the event sequence for page  [Answered]RSS

• • Reply
  panfeng77

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  10 Points

  26 Posts

  the event sequence for page

  Oct 11, 2019 04:17 AM|panfeng77|LINK

  Hi

  in rasor page ,what happens for page.Can you tell me the sequence for page 

  Ex:

   protected override async Task OnInitializedAsync()
      {
          watch = Stopwatch.StartNew();
          var uri = $"WeatherForecast?num={para.Num}";
          forecasts = await Http.GetJsonAsync<WeatherForecast[]>(uri);
          watch.Stop();
          wastTime = string.Format($"{watch.Elapsed.Hours}小时{watch.Elapsed.Minutes}分钟{watch.Elapsed.Seconds}秒");
      }
  
      protected override Task OnAfterRenderAsync(bool firstRender)
      {
          return base.OnAfterRenderAsync(firstRender);
      }
  
      protected override void OnInitialized()
      {
          base.OnInitialized();
      }
  
      protected override void OnAfterRender(bool firstRender)
      {
          base.OnAfterRender(firstRender);
      }
  
      protected override void BuildRenderTree(RenderTreeBuilder builder)
      {
          base.BuildRenderTree(builder);
      }
  
      protected override void OnParametersSet()
      {
          base.OnParametersSet();
      }
  
      protected override Task OnParametersSetAsync()
      {
          return base.OnParametersSetAsync();
      }
  
      protected override bool ShouldRender()
      {
          return base.ShouldRender();
      }
  
  the order for these events ?
  Thanks for your help

• • Reply
  Mikesdotnett...

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  Re: the event sequence for page

  Oct 11, 2019 09:37 AM|Mikesdotnetting|LINK

  OnInitialized happens first, followed by OnParameterSet then OnAfterRender. They all have async versions. Neither ShouldRender or BuildRenderTree are lifecycle events. 

  https://docs.microsoft.com/en-gb/aspnet/core/blazor/components?view=aspnetcore-3.0#lifecycle-methods

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