If I pass XField parameters with a "null" value, it throws "ArgumentNullException: Value cannot be null. (Parameter 'name')" because it thinks the value is set, but apparently it does check if it's "null" before trying to "GetProperty".

Example, if any of these XField properties are null, it will throw the Exception

<TelerikTreeList Data="@Data"
                 IdField="@IdField"
                 ParentIdField="@ParentIdField"
                 HasChildrenField="@HasChildrenField"
                 ItemsField="@ItemsField">...</TelerikTreeList>

There should be a null check to ignore the use of that property in case it's null, otherwise, my code will need to be something like

@if (HasChildrenField != null && ItemsField != null)
{
    <TelerikTreeList Data="@Data"
                     IdField="@IdField"
                     ParentIdField="@ParentIdField"
                     HasChildrenField="@HasChildrenField"
                     ItemsField="@ItemsField">...</TelerikTreeList>
}
else if (HasChildrenField != null)
{
    <TelerikTreeList Data="@Data"
                     IdField="@IdField"
                     ParentIdField="@ParentIdField"
                     HasChildrenField="@HasChildrenField">...</TelerikTreeList>
}
else if (ItemsField != null)
{
    <TelerikTreeList Data="@Data"
                     IdField="@IdField"
                     ParentIdField="@ParentIdField"
                     ItemsField="@ItemsField">...</TelerikTreeList>
}

else

{

    <TelerikTreeList Data="@Data"
                     IdField="@IdField"
                     ParentIdField="@ParentIdField">...</TelerikTreeList>

}

Which isn't good.

At least "HasChildrenField" and "ItemsField" should have that check because it isn't a required parameter to have property for the TelerikTreeList  to work.

Error Stack

ArgumentNullException: Value cannot be null. (Parameter 'name')

• System.Type.GetProperty(string name, BindingFlags bindingAttr)

• System.Type.GetProperty(string name)

• Telerik.Blazor.Extensions.ReflectionExtensions.GetPropertyValue(object target, string propertyName)

• Telerik.Blazor.Data.TelerikTreeListDataSource<TItem>.CreateTreeListItem(TItem item, IEnumerable<TreeListItem<TItem>> childItems)

• Telerik.Blazor.Data.TelerikTreeListDataSource<TItem>.GetItems(IEnumerable<TItem> data)

• Telerik.Blazor.Data.TelerikTreeListDataSource<TItem>.BuildTree(IEnumerable<TItem> sourceData)

• Telerik.Blazor.Data.TelerikTreeListDataSource<TItem>.InitData(IEnumerable<TItem> sourceData)

• Telerik.Blazor.Data.TelerikTreeListDataSource<TItem>.ProcessData(IEnumerable data)

• Telerik.Blazor.Components.Common.DataBoundComponent<TItem>.ProcessDataInternal()

• Telerik.Blazor.Components.Common.DataBoundComponent<TItem>.OnParametersSetAsync()

• Telerik.Blazor.Components.TelerikTreeList<TItem>.<>n__0()

• Telerik.Blazor.Components.TelerikTreeList<TItem>.OnParametersSetAsync()

• Microsoft.AspNetCore.Components.ComponentBase.CallStateHasChangedOnAsyncCompletion(Task task)

• Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync()

• Microsoft.AspNetCore.Components.Rendering.HtmlRenderer.HandleException(Exception exception)

• Microsoft.AspNetCore.Components.RenderTree.Renderer.AddToPendingTasks(Task task)

• Microsoft.AspNetCore.Components.Rendering.ComponentState.SetDirectParameters(ParameterView parameters)

• Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InitializeNewComponentFrame(ref DiffContext diffContext, int frameIndex)

• Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InitializeNewSubtree(ref DiffContext diffContext, int frameIndex)

• Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InsertNewFrame(ref DiffContext diffContext, int newFrameIndex)

• Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(ref DiffContext diffContext, int oldStartIndex, int oldEndIndexExcl, int newStartIndex, int newEndIndexExcl)

• Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.ComputeDiff(Renderer renderer, RenderBatchBuilder batchBuilder, int componentId, ArrayRange<RenderTreeFrame> oldTree, ArrayRange<RenderTreeFrame> newTree)

• Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment)

• Microsoft.AspNetCore.Components.RenderTree.Renderer.RenderInExistingBatch(RenderQueueEntry renderQueueEntry)

• Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue()

• Microsoft.AspNetCore.Components.Rendering.HtmlRenderer.HandleException(Exception exception)

• Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue()

• Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessPendingRender()

• Microsoft.AspNetCore.Components.RenderTree.Renderer.AddToRenderQueue(int componentId, RenderFragment renderFragment)

• Microsoft.AspNetCore.Components.ComponentBase.StateHasChanged()

• Microsoft.AspNetCore.Components.ComponentBase.CallOnParametersSetAsync()

• Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync()

• Microsoft.AspNetCore.Components.Rendering.HtmlRenderer.HandleException(Exception exception)

• Microsoft.AspNetCore.Components.RenderTree.Renderer.AddToPendingTasks(Task task)

• Microsoft.AspNetCore.Components.Rendering.ComponentState.SetDirectParameters(ParameterView parameters)

• Microsoft.AspNetCore.Components.RenderTree.Renderer.RenderRootComponentAsync(int componentId, ParameterView initialParameters)

• Microsoft.AspNetCore.Components.Rendering.HtmlRenderer.CreateInitialRenderAsync(Type componentType, ParameterView initialParameters)

• Microsoft.AspNetCore.Components.Rendering.HtmlRenderer.RenderComponentAsync(Type componentType, ParameterView initialParameters)

• Microsoft.AspNetCore.Components.Rendering.RendererSynchronizationContext+<>c__11<TResult>+<<InvokeAsync>b__11_0>d.MoveNext()

• Microsoft.AspNetCore.Mvc.ViewFeatures.StaticComponentRenderer.PrerenderComponentAsync(ParameterView parameters, HttpContext httpContext, Type componentType)

• Microsoft.AspNetCore.Mvc.ViewFeatures.ComponentRenderer.PrerenderedServerComponentAsync(HttpContext context, ServerComponentInvocationSequence invocationId, Type type, ParameterView parametersCollection)

• Microsoft.AspNetCore.Mvc.ViewFeatures.ComponentRenderer.RenderComponentAsync(ViewContext viewContext, Type componentType, RenderMode renderMode, object parameters)

• Microsoft.AspNetCore.Mvc.TagHelpers.ComponentTagHelper.ProcessAsync(TagHelperContext context, TagHelperOutput output)

• Microsoft.AspNetCore.Razor.Runtime.TagHelpers.TagHelperRunner.<RunAsync>g__Awaited|0_0(Task task, TagHelperExecutionContext executionContext, int i, int count)