blazor why CaptureUnmatchedValues not works as expected?-CodePudding

so im building some wraper around select list

lets consider basic example DictListComponent.razor

 @using System.Linq.Expressions
 @typeparam T

 <MudSelect T="T" @bind-Value="Value" For="@For" AnchorOrigin="Origin.BottomCenter">
    <MudSelectItem T="int?" Value="null"> </MudSelectItem>
    <MudSelectItem T="int?" Value="1">1</MudSelectItem>
    <MudSelectItem T="int?" Value="2">2</MudSelectItem>
</MudSelect>

usage would be

 <DictMudSelectComponent  @bind-Value="@model.dict1"  For="@(() => @model.dict1)" ></DictMudSelectComponent>

this is fine

then if i want to change to pass this AnchorOrigin from parrent like

usage would be:

<DictMudSelectComponent  @bind-Value="@model.dict1"  For="@(() => @model.dict1)"  AnchorOrigin="Origin.BottomCenter"></DictMudSelectComponent>

then in DictListComponent.razor i add

 <MudSelect T="T" @bind-Value="Value" For="@For" @attributes=AllOtherAttributes>
    <MudSelectItem T="int?" Value="null"> </MudSelectItem>
    <MudSelectItem T="int?" Value="1">1</MudSelectItem>
    <MudSelectItem T="int?" Value="2">2</MudSelectItem>
</MudSelect>

@code
{
 [Parameter(CaptureUnmatchedValues = true)]
 public Dictionary<string, object> AllOtherAttributes { get; set; } = new(); 
}

then in runtime i get

Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
      Unhandled exception rendering component: Unable to set property 'AnchorOrigin' on object of type 'MudBlazor.MudSelect`1[[System.Int32, System.Private.CoreLib, Version=6.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]]'. The error was: Specified cast is not valid.
System.InvalidOperationException: Unable to set property 'AnchorOrigin' on object of type 'MudBlazor.MudSelect`1[[System.Int32, System.Private.CoreLib, Version=6.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]]'. The error was: Specified cast is not valid.
 ---> System.InvalidCastException: Specified cast is not valid.
   at Microsoft.AspNetCore.Components.Reflection.PropertySetter.CallPropertySetter[MudSelect`1,Origin](Action`2 setter, Object target, Object value)
   at Microsoft.AspNetCore.Components.Reflection.PropertySetter.SetValue(Object target, Object value)
   at Microsoft.AspNetCore.Components.Reflection.ComponentProperties.<SetProperties>g__SetProperty|3_0(Object target, PropertySetter writer, String parameterName, Object value)
   --- End of inner exception stack trace ---
   at Microsoft.AspNetCore.Components.Reflection.ComponentProperties.<SetProperties>g__SetProperty|3_0(Object target, PropertySetter writer, String parameterName, Object value)
   at Microsoft.AspNetCore.Components.Reflection.ComponentProperties.SetProperties(ParameterView& parameters, Object target)
   at Microsoft.AspNetCore.Components.ParameterView.SetParameterProperties(Object target)
   at Microsoft.AspNetCore.Components.ComponentBase.SetParametersAsync(ParameterView parameters)
   at MudBlazor.MudBaseInput`1[[System.Int32, System.Private.CoreLib, Version=6.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].<>n__1(ParameterView parameters)
   at MudBlazor.MudBaseInput`1.<SetParametersAsync>d__177[[System.Int32, System.Private.CoreLib, Version=6.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext()

why this does not work ? what am i missing here? thanks andd regards !

CodePudding user response：

Try: AnchorOrigin="@(Origin.BottomCenter)"

because I think that without the @ it is just passed as a string.