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. We do not do our own rendering, we let the framework do that, because we make truly native components. Regards, You can use this feature together with row virtualization. Any ideas about grid or column attributes we could set? This is one of the reasons why the fewer markup you have to render at one time - the better. 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. - I have create a database with about 500 records of the previous Entity. 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). - I have put a RadGrid component with pagination (10 items per page). 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. Progress Telerik. 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. I can't accept 370kbytes of volume each time they change page. Description The Grid can load sub-groups and items on demand. Description This demo shows how to add a custom batch edit implementation in the Telerik Grid for Blazor. 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. This is particularly beneficial when we have large amount of groups, and we need a way to easily navigate between them. Everything was done on a virtual machine. For example, when you use a custom edit form, you add/edit the data with your own code and not through the grid. 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). @using telerik.datasource.extensions @code { public list sourcedata { get; set; } // handling grouping happens here - by casting the datasourceresult.data to objects 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. 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). 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. Subscribe to the OnRead event. 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. 18. Thanks. All Rights Reserved. An example of such data source would be the ObservableCollection. Then i have changed page one time in my browser and i have stopped sniffer. 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). Our preference is not to use paging, and since we have grouping, it seems that virtual scrolling is not an option. You only need to get the collection of data models to the Grid in the view-model of the component hosting it. 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. 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. To begin with the issue that I see as crucial for this: my customers will run my application with a very poor connexion. I have changedProperties/launchSettings.json: I was thinking Telerik is not allowed in Production env. Message ends at 0x5da3. I would like to only download data each time a user change page.Thanks. I understand for the server-side Blazor model. It looks like msgpack but i did not managed to decode them in order to understand what they contain. Copyright 2022 Progress Software Corporation and/or its subsidiaries or affiliates. Telerik and Kendo UI are part of Progress product portfolio. Loading the demo source codeplease wait. 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. An error has occurred. The child items for the group will be loaded only after the user expands the given group. Do you have an idea about this error ? 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. 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 . But what are the 375k previous bytes ?Is there a way to avoid them ? In fact, to some extent our virtualization implementation was the inspiration for this component. But i do not understand why "message header" grows from 13.8kb to 338kb. 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. 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. An error has occurred. 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. 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. Copyright 2022 Progress Software Corporation and/or its subsidiaries or affiliates. Ways to do that are: You can find some more general tips in the following documentation section:https://docs.telerik.com/blazor-ui/troubleshooting/general-issues#slow-performance. Is there a simple way to decode this binary messages ? 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. New to Telerik UI for Blazor? Do you send only data ? - 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). It requires a very good (stable and low-latency) connection between all clients and the server. Supported file types: PNG, JPG, JPEG, ZIP, RAR, TXT. 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. (Like in your video, an address represents a 16 bytes block). All Rights Reserved. It shows how to edit data, and save or revert changes in bulk. 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. Thus, I strongly suggest you consider a PoC with that model for such a user base. I get an error: WebSocket closed with error 1006. Even if that were possible, I am not sure it would not break the framework. I am not aware of one. Thanks. Regards, This means that using the server-side Blazor model is unlikely to work out for this app very well in the first place. The grid does not update on data source change. 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. See Trademarks for appropriate markings. Grid Group Data Load On Demand - Documentation. The Grid is aware of this event and will automatically reflect the changes. What contains this header exactly ? Description. Set the Grid's TItem parameter to the model type. Progress is the leading provider of application development and digital experience technologies. Are they present in production env ? What happens when i change page in RadGrid source code ? Tracking the DOM elements and updating them in the browser is something the framework does, not we. Marin Bratanov Download Free 30-day trial. View the source code of each of the demos or directly adapt and edit them, including . The No Data Template allows you to define custom content when the Grid has no data to display. It will override the currently available "No data" text. 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. Everything works fine in Development env. All Telerik .NET tools and Kendo UI JavaScript components in one package. This is particularly beneficial when we have large amount of groups, and we need a way to easily navigate between them. The Grid can load sub-groups and items on demand. You are not allowed to use a trial version in production legally. An error has occurred. 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.
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