I'm getting error for dynamic Grid InCell editing. Error is displayed on editing before calling UpdateHandler. It is observed for adding new row or editing any row. 

Error: System.ArgumentException: Instance property 'x' is not defined for type 'System.Dynamic.ExpandoObject' (Parameter 'propertyName')

I was not getting this error In previous version 2.21.0 on edit of a dynamic field. Getting this error after updating to new 2.23.0 version without any code change.

If I add an await-ed call in the OnRowClick handler, then I cannot alter the grid state later in the code. It only works if the method is called again (e.g., a second click on the same row).

<AdminEdit>

This affects other Grid events too, for example, the PageChanged

</AdminEdit>

A workaround is to use synchronous code (remove the await call):

@inject IJSRuntime JsInterop

<TelerikGrid Data="@salesTeamMembers" OnRowClick="@OnRowClickHandler" @ref="@GridRef">
    <DetailTemplate>
        @{
            var employee = context as MainModel;
            <TelerikGrid Data="employee.Orders" Pageable="true" PageSize="5">
                <GridColumns>
                    <GridColumn Field="OrderId"></GridColumn>
                    <GridColumn Field="DealSize"></GridColumn>
                </GridColumns>
            </TelerikGrid>
        }
    </DetailTemplate>
    <GridColumns>
        <GridColumn Field="Id"></GridColumn>
        <GridColumn Field="Name"></GridColumn>
    </GridColumns>
</TelerikGrid>

@code {
    List<MainModel> salesTeamMembers { get; set; }
    TelerikGrid<MainModel> GridRef { get; set; }

    async Task OnRowClickHandler(GridRowClickEventArgs args) {
        // After adding this line, it now requires a double click when the InvokeAsync call uses "await"
         var width = JsInterop.InvokeAsync<int>("getWidth");


        var model = args.Item as MainModel;
        int index = salesTeamMembers.IndexOf(model);
        //todo: you may want to take paging into account for example, or use js interop to get the index of the row based on contents from it like id
        if (index > -1) {
            var state = GridRef.GetState();
            state.ExpandedRows = new List<int> { index };

            await GridRef.SetState(state);
        }

    }


    protected override void OnInitialized() {
        salesTeamMembers = GenerateData();
    }

    private List<MainModel> GenerateData() {
        List<MainModel> data = new List<MainModel>();
        for (int i = 0; i < 5; i++) {
            MainModel mdl = new MainModel { Id = i, Name = $"Name {i}" };
            mdl.Orders = Enumerable.Range(1, 15).Select(x => new DetailsModel { OrderId = x, DealSize = x ^ i }).ToList();
            data.Add(mdl);
        }
        return data;
    }

    public class MainModel {
        public int Id { get; set; }
        public string Name { get; set; }
        public List<DetailsModel> Orders { get; set; }
    }

    public class DetailsModel {
        public int OrderId { get; set; }
        public double DealSize { get; set; }
    }
}

Select one or more rows

Right click another of the rows (there is code in the OnContextMenu handler that changes the selected items to the currently clicked row)

<TelerikContextMenu @ref="@ContextMenuRef" Data="@MenuItems" OnClick="@((MenuItem item) => OnItemClick(item))"></TelerikContextMenu>

<TelerikGrid Data=@GridData
             @ref="Grid"
             SelectionMode="GridSelectionMode.Multiple"
             @bind-SelectedItems="@SelectedEmployees"
             @bind-Page="@CurrentPage"
             PageSize="@PageSize"
             OnRowContextMenu="OnContextMenu"
             Pageable="true">
    <GridColumns>
        <GridCheckboxColumn />
        <GridColumn Field=@nameof(Employee.EmployeeId) />
        <GridColumn Field=@nameof(Employee.Name) />
        <GridColumn Field=@nameof(Employee.Team) />
    </GridColumns>
</TelerikGrid>

