Hello, 

as you can see in the provided example : https://blazorrepl.telerik.com/GwEsxPFc05zxpF2u01

i have set a filter for column Country on OnStateInitHandler event. However when  i try to clear the filter from the filtermenutemplate button , Check box has the previous value. But data are bound correctly.

Could you give me some advice?

I like the way Drawer is designed to support navigation.

It would be neat if TabStrip supported the same use-case. The basic idea would be that it would work like the Drawer navigation, but be presented as a tabbed interface. (Github's pull request UI works very much like this.) As this would require new syntax, I'm guessing it would be a new component such as NavTabStrip.

<TelerikRootComponent>

    <TelerikNavTabStrip Data="@NavigablePages">
        <NavTabStripContent>
            @Body
        </NavTabStripContent>
    </TelerikNavTabStrip >

</TelerikRootComponent>

It seems I'm missing Height, MinHeight, and MaxHeight settings here. 

I have found an issue with editing currency values.

Steps to reproduce:

1. Fill up a value 56.55

2. Try to click between 55

3. Cursor is at the end

The same issue about clicking between 56, the cursor will be before the dot.

Hi,

We ran into an issue with manual binding and selected items with Grid component. I used the 'WebApiFromServerApp' sample in 'grid\datasourcerequest-on-server' folder from Telerik's samples on GitHub.

To recreate the issue, modify 'GridWithService.razor' file in 'WebApiFromServerApp' project. I attached modified project.

To test the behavior: 

1. Select records with Id 2 and 3 from grid.
2. Navigate to another page and return back to the first one.
3. Despite selected items exist in the grid's 'SelectedItems', but they are not being shown. This is the first issue.
4. The second issue is you can still select them again! In that case they would be duplicated as selected items.

Thank you.

From what I can see, currently the only way to set the expanded items for a TreeList is through the state.

The main problem is that the state doesn't fire the OnExpand event, meaning that if you have a server loaded tree you need to make sure to load the data before each item is expanded. It also allows for duplicates in the 'ExpandedItems' if you don't check for duplicates before adding to it.

The TreeView has an 'ExpandedItems' parameter that can be bound which is a bit nicer than using the state, but from my quick test this also doesn't fire the OnExpand event.

My request is for one of the following to be added:

1. Similar to how you can set the 'HasChildrenField' or 'ItemsField' on the TreeList, allow a 'IsExpandedField' value to be bound (Should fire the OnExpand when changed if possible). This would be the simplest way allow bindable control over the expansion of items while also making it so we don't have to manage duplicates in the 'ExpandedItems' collection.
   
2. Expose a method to expand/unexpand rows. This would be different to manually changing the state as it would also fire the OnExpand event for each row expanded.
   
3. Similar to the TreeView, allow an 'ExpandedItems' to be bound. Preferably this would also fire the OnExpand event.

When user click into the date picker textbox, the placeholder value is changed to what's set to "format" for the date picker. For example, I have the following configured:

<TelerikTimePicker Placeholder="dd/mm/yyyy" Format="dd/MM/yyyy"></TelerikTimePicker>

The control will display "dd/mm/yyy" in the textbox, however, when user click into the textbox, the placeholder value changes to "dd/MM/yyyy".

Current implementation of Theme Color is annoying.

1. Setting the ThemeColor to be a static class instead of an ENum is bizarre.  It makes it really annoying to pass a typed themeColor into an input parameter.  I can understand the want to be more flexible and the inputs to your controls being a string
2. You are re-using the ThemeColor in several different places where it is simply repeated. This makes things really annoying.  

I recommend:

1. Keeping the inputs to your controls for theme colors to be a string, so you can maintain the flexiblity (reason I assume you changed this in the first place)
2. Use a single enum and in the documentation / examples say by default use "nameof(ThemeColor.Primary) for default themes"  You can add your own custom theme by .... and pass in a string.

Currently, scatter line plots do not support the stepped line style. This is something that would be hugely beneficial to us in our heavy utilization of scatter line plots with time series data.

It would be fantastic to be able to visualize boolean data on a time based chart. We have a lot of time series data, and a good bit of it is boolean. It would be very beneficial to be able to plot that data along side our numeric data to provide context to both. 

Example (blue/green bar at bottom of chart):

Hi,

When we use custom filters with FilterMenuTemplate in combination with setting filters programmatically, the filter value remains visible after using the 'delete' button.

Simplified example:

1. First we load a filter programmatically by the button, this works fine:
   
   
2. When user uses the Delete button, the grid state loses the FilterDescriptor and we get all the data as expected (also the filter icon loses the green color, as expected because no filter is active)
   
   
3. When user reopens the filter menu, the value which was loaded programmatically is still present, without being used as a filter:
   

Note: We have the same issue with a custom filter with a checkbox list and that code is based on the example of the filter menu template in the documentation.

Note 2: When we use the custom filters and the 'Delete' button without setting the filters programmatically, everything works fine.

It's like the 'Delete' button clears the FilterDescriptors in de Grid State (and we get the data we expect), but the FilterDescriptors in the FilterMenuTemplateContext aren't cleared.. But only when those are set programmatically.. (by setting the grid state).

