, and since we have grouping, it seems that virtual scrolling is not an option. Review the demo linked above for more details on the correct approach.--- I would like to be able to supply a DataTable with an arbitrary amount of columns to the grid and display them all without declaring them all . New to Telerik UI for Blazor? Progress Telerik. Moreover, our grid works in .NET Core 3.1 where the Virtualize component is not available. This is useful, for example, when you only want to show a few columns in the grid, but the model has . View the source code of each of the demos or directly adapt and edit them, including their theme appearance, in some of our dedicated playgrounds for Blazor projects - Telerik REPL for Blazor. Blazor Server RadGrid: huge websocket data volume issue - Telerik In Blazor, the framework will fire the OnParametersSet event of a child component (which is how child components can react to outside changes) only when it can detect a change in the object it receives through the corresponding parameter (like Data for the data sources of Telerik components). Do you have an idea about this error ? (Like in your video, an address represents a 16 bytes block). See Trademarks for appropriate markings. An example of such data source would be the ObservableCollection. The Blazor UI suite also comes with professionally designed themes enabled with a flip of a switch, document processing library, rich docs & demos to help you get started in no time. View the source code of each of the demos or directly adapt and edit them, including . Do you think this big headers can be debug informations ? In fact, to some extent our virtualization implementation was the inspiration for this component. Thus, the Blazor grid is subject to the rules and limitations of the Blazor framework - of which the most relevant here is that too large DOM operations don't work too well and you need to optimize that (e.g., with paging or virtualization). The Grid is aware of this event and will automatically reflect the changes. Thus, I strongly suggest you consider a PoC with that model for such a user base. Description The Grid can load sub-groups and items on demand. I understand for the server-side Blazor model. Thanks. Right now we struggle to load as many as 10k rows, even without grouping. - Telerik paging is very slow for me (my customers will run my application with a very poor connexion), - I have sniffed packets on network and i have seen a very huge amount of data in websocket traffic when i click on another Radgrid page on my browser: 377ko per page (for only 10 items of { Int32, String[10] } ! and so we let the framework do the rendering - this is how a native Blazor component should work. Everything works fine in Development env. this sample shows how to set up the grid to use grouping with manual data source operations, and how to use the telerik datasource extensions to prepare grouped data. I am trying to put a hook or a middleware on signalr circuit in order to see human readable format for every send message on websocket. My gut tells me that the framework adds metadata in the header of the signalr message - things like which DOM elements to modify, maybe when, maybe some event sequence or health checks (like checksums or even some logic). Set the Grid's TItem parameter to the model type. Virtual Classroom, the free self-paced technical training that gets you up to speed with Telerik and Kendo UI products quickly just got a fresh new look + new and improved content including a brand new Blazor course! Telerik and Kendo UI are part of Progress product portfolio. Is there a simple way to decode this binary messages ? Telerik and Kendo UI are part of Progress product portfolio. Nevertheless, 370kb of traffic for a page change is not expected. We are looking to implement the grid to replace agGrid in a situation where the users are accustomed to some patterns. Data "As You Need It" with Telerik UI for Blazor DataGrid There are two ways to do this: Set the Grid Data parameter. Thus, there is probably something else going on in that test (e.g., for some reason the frames on the network have too much overhead, or the app behavior causes more re-rendering than expected). Everything was done on a virtual machine. The Grid is aware of this event and will automatically reflect the changes. Blazor Grid - Manual Operations - Telerik UI for Blazor Blazor DataGrid Demos - Column Virtualization | Telerik UI for Blazor I don't think that it can be affected by the dynamic compression module of IIS either - it should go to the asp.net core pipeline directly, not to the IIS handlers. This Blazor Grid - Persist State demo is part of a unique collection of hundreds of Blazor demos, with which you can see all Telerik Blazor components and their features in action. This Blazor Grid - Column Virtualization demo is part of a unique collection of hundreds of Blazor demos, with which you can see all Telerik Blazor components and their features in action. Low-Code Data Grids With Blazor - Telerik Blogs When you change the page there are changes standard to blazor rendering in our code - e.g., a collection changes over which a foreach loop is made to render rows. There is no way to compress messages ? You can use this feature together with row virtualization. I can't run in Production mode, maybe due to trial version but i need to know before buying licence why websocket data is so heavy.Thanks a lot. Progress, Telerik, Ipswitch, Chef, Kemp, Flowmon and certain product names used herein are trademarks or registered trademarks of Progress Software Corporation and/or one of its subsidiaries or affiliates in the U.S. and/or other countries. Download Free 30-day trial. This is particularly beneficial when we have large amount of groups, and we need a way to easily navigate between them. Blazor DataGrid Demos - Overview | Telerik UI for Blazor We are not doing any updates in the grid, so it would seem that if we could turn off anything to make it read only (we do filter and sort it, but don't update any cells) then that might lighten the load. Description This demo shows how to add a custom batch edit implementation in the Telerik Grid for Blazor. Check it out athttps://learn.telerik.com/. Loading the demo source codeplease wait. This traffic can grow as the page grows, though, there are many rules that define what re-renders, and there may be adjacent components that also render, depending on how the app is designed and operates, and that can also increase the size of the traffic. Blazor Grid Overview - Telerik UI for Blazor If someone read this message and have an idea: Please let me know; Thanks, Can you confirm me TelerikGrid's internals works with Blazor Virtualize component:https://docs.microsoft.com/en-us/aspnet/core/blazor/components/virtualization?view=aspnetcore-5.0. Progress, Telerik, Ipswitch, Chef, Kemp, Flowmon and certain product names used herein are trademarks or registered trademarks of Progress Software Corporation and/or one of its subsidiaries or affiliates in the U.S. and/or other countries. Loading the demo source codeplease wait. I can see my grid datas in hex viewer: My Grid data is stored between 0x035e and 0x03ab. - I have create an empty Blazor Server project (.Net 5 dotnet framework), - I have create an Entity with 2 properties: Id (Int32) and Name (String, 10 chars max). See Trademarks for appropriate markings. I understand grid datas is heavier in second cases because i have 250 rows instead of 10 (26kb instead of 1.2kb). Our preference is not to use paging, and since we have grouping, it seems that virtual scrolling is not an option. ).Here is what i've done: I have cleared my sniffer. One more thing: I am working in Developpement Environment. Max total file size - 20MB. The INotifyCollectionChanged interface provides a CollectionChanged event which fires when changes are applied to the collection. The Telerik Grid does not use the Virtualize component that comes with the framework and there is no logical place to use it in the context of a grid. Copyright 2022 Progress Software Corporation and/or its subsidiaries or affiliates. For example, when you use a custom edit form, you add/edit the data with your own code and not through the grid. When you change the data source of the grid, it must re-render the data again. I have checked something on Entity Framework and SQL Server: RadGrid sends a new SQL request on each page change and only fetchs 10 items on each page. This application may no longer respond until reloaded. All Telerik .NET tools and Kendo UI JavaScript components in one package. Last address line of message is: 0x418, So I have a 13.8kbytes "header" (0x035e * 16 /1000), then 1.2kb for my grid datas (0x03ab - 0x035e) * 16/1000 and a "footer" of 1.7kbytes (0x0418-0x03ab) * 16 / 1000.

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