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3 answers
699 views

 I have tried to implement the dropdownlist and the data is being populated to the control, but the control will not dropdown when selected on.

I have tried to changed from Server/Prerender and also tried a static list. I also have the same issues with Telerik menus. What do I have configured wrong.

Running Blazor UI 2.1.1

<TelerikDropDownList Data="@DropDownListData" @bind-Value=@SelectedValue ValueField="ID" TextField="Organization">

</TelerikDropDownList>

<br />Selected product: @SelectedValue



@code {

    public IEnumerable<OrgModel> DropDownListData { get; set; }

    public int SelectedValue { get; set; } = 3;

    WeatherForecast[] forecasts;
    OrgModel[] Orgs;

    protected override async Task OnInitializedAsync()
    {
        forecasts = await ForecastService.GetForecastAsync(DateTime.Now);
        DropDownListData = await OrgService.Get_OrgList_Async();
    }

    //protected async Task OnAfterRenderAsync()
    //{
    //    forecasts = await ForecastService.GetForecastAsync(DateTime.Now);
    //    DropDownListData = await OrgService.Get_OrgList_Async();
    //}

BitShift
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 answered on 30 Oct 2019
1 answer
2.7K+ views

I have a parent component when contains a child component with a TelerikChart.  Using cascading parameters, when I change a value in the parent component it cascades to the child and I rerun queries to create the proper data for the chart.  Often times, but no all the time, a chart will rerender with some of the old data mixed in with some of the new data, even though the data model only contains the new data.

Is there a way to force the chart to totally clear out before rerendering?

Marin Bratanov
Telerik team
 answered on 28 Oct 2019
1 answer
106 views

For example, the menu component.  Where are all the available attributes and events listed for this component. Yes, I see in the examples a "Data" and "orientation" attribute are used, but seems this should be explained in an "api" section for each component?

I see the API Reference link but this seems like just a dump of the entire library, rather than a component-by-component reference?

However, same goes for the other components as well.

Marin Bratanov
Telerik team
 answered on 25 Oct 2019
1 answer
2.2K+ views

There is a note on the documentation page for NumericTextBox saying "The decimal separator is . for the time being. When localization features get implemented in the Telerik UI for Blazor suite... Currency symbols are also rendered by the framework and they come from the current culture as well."

Is that note still relevant?

I made a simple test..

<TelerikNumericTextBox @bind-Value="Number" Format="C"></TelerikNumericTextBox>

@code {
    public decimal Number { get; set; } = (decimal)2.59;
    protected override void OnInitialized()
    {
        System.Globalization.CultureInfo.DefaultThreadCurrentCulture = new System.Globalization.CultureInfo("hr-HR");
    }
}

The numer in numeric text box is displayed as expected - "2,59 kn"  (Notice that it has the correct decimal separator and currency simbol)
When I want to change the number I cannot input "," (comma) as a decimal separator - numericTextBox won't accept it.
So I tried with "." (dot).
I can input "." (dot) but when I enter a number after "." the "." disappears leaving me with an whole number in numericTextBox.

Is this a bug or a missing feature? The note above is confusing because NumericTextBox get's it's formating options from current culture so why doesn't it apply the correct decimal separator?

Thank you

Marin Bratanov
Telerik team
 answered on 25 Oct 2019
1 answer
535 views

I am seeing that the grid filter mode causes the following exception to be thrown: "System.InvalidOperationException: JavaScript interop calls cannot be issued at this time. This is because the component is being prerendered and the page has not yet loaded in the browser or because the circuit is currently disconnected. Components must wrap any JavaScript interop calls in conditional logic to ensure those interop calls are not attempted during prerendering or while the client is disconnected."

Steps to reproduce (project using example from https://docs.telerik.com/blazor-ui/components/grid/overview is at https://github.com/austineric/GridTest):

  1. Open solution
  2. Ctrl + F5
  3. In the address bar add "/test" to the url
  4. In Visual Studio change the output to "GridTest - ASP.NET Core Web Server"
  5. Clear All in the output window
  6. Refresh the browser page
  7. View the exception in the output window
  8. Run the same test but remove the "FilterMode="Telerik.Blazor.GridFilterMode.FilterRow"" and see that the exception does not appear

Error produced using

  • .Net Core 3.0.100
  • Telerik UI for Blazor 2.2.1
  • Visual Studio 16.3.5

The grid appears to be working and filtering correctly despite the exception. Should I disregard? Should I be doing something differently?

Marin Bratanov
Telerik team
 answered on 25 Oct 2019
1 answer
108 views

hi 
i was looking for a way in ui for blazor to transform grid state to  odata compatible string or something like QueryableExtensions in kendo like this 

 

 

Marin Bratanov
Telerik team
 answered on 25 Oct 2019
5 answers
448 views
I am pretty sure i can just write a JavaScript function to go back and find/collapse all the groups in the grid but is there a grid setting where I can just collapse them by default?
Marin Bratanov
Telerik team
 answered on 24 Oct 2019
1 answer
518 views
Is there a way to close a tab? Or can I provide my template for a tab header so I can implement closing?
Marin Bratanov
Telerik team
 answered on 24 Oct 2019
1 answer
1.3K+ views

Is it possible to make the grid command buttons visible on mouse hover of the row?

Sometimes I feel have a grid full of buttons adds a little unnecessary visual noise.

Marin Bratanov
Telerik team
 answered on 24 Oct 2019
3 answers
304 views
Hi, I copy paste the code on your example of Treeview and I add 20 nodes with 20 nodes each and when I try to open up one it takes few seconds. My necessity is to have at least 50-100 elements per node and but actually it takes an "eternity" to visualize everything. Both on open and close operations. What can I do to improve the performance?
Im using Chrome
Marin Bratanov
Telerik team
 answered on 22 Oct 2019
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