A.razor

 <A> 
    <B @bind-xyzInB = "@_xyzInA"><B>
 </A>
 
 @code {
 
  private FipsDetail? _xyzInA { get; set; }
  
 }
 
 

B.razor

<B> 
  <C @bind-xyzInC = "@xyzInB"></C>
</B> 

@code{ 

  [Parameter] public FipsDetail? xyzInB{ get; set; } 

} 

C.razor

<C></C>

@code{ 

[Parameter] public FipsDetail? xyzInC{ get; set; }
 
private async Task LoadData(FipsDetailQuery query) { 

  xyzInC= await FipsService.GetFipsDetail(query);            
  StateHasChanged(); 

  } 

}