I have been playing around with the pie chart example within the documentation. I have my chart within a card view and I noticed there is a position property on both the Title and Legend of the chart but not for the Chart or SeriesItems. 

I was wondering if it is possible to set the position of the chart within the HTML or if this is something that is going to be added later?

Thanks,

Cameron

I made a ticket on this but thought I would post here as well.

It appears there is an issue with the latest Telerik Blazor version when it comes to adding new grid items.

I can't get it to work in my project and can't get it to work in your demo either.

https://demos.telerik.com/blazor-ui/grid/editing-inline 

Click add new employee.

Fill the info boxes.

View the added row. The Name field is empty.

I stepped through the code in my project and the parameter from the field is always null.

     Hi all, 

New to Blazor and Web development in General, but using Blazor as a way to bridge the gap between my c# knowledge and the web.

Just wondering if anyone has any knowledge of being able to do a if inside a Grid Column  The end goal i'm trying to achieve is if a value is contained within the the property of the CurrentRecord then a button will appear binding to a function, if no record appears then the cell would remain empty.

this is the code i'm bodged together

    <TelerikGrid data="@Histories" height="600px" Pageable="true" PageSize="20" Sortable="true" Filterable="true">
        <TelerikGridColumns>
            <TelerikGridColumn Field="Casecode" />
            <TelerikGridColumn Field="Historytext" />
            <TelerikGridColumn Field="Createdate" Title="Create Date" />
            <TelerikGridColumn>
                <Template>
                    @{ 
                        CurrentRecord = context as CaseHistory;
                        if(CurrentRecord.Blobid > 0)
                        {
                            <TelerikButton>Open</TelerikButton>
                        }
                     }
                </Template>

            </TelerikGridColumn>
        </TelerikGridColumns>
    </TelerikGrid>

at the moment when i'm running the code the command brower is showing an error 

Error: System.ArgumentNullException: Value cannot be null.
Parameter name: name
   at System.Type.GetProperty(String name, BindingFlags bindingAttr)
   at Telerik.Blazor.Components.Grid.TelerikGridFilterHeaderBase`1.get_PropInfo()
   at Telerik.Blazor.Components.Grid.TelerikGridFilterHeaderBase`1.get_PropType()
   at Telerik.Blazor.Components.Grid.TelerikGridFilterHeaderBase`1.get_PropTypeName()
   at Telerik.Blazor.Components.Grid.TelerikGridFilterHeaderBase`1.ResetFilterText()
   at Telerik.Blazor.Components.Grid.TelerikGridFilterHeaderBase`1.OnInit()
   at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync()

any help to point me in a direction would help.

Thanks

Richard

Hi,

I appreciate it's still under development so maybe what I ask is unavailable, but I have a couple of questions about the grid:

1. If I have a lot of columns can I set the size of the columns and have the grid display a horizontal scrollbar.

2. I'm having trouble getting sorting working with templated columns:

It doesn't seem to work at all when I just set the Items and when using the ReadItems method, which is ultimately what I want to do the sort descriptor is passed in but the sort descriptor member field is empty (the sort direction does contain a value). Do I need to set something on the column template as a sort value or something?

Thanks,
Nick

Hello,

I have edited the code below to remove a lot of the non-relevant parts. In summary I have a TelerikDropDownList within a TelerikGrid EditorTemplate within a TelerikWindow. When I click "Add" in the grid a NullReferenceException exception is thrown (full Exception text at the bottom of the post). If I comment out the DropDownList control completely, the exception is not thrown when I click "Add".

<TelerikWindow>
    <TelerikWindowContent>
        <TelerikGrid Data=@ScheduledJobs EditMode="inline">
            <TelerikGridToolBar>
                <TelerikGridCommandButton Command="Add" Icon="add"></TelerikGridCommandButton>
            </TelerikGridToolBar>
            <TelerikGridColumns>
                <TelerikGridColumn Field=@nameof(ScheduledJob.JobActionName) Title="Action">
                    <EditorTemplate>
                        @{
                            JobToEdit = context as ScheduledJob;
                            <TelerikDropDownList DefaultItem="@DefaultJobAction" Data="@JobActions" bind-Value=@JobToEdit.JobAction ValueField="@nameof(JobAction.Id)" TextField="@nameof(JobAction.Name)"></TelerikDropDownList>
                           }

...

@functions {

  protected List<JobAction> JobActions = <code to populate JobActions list>

  protected DefaultJobAction = JobActions[0];  // I have debugged - this assigns a non-null object as expected

  protected JobToEdit JobToEdit;  // has a field called JobAction of type JobAction

}

The full exception text is:

System.NullReferenceException: Object reference not set to an instance of an object. at string Telerik.Blazor.Common.TelerikSelectBase<TValue>.get_CurrentValueAsString() at void Telerik.Blazor.Components.DropDownList.TelerikDropDownList<TItem, TValue>.BuildRenderTree(RenderTreeBuilder builder) at Microsoft.AspNetCore.Components.ComponentBase()+(RenderTreeBuilder builder) => { } at void Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment) at void Microsoft.AspNetCore.Components.Rendering.Renderer.RenderInExistingBatch(RenderQueueEntry renderQueueEntry) at void Microsoft.AspNetCore.Components.Rendering.Renderer.ProcessRenderQueue()

I directly copy your example code from: https://demos.telerik.com/blazor-ui/grid/editing-incell into a server-side Blazor page using .Net Core 3 preview 5. Telerik UI for Blazor 0.5.0.

I run the app and the grid works perfectly apart from the "Add Employee" button. When I click it, it does nothing. No new blank row is added. Please note that the other grid command buttons work fine including "Delete" and "Edit".

Hi,

I'm trying to use the latest version (V1.1.0) of DropDownList with a GUID key, the original conversation is in this thread: https://www.telerik.com/forums/dropdownlist---run-code-when-select-item-changes.

My understanding is this should now work, but I'm having problems binding the current value. My code looks like this:

      <TelerikDropDownList Data="@_viewItems" TValue="Guid"
                             TextField="Name"
                             ValueField="Id"
                             bind-Value="@CurrentViewId" PopupHeight="120" />

    private List<NameAndId> _viewItems;

    public class NameAndId
    {
        public string Name { get; }
        public Guid Id { get; }

        public NameAndId(string name, Guid id)
        {
            Name = name;
            Id = id;
        }

        public override string ToString()
        {
            return Name;
        }
    }

    private Guid CurrentViewId
    {
        get => _currentViewId;
        set => _currentViewId = value;
    }

This gives me the following compiler error:

Severity    Code    Description    Project    File    Line    Suppression State
Error        The attribute names could not be inferred from bind attribute 'bind-Value'. Bind attributes should be of the form'bind', 'bind-value' or 'bind-value-change'    TestApp    C:\Source\TestApp.Blazor\TestApp.Blazor\Pages\View.razor    17    
Error    RZ9991    The attribute names could not be inferred from bind attribute 'bind-Value'. Bind attributes should be of the form'bind', 'bind-value' or 'bind-value-change'    TestApp  C:\Source\TestApp.Blazor\TestApp.Blazor\Pages\View.razor    17    

Thanks,

Nick.

Hi - all of the dropdownlist code examples show data binding to lists of non-scalar types. I.e. lists of objects.

My question is, can your dropdownlist bind to lists of scalar types? I.e:

<TelerikDropDownList Data="@MyList" bind-Value=@MyItem />

@functions {

protected List<string> MyList() = new List<string>();

protected string MyItem;

}

If so, do I need to provide the ValueField and TextField properties?