I already tried to think of a workaround by hooking the OnStateChanged, but there the FilterDescriptors on the grid state are empty when the 'Delete' button is used. As expected, because we get the data we want.. But don't think I can access the FilterMenuTemplateContext there, to clear it as well..

In the example below, the home icon is displayed correctly but the two with underscores are not.  Moving the span outside the drawer does display correctly.

<TelerikRootComponent>
    <TelerikDrawer Data="@NavigablePages"
                   @bind-Expanded="@DrawerExpanded"
                   MiniMode="true"
                   Mode="@DrawerMode.Push"
                   @ref="@DrawerRef"
                   @bind-SelectedItem="@SelectedItem">
        <Template>
            <div class="k-drawer-items">
                <ul>
                    <li class="k-drawer-item" style="white-space:nowrap">
                        <span class="k-icon material-icons" style="margin-right: 8px;">home</span>
                        @if (DrawerExpanded)
                        {
                            <span class="k-item-text">Home</span>
                        }
                    </li>
                    <li class="k-drawer-item" style="white-space:nowrap">
                        <span class="k-icon material-icons" style="margin-right: 8px;">shopping_cart</span>
                        @if (DrawerExpanded)
                        {
                            <span class="k-item-text">Shopping Cart</span>
                        }
                    </li>
                    <li class="k-drawer-item" style="white-space:nowrap">
                        <span class="k-icon material-icons" style="margin-right: 8px;">content_paste_search</span>
                        @if (DrawerExpanded)
                        {
                            <span class="k-item-text">Clipboard</span>
                        }
                    </li>
                </ul>
            </div>
        </Template>
        <DrawerContent>
                <div class="content px-4">
                    @Body
                </div>
            </div>
        </DrawerContent>
    </TelerikDrawer>
</TelerikRootComponent>

Hi good morning. I am implementing a FileManager control, but by business logic only certain users have permission to rename files. So in the onEdit method I validate the permission and if it doesn't have it I send a DialogFactory and after that I send an args.IsCancelled = true. And at the end of the event if I click on another item (file) inside the folder. throw an exception:

public async Task OnEdit(FileManagerEditEventArgs args)
    {
        Dialogs.AlertAsync(message, "FileManager");
        args.IsCancelled = true;
    }

crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
      Unhandled exception rendering component: Object reference not set to an instance of an object.
System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.Blazor.Extensions.ReflectionExtensions.GetPropertyValue(Object target, String propertyName)
   at Telerik.Blazor.Components.TelerikFileManager`1[[XXX.WASM.Shared.HierarchicalFileEntry, XXX.WASM.Shared, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].ConvertToFileEntry(Object dataItem)
   at Telerik.Blazor.Components.FileManager.FileView.FileManagerFileViewBase`1[[XXX.WASM.Shared.HierarchicalFileEntry, XXX.WASM.Shared, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].ConvertToFileEntry(Object dataItem)
   at Telerik.Blazor.Components.FileManager.FileView.FileManagerListFileView`1.<>c__DisplayClass17_2[[XXX.WASM.Shared.HierarchicalFileEntry, XXX.WASM.Shared, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].<BuildRenderTree>b__8(RenderTreeBuilder __builder3)
   at Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder.AddContent(Int32 sequence, RenderFragment fragment)
   at Telerik.Blazor.Components.ListView.ListViewItem`1[[XXX.WASM.Shared.HierarchicalFileEntry, XXX.WASM.Shared, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].<BuildRenderTree>b__17_0(RenderTreeBuilder __builder2)
   at Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder.AddContent(Int32 sequence, RenderFragment fragment)
   at Microsoft.AspNetCore.Components.CascadingValue`1[[Telerik.Blazor.Components.ListView.IListViewCommandContainer, Telerik.Blazor, Version=3.3.0.0, Culture=neutral, PublicKeyToken=20b4b0547069c4f8]].Render(RenderTreeBuilder builder)
   at Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment, Exception& renderFragmentException)

We're a paying customer for the Blazor software components under AVEVA.

We need to do a substantial amount of custom real-time drawing on top of a Blazor based map control using a layer rendered on top of the Tile Layer.  The currently supported Map layers are somewhat specific to smaller map indicators and static overlays.

Our rendering subsystem doing this drawing will be using SkiaSharp/Skia on WebAssembly, drawing on a Skiasharp canvas in the browser (this already works).  I'm assuming behind the scenes the Map is drawing with a standard HTML canvas.

I believe we need a solution which resembles the following:

- The Image is a layer rendered on top of the map viewport (as opposed to the entire map canvas)

- The Image layer can know the size of the ViewPort so it can create an identical size image (or perhaps this is handled automatically by the Map control)

- The Image layer can be re-rendered as often as the customer code desires (we're showing realtime data on top of maps, so we will want to re-render the Image layer say every 250ms.

- When the map viewport changes (pan, zoom, etc.), events are fired so the Image layer customer code can re-render the image based on the new viewport coordinates and zoom level.

- Click events are passed through the Image Layer for processing.

Since we're using a different rendering technology than the underlying map control, my assumption is the best way to keep this simple is our code draws to a SkiaSharp canvas then converts that to PNG/BMP/whatever so that can be injected into the Image layer for rendering.

It would be expected that every pan/zoom/viewport change causes an entire re-rendering of the Image layer.