Hi,

How can set the height of a Form and How can set font size of text in form items?

I have a Blazor page which has a Telerik TabStrip component with 2 tabs.

The first tab which is the default tab has a Telerik Grid on it.  This grid uses custom paging, filtering and sorting and as such uses the OnRead method to load data from a database using the GridSourceRequest.

As soon as the Blazor page is navigated to the grid fires the OnRead event using the default grid state and gets the first page of data and populates the grid for the user.

Any user interaction with the grid like sorting or filtering etc fires the OnRead event which in turns queries the database and updates the grid with new data.

So far so good, everything working as expected.

If I click the second tab on the TabStrip to perform some other function and then return back to the grid by clicking the first tab.  What I am expecting to see is the Grid with all its data and state as it was before I clicked on the second tab.

In reality what I get is the OnRead event fires and populates the grid with data from the database which matches the default grid state as if it was the first time that the grid had loaded.

After looking on these forums I realise that this is expected behaviour using the TapStrip component as this is the Blazor way of rendering which means that anything not visible on screen gets removed from the RenderTree and no state is retained.

I up-voted a feature request for the TapStrip component to be enchanced to allow state between tab changes to get persisted or just hidden using CSS. 

But in the meantime I'm looking to implement a solution that will persist the grid state when clicking on tab 2 and then setting the grid state back using the persisted state when clicking back on tab 1.

So far I have managed to persist the grid state but am having trouble setting the grid state.back. 

I have tried calling SetState() on the active tab change event when the new selected tab is tab 1.

This sort of works but what happens is that the grid loads and immediately calls OnRead and populates the grid once with the wrong data and state by calling the database; then the grid flashes and updates with the correct data and state from the SetState() call with data that was persisted in memory.

I have tried updating the OnRead method to only call the database when the persisted state object in memory is null.  I am then trying to set the grid set in the OnInitState event using the persisted state. 

I'm not sure at what point I want reset the persisted state object to null as that means the OnRead method will start calling the database again (which I want it to do eventually) but it seems that when setting the state the OnRead event handler is called multiple times and therefore I don't want the object to be null until the state has been fully set.

Any ideas on how to achieve this please?

 

 

Maybe I'm missing something but I'm not seeing an EditMode = @GridEditMode.None or maybe an Editable = False option. 

How can I quickly set my data grid into a readonly mode?

I realize I can add the "disabled" attribute to the containing <div> element but that disables scrolling and paging through the data.

I am using OnRead to get remote data but sometimes I want to sort locally (all the data is loaded). Is there a way to do that?

What is the standard way to display error messages to the user?  

I have an ASP.NETCore, EFCore, Blazor-Server, Kendo-Blazor-UI application.  A user accomplishing a record change with TelerikGrid might trigger a  DbUpdateConcurrencyException in BankAccountService.Update().  I want to catch the exception, then give the user a useful action such as, "Another user, (*cough* Bob H. in Accounting), made insignificant changes to account (#45678) while you were making your very important modifications.  Please refresh your browser, review Bob's changes, then submit your modifications, again.  Be sure to thank Bob later."  

How is this communication back to the user best accomplished in a standard way?

Thanks!

As long as there has been data binding in .Net, you have been able to bind to properties of inherited classes (and it gets resolved at runtime).
You have long had an issue that while databinding works on these properties, sorting does not. You're WPF datagrid has this problem (which we asked to get fixed years ago and got an acknowledgement of the problem along with vague promise to fix) and your Blazor datagrid suffered same issue (we are told it was because you were relying on LINQ to do the sorting). One should note that WPF's built in datagrid worked fine binding and sorting these properties.

Now, with the latest 2.24 release, you have gone the opposite direction and broke databinding very disappointing to see and makes your product currently unusable.

Hello,

 how to prevent calling "OnParametersSet " multiple times when  DialogFactory is used?

[CascadingParameter]
public DialogFactory Dialogs { get; set; }

 

its firing 2-6 times per page opening. Without DialogFactory,  its correct, only 1x.
Blazor server app. With PreRendering disabled.

