Unable to Drag&Drop Built-in InputNumber

[yoshi1220]

I couldn't Drag&Drop InputNumber and bind property. Always Error occurs.

System.InvalidOperationException: InputNumber requires a cascading parameter of type EditContext. For example, you can use InputNumber inside an EditForm.
at Microsoft.AspNetCore.Components.Forms.InputBase1.SetParametersAsync(ParameterView parameters) at Microsoft.AspNetCore.Components.Rendering.ComponentState.SupplyCombinedParameters(ParameterView directAndCascadingParameters) --- End of stack trace from previous location --- at Radzen.Server.RemoteRenderer.HandleException(Exception exception) in /Users/korchev/github/radzen-next/Radzen.Server/RemoteRenderer.cs:line 82 at Microsoft.AspNetCore.Components.RenderTree.Renderer.HandleExceptionViaErrorBoundary(Exception error, ComponentState errorSourceOrNull) at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InitializeNewComponentFrame(DiffContext& diffContext, Int32 frameIndex) 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.ComputeDiff(Renderer renderer, RenderBatchBuilder batchBuilder, Int32 componentId, ArrayRange1 oldTree, ArrayRange`1 newTree)
at Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment, Exception& renderFragmentException)
at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue()
--- End of stack trace from previous location ---
at Radzen.Server.RemoteRenderer.HandleException(Exception exception) in /Users/korchev/github/radzen-next/Radzen.Server/RemoteRenderer.cs:line 82
at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue()
at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessPendingRender()
at Microsoft.AspNetCore.Components.RenderTree.Renderer.AddToRenderQueue(Int32 componentId, RenderFragment renderFragment)
at Microsoft.AspNetCore.Components.RenderHandle.Render(RenderFragment renderFragment)
at Radzen.Server.Router.OnRouteChanged(Object sender, RouteChangedEventArgs e) in /Users/korchev/github/radzen-next/Radzen.Server/Router.cs:line 57
at Radzen.Server.RouterService.Route(Type component, Type defaultLayout) in /Users/korchev/github/radzen-next/Radzen.Server/RouterService.cs:line 19
at Radzen.Server.CircuitHost.AddComponent(Type layout, Type page) in /Users/korchev/github/radzen-next/Radzen.Server/CircuitHost.cs:line 34
at Radzen.Server.ProjectServer.Render(String fileName, String source) in /Users/korchev/github/radzen-next/Radzen.Server/ProjectServer.cs:line 411
at Radzen.Server.ProgramController.Render(RenderRequest request) in /Users/korchev/github/radzen-next/Radzen.Server/ProgramController.cs:line 325

[akorchev]

InputNumber should be put inside EditForm. Does it work if you try that?

[yoshi1220]

Thanks, Atanas.
Got it. You're right.
It would be more better if you could display a warning message for us when we try to place a control without using EditForm.

[akorchev]

I wish that were possible. The InputNumber component will just throw an exception during rendering if not inside an EditForm.