@if (SelectedEmployees != null)
{
    <ul>
        @foreach (Employee employee in SelectedEmployees.OrderBy(e => e.EmployeeId))
        {
            <li>
                @employee.EmployeeId
            </li>
        }
    </ul>}

@code {
    public IEnumerable<Employee> SelectedEmployees { get; set; } = Enumerable.Empty<Employee>();
    TelerikContextMenu<MenuItem> ContextMenuRef { get; set; }
    TelerikGrid<Employee> Grid { get; set; }
    List<MenuItem> MenuItems { get; set; }
    int CurrentPage { get; set; } = 1;
    int PageSize { get; set; } = 5;

    //data binding and sample data
    public List<Employee> GridData { get; set; }

    protected override void OnInitialized()
    {
        GridData = new List<Employee>();
        for (int i = 0; i < 15; i++)
        {
            GridData.Add(new Employee()
            {
                EmployeeId = i,
                Name = "Employee " + i.ToString(),
                Team = "Team " + i % 3
            });
        }

        MenuItems = new List<MenuItem>()
    {
            new MenuItem(){ Text = "Delete", Icon = IconName.Delete, CommandName = "Delete"}
        };
    }

    protected async Task OnItemClick(MenuItem item)
    {
        if (item.Action != null)
        {
            item.Action.Invoke();
        }
        else
        {
            switch (item.CommandName)
            {
                case "Delete":
                    await Task.Delay(1); // do something

                    break;
            }
        }
    }

    protected async Task OnContextMenu(GridRowClickEventArgs args)
    {
        if (!(args.Item is Employee employee))
            return;

        SelectedEmployees = new List<Employee> { employee }; // this does not work

        if (args.EventArgs is MouseEventArgs mouseEventArgs)
        {
            await ContextMenuRef.ShowAsync(mouseEventArgs.ClientX, mouseEventArgs.ClientY);
        }
    }

    public class Employee
    {
        public int EmployeeId { get; set; }
        public string Name { get; set; }
        public string Team { get; set; }
    }

    public class MenuItem
    {
        public string Text { get; set; }
        public string Icon { get; set; }
        public Action Action { get; set; }
        public string CommandName { get; set; }
    }
}

*** Thread created by admin on customer behalf ***

The Class does not render on the topmost element so you can't properly set css rules like z-index to the context menu.

A workaround is to set a higher z-index to all animation containers with a rule like this:

    .k-animation-container {
        z-index: 987654;
    }

Since 2.23.0 there is something wrong with the z-index of the TelerikComboBox.

If a TelerikComboBox is used on a TelerikWindow, starting to type opens the dropdown behind the window and thus cannot be seen.

Clicking on the Dropdown Button of the ComboBox, the dropdown is opened and displayed correctly and after clicking on the Dropdown Button once, typing in the text field also displays the dropdown correctly.

It really bothers my users though that they cannot start typing right away so I had to revert to version 2.22.0 which does not have this error.

Note: Since I figured it's some kind of styling problem, I rebuild our custom theme using the ThemeBuilder but the error was still there after that.

When you move the mouse over the grid cells in this example, several tooltips can remain shown, especially if you move the mouse down so it goes through a tooltip when going towards the next row, and you move it quickly.

<div class="row">
    <TelerikGrid Data="@Items">
        <RowTemplate Context="sampleData">
            @{
                string detailLink = $"info/{sampleData.Id}";
                string className = $"screenshot-hover-{sampleData.Id}";
                string selector = $".{className}";
                <td title="@sampleData.Name" data-id="@sampleData.Id" class="@className">
                    <NavLink href="@detailLink">@sampleData.Name</NavLink>
                </td>
                <td title="@sampleData.Name" data-id="@sampleData.Id" class="@className">
                    <NavLink href="@detailLink">@sampleData.Name</NavLink>
                </td>
                <td title="@sampleData.Name" data-id="@sampleData.Id" class="@className">
                    <NavLink href="@detailLink">@sampleData.Name</NavLink>
                </td>
                <TelerikTooltip TargetSelector="@selector" ShowOn="@TooltipShowEvent.Hover" Position="@TooltipPosition.Bottom">
                    <Template Context="ttipContext">
                        @{
                            var dataAttributes = ttipContext.DataAttributes;
                            var title = ttipContext.Title;
                            if (title != null && dataAttributes.ContainsKey("id"))
                            {
                                <img src="images/@(dataAttributes["id"])" alt="@title" />
                                <p>@title</p>
                            }
                        }
                    </Template>
                </TelerikTooltip>
            }
        </RowTemplate>

