Problem after installing latest Radzen NuGet package

Radzen.Blazor Components
1

I’m having issues with a Visual Studio project after installing the latest (11.0.4) NuGet package.

Is anyone else having this issue? Here is one of the errors I’m seeing the console:

Error: The value 'Radzen.createDataGrid' is not a function.
at https://localhost:7239/_framework/blazor.web.js:1:510
at h.resolveInvocationHandler (https://localhost:7239/_framework/blazor.web.js:1:1428)
at S (https://localhost:7239/_framework/blazor.web.js:1:6447)
at b.processJSCall (https://localhost:7239/_framework/blazor.web.js:1:4440)
at b.beginInvokeJSFromDotNet (https://localhost:7239/_framework/blazor.web.js:1:4125)
at kn._invokeClientMethod (https://localhost:7239/_framework/blazor.web.js:1:69241)
at kn._processIncomingData (https://localhost:7239/_framework/blazor.web.js:1:66606)
at Bn.onreceive (https://localhost:7239/_framework/blazor.web.js:1:60257)
at WebSocket. (https://localhost:7239/_framework/blazor.web.js:1:84315)
at Microsoft.JSInterop.JSRuntime.InvokeAsync[TValue](Int64 targetInstanceId, String identifier, JSCallType callType, Object args)
at Radzen.Blazor.RadzenDataGrid`1.OnAfterRenderAsync(Boolean firstRender)
at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle, ComponentState owningComponentState)

2

I solved my own problem…with the help of Google AI.

I had to clear the browser cache. (Ctrl = F5)
I’m not sure what actually caused the initial issue but getting it cleared was a complete headache.

3

Hi @tmeehan,

Probably the JavaScript file is included without a version that would serve as a cache buster and avoid such problems. Check the getting started instructions:

<script src="_content/Radzen.Blazor/Radzen.Blazor.js?v=@(typeof(Radzen.Colors).Assembly.GetName().Version)"></script>

The v=@(typeof(Radzen.Colors).Assembly.GetName().Version) expression changes with every version and effectively prevents caching issues.

1 Like
Upgrading not happening
4

OK. That helped a little. The dropdowns are dropping down, but now they stay open and the dialog popups are causing errors:
blazor.server.js:1 [2026-07-07T19:10:36.146Z] Error: System.InvalidOperationException: Cannot provide a value for property 'TooltipService' on type 'Radzen.Blazor.RadzenChart'. There is no registered service of type 'Radzen.TooltipService'.

at Microsoft.AspNetCore.Components.ComponentFactory.<>c__DisplayClass9_0.g__Initialize|1(IServiceProvider serviceProvider, IComponent component)

at Microsoft.AspNetCore.Components.ComponentFactory.InstantiateComponent(IServiceProvider serviceProvider, Type componentType, IComponentRenderMode callerSpecifiedRenderMode, Nullable`1 parentComponentId)

at Microsoft.AspNetCore.Components.RenderTree.Renderer.InstantiateChildComponentOnFrame(RenderTreeFrame[] frames, Int32 frameIndex, Int32 parentComponentId)

at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InitializeNewSubtree(DiffContext& diffContext, Int32 frameIndex)

at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InsertNewFrame(DiffContext& diffContext, Int32 newFrameIndex)

at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& diffContext, Int32 oldStartIndex, Int32 oldEndIndexExcl, Int32 newStartIndex, Int32 newEndIndexExcl)

at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForFramesWithSameSequence(DiffContext& diffContext, Int32 oldFrameIndex, Int32 newFrameIndex)

at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& diffContext, Int32 oldStartIndex, Int32 oldEndIndexExcl, Int32 newStartIndex, Int32 newEndIndexExcl)

at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForFramesWithSameSequence(DiffContext& diffContext, Int32 oldFrameIndex, Int32 newFrameIndex)

at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& diffContext, Int32 oldStartIndex, Int32 oldEndIndexExcl, Int32 newStartIndex, Int32 newEndIndexExcl)

at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForFramesWithSameSequence(DiffContext& diffContext, Int32 oldFrameIndex, Int32 newFrameIndex)

at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& diffContext, Int32 oldStartIndex, Int32 oldEndIndexExcl, Int32 newStartIndex, Int32 newEndIndexExcl)

at Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment, Exception& renderFragmentException)

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

log @ blazor.server.js:1

blazor.server.js:1 [2026-07-07T19:10:36.149Z] Information: Connection disconnected.

2blazor.server.js:1 Uncaught Error: No interop methods are registered for renderer 1

at T (blazor.server.js:1:13739)

at blazor.server.js:1:13645

at D (blazor.server.js:1:13828)

at k (blazor.server.js:1:13619)

at P.dispatchGlobalEventToAllElements (blazor.server.js:1:16221)

at P.onGlobalEvent (blazor.server.js:1:15414)

4blazor.server.js:1 Uncaught Error: No interop methods are registered for renderer 1

at T (blazor.server.js:1:13739)

at blazor.server.js:1:13645

at D (blazor.server.js:1:13828)

at k (blazor.server.js:1:13619)

at P.dispatchGlobalEventToAllElements (blazor.server.js:1:16221)

at P.onGlobalEvent (blazor.server.js:1:15414)
5

Hi Joshua, this does not look like the same issue I was having.

6

I suggest checking the getting started instructions especially about registering the services e.g. builder.Services.AddRadzenComponents()

7

Hello. I meant to post this in my post. Sorry. In the end, I was missing the reference in Program.cs. This is not included in the version I previously had. Thank you