Why OnInitializedAsync Invoke 2 time

[NabaviFard-Mahdi]

Why OnInitializedAsync Invoke 2 time
and GridItemProvider Invoke 3 Time

 protected override async Task OnInitializedAsync()
 {
     Debug.WriteLine("OnInitializedAsync");
     if (_dataGrid is null)
     {
         SelectedItems = new List<CustomerDto>();
     }
     else
     {
         SelectedItems = _dataGrid!.Items!.Where(p => p.Selected).ToList();
     }

     _gridItemProvider = GridItemProvider;
 }

 private async ValueTask<GridItemsProviderResult<CustomerDto>> GridItemProvider(GridItemsProviderRequest<CustomerDto> request)
 {
     Debug.WriteLine("Start Call GridItemProvider");
     if (!string.IsNullOrWhiteSpace(_nameFilter))
     {
         _filter = dto => dto.Name.Contains(_nameFilter) || dto.Code.ToString().Contains(_nameFilter) || dto.Description.Contains(_nameFilter);
     }

     var sort = new Dictionary<string, AppSortOrder>();
     foreach (var sortByProperty in request.GetSortByProperties())
     {
         sort.Add(sortByProperty.PropertyName, sortByProperty.Direction == SortDirection.Auto
             ? AppSortOrder.UnSet
             : sortByProperty.Direction == SortDirection.Ascending
                 ? AppSortOrder.Ascending
                 : AppSortOrder.Descending);
     }

     var result = await Mediator!.Send(new CustomerGetAllExactRequest
     {
         Skip = request.StartIndex,
         Take = request.Count ?? 1,
         OrderBy = sort,
         Filter = _filter,
         CalcTotal = true
     });

     if (!result.IsSuccess) return new GridItemsProviderResult<CustomerDto>();
     for (var index = 0; index < result.Data!.Count; index++)
     {
         var customerDto = result.Data![index];
         customerDto.RowIndex = request.StartIndex + index + 1;
     }

     //_numResults = 0;
     //_numResults = result.TotalCount;
     Debug.WriteLine("End Call GridItemProvider");
     return GridItemsProviderResult.From(result.Data!, result.TotalCount);
 }

<FluentCard MinimalStyle="true" Width="100%" Height="100%">
    <div class="search" style="width: 100%">

        <FluentToolbar id="toolbar-fluent-components" Style="width: 100%">
            <FluentButton Color="Color.Accent" Title="@AppStringResource.CustomerStrings.CreateCustomerPageTitle" Appearance="Appearance.Neutral" IconStart="@(new Size20.News())" OnClick="OnNewClick">@AppStringResource.New</FluentButton>
            <FluentSearch Autofocus=true
                          @bind-Value=_nameFilter
                          @oninput="HandleFilter"
                          @bind-Value:after="HandleClearFilter"
                          Placeholder="@AppStringResource.Search"
                          AutoComplete="true"
                          Immediate="true"
                          ImmediateDelay="250"
                          Maxlength="100"
                          Minlength="2"/>
        </FluentToolbar>
    </div>
    <FluentDataGrid TGridItem="CustomerDto"
                    @ref="_dataGrid"
                    Virtualize="true"
                    ResizableColumns="false"
                    ColumnResizeLabels="@UiHelper.ColumnResizeLabels"
                    ColumnSortLabels="@UiHelper.ColumnSortLabels"
                    ItemKey="dto => { return dto.Id; }"
                    ShowHover="true"
                    GenerateHeader="GenerateHeaderOption.Sticky"
                    ItemsProvider="_gridItemProvider"
                    ItemSize="46"
                    Class="fluentDataGrid">
        <ChildContent>

            <PropertyColumn Property="@(p => p.RowIndex)" Width="7rem" Format="N0"/>
            <PropertyColumn Property="@(p => p.Name)" Sortable="true" Filtered="true"IsDefaultSortColumn="true" InitialSortDirection="SortDirection.Ascending"/>
            <PropertyColumn Property="@(p => p.Code)" Sortable="true" Filtered="true"/>
            <PropertyColumn Property="@(p => p.Credit)" Sortable="true" Filtered="true"/>
            <PropertyColumn Property="@(p => p.UsedCredit)" Sortable="true" Filtered="true"/>
            <PropertyColumn Property="@(p => p.RemainingCredit)" Sortable="true" Filtered="true"/>
            <TemplateColumn Title="@AppStringResource.CustomerStrings.CreditThresholdLimitPercentage" Sortable="true" Filtered="true"  SortBy="@sortByCreditThresholdLimitPercentage" >
                <FluentLabel>@( $"{context.CreditThresholdLimitPercentage}%")</FluentLabel>
            </TemplateColumn>
            <PropertyColumn Property="@(p => p.PhoneNumber)" Sortable="true" Filtered="true"/>
            <PropertyColumn Property="@(p => p.Address)" Sortable="true" Filtered="true"/>
            <PropertyColumn Property="@(p => p.Description)" Sortable="true" Filtered="true"/>