        <GridColumns>
            <GridColumn Field="@(nameof(SampleData.Name))" />
            <GridColumn Field="@(nameof(SampleData.Address))" />
            <GridColumn Field="@(nameof(SampleData.PhoneNumber))" />
        </GridColumns>
    </TelerikGrid>
</div>

@code {
    class SampleData
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public string Address { get; set; }
        public string PhoneNumber { get; set; }
    }

    SampleData[] Items { get; set; }

    protected async override Task OnInitializedAsync()
    {
        const int sampleSize = 25;
        Items = new SampleData[sampleSize];
        for (int i = 0; i < sampleSize; i++)
        {
            Items[i] = new SampleData
            {
                Id = i,
                Name = $"{i}.SomeName",
                Address = $"{i}{i}{i}{i} Cherry Lane",
                PhoneNumber = $"1-512-{i % 100:00}4-6000",
            };

        }

        await Task.CompletedTask;
    }
}

Replication code:

@SelectedValue
<br />
<TelerikComboBox Data="@DdoData"
                 OnRead="@OnReadHandler"
                 Filterable="true"
                 ValueField="RecId"
                 TextField="DdoTitle"
                 Placeholder="Find what you seek by typing"
                 @bind-Value="@SelectedValue">
</TelerikComboBox>

@code{
    public int SelectedValue { get; set; } = 4;
    List<ddo> DdoData { get; set; }
    public string ddoCbType { get; set; } = "Default";
    int InitialId { get; set; }
    string currentText { get; set; } = "";

    protected override async Task OnInitializedAsync()
    {
        await ReadDdoData(ddoCbType, "");
        if (SelectedValue > 0)
        {
            InitialId = (int)SelectedValue;
            await ReadDdoData(ddoCbType, currentText);
        }
    }

    async Task OnReadHandler(ComboBoxReadEventArgs args)
    {
        if (args.Request.Filters.Count > 0)
        {
            Telerik.DataSource.FilterDescriptor filter = args.Request.Filters[0] as Telerik.DataSource.FilterDescriptor;
            currentText = filter.Value.ToString();
            await ReadDdoData(ddoCbType, currentText);
        }
        else
        {
            currentText = "";
            await ReadDdoData(ddoCbType, "");
        }
    }

    private async Task ReadDdoData(string ddoCbType, string currentText)
    {
        await Task.Delay(100);

        DdoData = new List<ddo>()
        {
                new ddo(){ RecId = 1, DdoTitle = "one"},
                new ddo(){ RecId = 2, DdoTitle = "two"},
                new ddo(){ RecId = 3, DdoTitle = "Three"},
                new ddo(){ RecId = 4, DdoTitle = "Four"},
                new ddo(){ RecId = 5, DdoTitle = "Five"}
            };

        //this does not help
        await InvokeAsync(StateHasChanged);
    }

    public class ddo
    {
        public int RecId { get; set; }
        public string DdoTitle { get; set; }
    }
}

I have a Multiselect as an editor in the Grid. When I click in the multiselect the popup with the choices stays hidden behind the window. 