Thanks

Just updated to the latest release and gave the multi-column option on the grid a try.  It worked well for most cases, but on an initial transition from a non-multi-column to a multi-column, part of a grid line is missing.  Code is pretty standard stuff, but then, being new to Blazor (or any kind of web programming) I could easily be missing something obvious:

 

        <TelerikGrid Data="@lstOpsYields" Sortable="true" Pageable="true" PageSize="20" Width="100%">

            <GridColumns>

                <GridColumn Title="Field" Field="DisplayName" />

                <GridColumn>
                    <HeaderTemplate><div style="text-align:center">Expected Yield</div></HeaderTemplate>
                    <Columns>
                        <GridColumn Title=@oAppData.SimpleYear1Heading() Field="ExpectedYieldY1">
                            <Template>
                                <div style="text-align: right;"> @((context as CCropOperations).ExpectedYieldY1.ToString(cnYieldFormat))</div>
                            </Template>
                        </GridColumn>

                        <GridColumn Title=@oAppData.SimpleYear2Heading() Field="ExpectedYieldY2">
                            <Template>
                                <div style="text-align: right;">@((context as CCropOperations).ExpectedYieldY2.ToString(cnYieldFormat))</div>
                            </Template>
                        </GridColumn>

                        <GridColumn Title=@oAppData.SimpleYear3Heading() Field="ExpectedYieldY3">
                            <Template>
                                <div style="text-align: right;">@((context as CCropOperations).ExpectedYieldY3.ToString(cnYieldFormat))</div>
                            </Template>
                        </GridColumn>
                    </Columns>
                </GridColumn>

                <GridColumn>
                    <HeaderTemplate><div style="text-align:center">APH less TA</div></HeaderTemplate>
                    <Columns>
                        <GridColumn Title=@oAppData.SimpleYear1Heading() Field="AphTaLessAphY1">
                            <Template>
                                <div style="text-align: right;"> @((context as CCropOperations).AphTaLessAphY1.ToString(cnYieldFormat)) </div>
                            </Template>
                        </GridColumn>

                        <GridColumn Title=@oAppData.SimpleYear2Heading() Field="AphTaLessAphY2">
                            <Template>
                                <div style="text-align: right;">@((context as CCropOperations).AphTaLessAphY2.ToString(cnYieldFormat))</div>
                            </Template>
                        </GridColumn>

                        <GridColumn Title=@oAppData.SimpleYear3Heading() Field="AphTaLessAphY3">
                            <Template>
                                <div style="text-align: right;">@((context as CCropOperations).AphTaLessAphY3.ToString(cnYieldFormat)) </div>
                            </Template>
                        </GridColumn>
                    </Columns>
                </GridColumn>

                <GridCommandColumn Title="Edit" Width="5%">
                    <GridCommandButton OnClick="@((args) => SelectYield(args.Item as CCropOperations))" Icon="edit" />
                </GridCommandColumn>

            </GridColumns>

        </TelerikGrid>

I figured out a way to hide the expander icon during the onRowRender. I've tried different css routes using style which does no consistently hide the column .k-grid k-hierarchy-col (etc.). Is there a setting / way to onRowRender hide this column completely? I am using a context menu to expand and feel it is taking up space on screen.

Hi,

I'm just playing with the TelerikEditor control and I've noticed that if I type or paste some text into the editor and then delete it all, it's leaving behind some HTML.

If just typing text and deleting it, it seems to leave "<p><br></p>" in the bound value. 

When pasting in some code from stack overflow I've also seen it leave behind this: "<pre><code><br></code></pre>" - this happens when you paste part of a code block and then a combination of "delete" & "backspace" (I haven't quite figured the order of deleting to get this).

On a separate note, in an ideal world this control would be functionally similar to the other rich text editors in your suite - I'm trying to find one that behaves the same in Blazor (or the Web) and on WPF, as our application runs on different platforms.  Yours seem very different to each other.

No rush as for me as I probably won't use it anyway, but I thought I'd mention!

Kind Regards,
Nick.