            <TemplateColumn Title="@AppStringResource.Operations" Align="@Align.Center" Width="10rem">
                <FluentButton Title="@AppStringResource.UpdateTooltip" IconEnd="@(new Size16.Edit().WithColor(Color.Info))" OnClick="async () => { await OnUpdateAsync(context); }"/>
                <FluentButton Title="@AppStringResource.Delete" IconEnd="@(new Size16.Delete().WithColor(Color.Error))" OnClick="async () => { await OnDeleteAsync(context.Id); }"/>
            </TemplateColumn>

        </ChildContent>
        <EmptyContent>
            <FluentIcon Value="@(new Size24.Crown())" Color="@Color.Accent"/>&nbsp; @AppStringResource.NoRecords
        </EmptyContent>
        <LoadingContent>
            <FluentStack Orientation="Orientation.Vertical" HorizontalAlignment="HorizontalAlignment.Center">
                @AppStringResource.Loading<br/>
                <FluentProgress Width="240px"/>
            </FluentStack>
        </LoadingContent>
    </FluentDataGrid>
    <div style="margin-top: 0.5rem">
        <p> @UiHelper.GetFooterCountSummary(_numResults ?? 0)</p>
    </div>
</FluentCard>

OnInitializedAsync
Start Call GridItemProvider
Microsoft.EntityFrameworkCore.Database.Command: Information: Executed DbCommand (0ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
SELECT COUNT()
FROM [Customers] AS [c]
Microsoft.EntityFrameworkCore.Database.Command: Information: Executed DbCommand (3ms) [Parameters=[@__p_0='?' (DbType = Int32), @__p_1='?' (DbType = Int32)], CommandType='Text', CommandTimeout='30']
SELECT [c].[Id], [c].[Name], [c].[Code], [c].[CreditThresholdLimitPercentage], [c].[PhoneNumber], [c].[Address], [c].[Credit], [c].[RemainingCredit], [c].[UsedCredit], [c].[Description]
FROM [Customers] AS [c]
ORDER BY [c].[Name]
OFFSET @__p_0 ROWS FETCH NEXT @__p_1 ROWS ONLY
End Call GridItemProvider
OnInitializedAsync
Start Call GridItemProvider
Microsoft.EntityFrameworkCore.Database.Command: Information: Executed DbCommand (1ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
SELECT COUNT()
FROM [Customers] AS [c]
Microsoft.EntityFrameworkCore.Database.Command: Information: Executed DbCommand (1ms) [Parameters=[@__p_0='?' (DbType = Int32), @__p_1='?' (DbType = Int32)], CommandType='Text', CommandTimeout='30']
SELECT [c].[Id], [c].[Name], [c].[Code], [c].[CreditThresholdLimitPercentage], [c].[PhoneNumber], [c].[Address], [c].[Credit], [c].[RemainingCredit], [c].[UsedCredit], [c].[Description]
FROM [Customers] AS [c]
ORDER BY [c].[Name]
OFFSET @__p_0 ROWS FETCH NEXT @__p_1 ROWS ONLY
End Call GridItemProvider
Start Call GridItemProvider
Microsoft.EntityFrameworkCore.Database.Command: Information: Executed DbCommand (0ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
SELECT COUNT(*)
FROM [Customers] AS [c]
Microsoft.EntityFrameworkCore.Database.Command: Information: Executed DbCommand (0ms) [Parameters=[@__p_0='?' (DbType = Int32), @__p_1='?' (DbType = Int32)], CommandType='Text', CommandTimeout='30']
SELECT [c].[Id], [c].[Name], [c].[Code], [c].[CreditThresholdLimitPercentage], [c].[PhoneNumber], [c].[Address], [c].[Credit], [c].[RemainingCredit], [c].[UsedCredit], [c].[Description]
FROM [Customers] AS [c]
ORDER BY [c].[Name]
OFFSET @__p_0 ROWS FETCH NEXT @__p_1 ROWS ONLY
End Call GridItemProvider

[vnbaaij]

Hi, Please see comments and discussions in #1514. #1982 and #2057

If server, than it might just be a case of prerendering taking place and the method is called twice because of that

[NabaviFard-Mahdi]

thanks. solve this by condition in OnInitializedAsync

 protected override async Task OnInitializedAsync()
 {
     if (RendererInfo.Name != "Static")
     {

         _gridItemProvider = GridItemProvider;
     }
 }