<AdminEdit>

Workaround:

You can increase the z-index of the k-animation-container

<style>
    .k-animation-container {
        z-index: 15000;
    }
</style>


<TelerikGrid Data=@MyData EditMode="@GridEditMode.Popup" Pageable="true" Height="300px" OnUpdate="@UpdateHandler">
    <GridColumns>
        <GridColumn Field=@nameof(SampleData.ID) Editable="false" Title="ID" />
        <GridColumn Field=@nameof(SampleData.Name) Title="Name" />
        <GridColumn Field=@nameof(SampleData.Roles) Title="Position">
            <Template>
                @{
                    var item = context as SampleData;

                    @if (item.Roles.Any())
                    {
                        foreach (var role in item.Roles)
                        {
                            <span>@role</span>
                        }
                    }
                }
            </Template>
            <EditorTemplate>
                @{
                    CurrentlyEditedEmployee = context as SampleData;
                    <TelerikMultiSelect @bind-Value="@selectedValues" Data="@CurrentlyEditedEmployee.Roles"></TelerikMultiSelect>
                }
            </EditorTemplate>
        </GridColumn>
        <GridCommandColumn>
            <GridCommandButton Command="Save" Icon="save" ShowInEdit="true">Update</GridCommandButton>
            <GridCommandButton Command="Edit" Icon="edit">Edit</GridCommandButton>
        </GridCommandColumn>
    </GridColumns>
</TelerikGrid>

@code {
    List<SampleData> MyData { get; set; }
    List<string> Roles { get; set; }
    SampleData CurrentlyEditedEmployee { get; set; }

    private List<string> selectedValues { get; set; }

    public async Task UpdateHandler(GridCommandEventArgs args)
    {
        SampleData item = (SampleData)args.Item;

        // perform actual data source operations here through your service
        await MyService.Update(item);

        // update the local view-model data with the service data
        await GetGridData();
    }

    //in a real case, keep the models in dedicated locations, this is just an easy to copy and see example
    public class SampleData
    {
        public int ID { get; set; }
        public string Name { get; set; }
        public List<string> Roles { get; set; } = new List<string>() { "Test" };
    }

    async Task GetGridData()
    {
        MyData = await MyService.Read();
        Roles = await MyService.GetRoles();
    }

    protected override async Task OnInitializedAsync()
    {
        await GetGridData();
    }

    // the following static class mimics an actual data service that handles the actual data source
    // replace it with your actual service through the DI, this only mimics how the API can look like and works for this standalone page
    public static class MyService
    {
        private static List<SampleData> _data { get; set; } = new List<SampleData>();
        private static List<string> Roles = new List<string> { "Manager", "Employee", "Contractor" };

        public static async Task<List<SampleData>> Read()
        {
            if (_data.Count < 1)
            {
                for (int i = 1; i < 50; i++)
                {
                    _data.Add(new SampleData()
                    {
                        ID = i,
                        Name = "Name " + i.ToString()
                    });
                }
            }

            return await Task.FromResult(_data);
        }

        public static async Task<List<string>> GetRoles()
        {
            return await Task.FromResult(Roles);
        }

        public static async Task Update(SampleData itemToUpdate)
        {
            var index = _data.FindIndex(i => i.ID == itemToUpdate.ID);
            if (index != -1)
            {
                _data[index] = itemToUpdate;
            }
        }
    }
}

</AdminEdit>

Window border styling via css has no effect - no border shows at all - I don't need help, just reporting. Tried it on Edge, Chrome and Firefox

.MyClass { /* targets the entire popup element */

        border: 5px solid red;
    }
Microsoft Visual Studio Community 2019 Version 16.9.2
Progress® Telerik® UI for Blazor Extension - 2021.1.218.1
.NET Framework 4.8.04084

Hi,

In most of my projects I use the ObjectGraphDataAnnotationsValidator component for validating complex types; and I also use a lot of your components. I've noticed what I *think* might be a clash between this validator and some of your input components. I've built a simple (and crude) example but I think it demonstrates the problem.


