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MudCodeInput crash if rendered dynamically after the initial render #625

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Description

@patgoull
  • .net 10
  • Blazor Web App InteractiveWebAssembly with Prerendering
  • MudBlazor 9.4.0
  • CodeBeam.MudBlazor.Extensions 9.0.5

If I toggle the render of the MudCodeInput after the initial rendering, it crash everytime.

Razor
Image

Razor.cs
Image

As soon as I toggle the MudSwitch, I get this error:

System.InvalidOperationException - The render handle is not yet assigned.
URL: https://localhost:7180/
StackTrace: at Microsoft.AspNetCore.Components.RenderHandle.ThrowNotInitialized()
at Microsoft.AspNetCore.Components.RenderHandle.Render(RenderFragment renderFragment)
at Microsoft.AspNetCore.Components.ComponentBase.StateHasChanged()
at MudBlazor.MudFormComponent2.<ValidateValue>d__84[[System.String, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.String, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext() at MudBlazor.MudBaseInput1.d__205[[System.String, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext()
at MudBlazor.MudFormComponent2.<<BeginValidateAsync>b__82_0>d[[System.String, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.String, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext() at MudBlazor.MudBaseInput1.d__195[[System.String, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext()
at MudBlazor.MudBaseInput1.<SetTextAndUpdateValueAsync>d__218[[System.String, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext() at MudExtensions.MudTextFieldExtended1.d__39[[System.String, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext()
at MudExtensions.MudCodeInput1.<SetValueFromOutside>d__69[[System.String, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext() at MudExtensions.MudCodeInput1.d__3[[System.String, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext()
at MudBlazor.State.ParameterChangeHandlerUtility.g__InvokeCore|2_0(HandlerCollection handlerCollection)
at MudBlazor.State.ParameterContainer.SetParametersWithHandlersAsync(Func`2 baseSetParametersAsync, ParameterView parameters)

Activity

  1. mckaragoz commented on May 3, 2026

    @mckaragoz
    Contributor

    Thanks, MudCodeInput was crashed when initialized with value. We fixed it, coming with next release.

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