In the example code we have a table with 2 cells - in both cells we have an EditForm and 10 TelerikTextArea components. The first cell's EditForm contains a ObjectGraphDataAnnotationsValidator instance and the 2nd cell doesn't. Hopefully when you try to reproduce you will notice a distinct difference in performance with the performance of the 2nd EditForm being great, while the 1st EditForm is quite laggy and gets worse the more items you add.


I'm wondering if there is a clash here between the ObjectGraphDataAnnotationsValidator and the input components or I'm using them incorrectly?


Thanks
Michael.

@page "/"

<table width="100%">
    <tr>
        <td width="50%">
            <h3>EditForm with ObjectGraphDataAnnotationsValidator</h3>
            <EditForm Model="Items">
                <ObjectGraphDataAnnotationsValidator />
                @foreach (var item in Items)
                {
                    <div style="display: flex">
                        <TelerikTextArea @bind-Value="item.TextValue" />

                        @if (Items.IndexOf(item) == (Items.Count - 1))
                        {
                            <TelerikButton OnClick="@(() => Items.Add(new DataItem()))">
                                Add
                            </TelerikButton>
                        }
                    </div>
                }
            </EditForm>
        </td>
        <td width="50%">
            <h3>EditForm without ObjectGraphDataAnnotationsValidator</h3>
            <EditForm Model="Items">
                @foreach (var item in Items)
                {
                    <div style="display: flex">
                        <TelerikTextArea @bind-Value="item.TextValue" />

                        @if (Items.IndexOf(item) == (Items.Count - 1))
                        {
                            <TelerikButton OnClick="@(() => Items.Add(new DataItem()))">
                                Add
                            </TelerikButton>
                        }
                    </div>
                }
            </EditForm>
        </td>
    </tr>
</table>

@code {
    protected List<DataItem> Items { get; set; }

    protected override void OnInitialized()
    {
        Items = new List<DataItem>();
        for (var i = 1; i <= 10; i++)
        {
            Items.Add(new DataItem { TextValue = $"This is item number {i}." });
        }
    }

    public class DataItem
    {
        public string TextValue { get; set; }
    }
}

When used in Bootstrap Grid the DropDownList popup is misaligned on the first open. On a second click, it is aligned.

This behavior is also valid for Combobox and Autocomplete.

Reproduction code:

<div class="box">
    <div class="row mt-3" style="align-items:center">
        <div class="col-12 col-lg-4">
            <span class="bold">ComboBox</span>
        </div>
        <div class="col">
            <TelerikComboBox Data="@myComboData" TextField="ComboTextField" ValueField="ComboValueField"
                             @bind-Value="selectedCombo" ClearButton="true" Filterable="true">
            </TelerikComboBox>
        </div>
    </div>

    <div class="row mt-3" style="align-items:center">
        <div class="col-12 col-lg-4">
            <span class="bold">DropDownList</span>
        </div>
        <div class="col">
            <TelerikDropDownList Data="@myDdlData" TextField="MyTextField" ValueField="MyValueField"
                                 @bind-Value="@selectedDropDown">
            </TelerikDropDownList>
        </div>
    </div>

    <div class="row mt-3" style="align-items:center">
        <div class="col-12 col-lg-4">
            <span class="bold">Autocomplete</span>
        </div>
        <div class="col">
            <TelerikAutoComplete Data="@Suggestions" @bind-Value="@AutoCompleteValue"
                                 ClearButton="true" />
        </div>
    </div>
</div>

@code {
    public int selectedDropDown { get; set; }
    public int selectedCombo { get; set; }
    public string AutoCompleteValue { get; set; }

    //ComboBox
    public class ComboModel
    {
        public int ComboValueField { get; set; }
        public string ComboTextField { get; set; }
    }

    IEnumerable<ComboModel> myComboData = Enumerable.Range(1, 20).Select(x => new ComboModel { ComboTextField = "item " + x, ComboValueField = x });

    //DropDownList
    public class MyDdlModel
    {
        public int MyValueField { get; set; }
        public string MyTextField { get; set; }
    }

    IEnumerable<MyDdlModel> myDdlData = Enumerable.Range(1, 20).Select(x => new MyDdlModel { MyTextField = "item " + x, MyValueField = x });

    //Autocomplete
    List<string> Suggestions { get; set; } = new List<string> {
        "Manager", "Developer", "QA", "Technical Writer", "Support Engineer", "Sales Agent", "Architect", "Designer"
    };
}

Installation gives an error dialog

1. Use the code from the incell editing docs (https://docs.telerik.com/blazor-ui/components/grid/editing/incell)and monitor the server console 
2. Edit a name (row 3 and onward)
3. Press Enter

I expect OnEdit to fire, but only OnUpdate fires

I am getting the following error with them *only* when loading my site on an iPhone, after the page had been previously loaded on a PC.

2020-11-02T16:19:51.547Z] Error: Microsoft.JSInterop.JSException: An exception occurred executing JS interop: The JSON value could not be converted to System.Double. Path: $ | LineNumber: 0 | BytePositionInLine: 4.. See InnerException for more details.
 ---> System.Text.Json.JsonException: The JSON value could not be converted to System.Double. Path: $ | LineNumber: 0 | BytePositionInLine: 4.
 ---> System.InvalidOperationException: Cannot get the value of a token type 'Null' as a number.
   at System.Text.Json.Utf8JsonReader.TryGetDouble(Double& value)
   at System.Text.Json.Utf8JsonReader.GetDouble()
   at System.Text.Json.Serialization.Converters.JsonConverterDouble.Read(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options)
   at System.Text.Json.JsonPropertyInfoNotNullable`4.OnRead(ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.JsonSerializer.HandleNull(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.JsonSerializer.ReadCore(JsonSerializerOptions options, Utf8JsonReader& reader, ReadStack& readStack)
   --- End of inner exception stack trace ---
   at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& readStack, Utf8JsonReader& reader, Exception ex)
   at System.Text.Json.JsonSerializer.ReadCore(JsonSerializerOptions options, Utf8JsonReader& reader, ReadStack& readStack)
   at System.Text.Json.JsonSerializer.ReadValueCore(JsonSerializerOptions options, Utf8JsonReader& reader, ReadStack& readStack)
   at System.Text.Json.JsonSerializer.ReadValueCore(Utf8JsonReader& reader, Type returnType, JsonSerializerOptions options)
   at System.Text.Json.JsonSerializer.Deserialize(Utf8JsonReader& reader, Type returnType, JsonSerializerOptions options)
   at Microsoft.JSInterop.JSRuntime.EndInvokeJS(Int64 taskId, Boolean succeeded, Utf8JsonReader& jsonReader)
   --- End of inner exception stack trace ---
   at Microsoft.JSInterop.JSRuntime.InvokeWithDefaultCancellation[T](String identifier, Object[] args)
   at Telerik.Blazor.Components.TelerikTooltip.OnAfterRenderAsync(Boolean firstRender)

When you resize grid columns the column width does not follow the mouse. This occurs in your demo:

https://demos.telerik.com/blazor-ui/grid/column-resizing

Make a column wider or narrower and the column width does not stay in line with where the mouse is.

Create the WebAssembly CRUD example from the New Project Wizard and go to the Form page.

Type a year in the date picker. Do not remove the focus and type another year. After doing this a few times the input visibly lags and the form becomes slow.

---

ADMIN EDIT

A potential workaround could be to disable the pointer events so that the users will have a harder time focusing the input so they are more likely to use the drodown to choose dates:

   .k-datepicker .k-dateinput input {
        pointer-events: none;
    }

<TelerikDatePicker Value="@person.StartDate"
                   OnChange="@( (object dt) => person.StartDate = (DateTime)dt )"
                   ValueExpression="@( () => person.StartDate )"
                   Width="100%" Id="StartDateDP">
</TelerikDatePicker>

---