FileEdit and FilePicker Throw Exceptions with .Net 7 and ABP 7.0.0-rc.2 #4127

DWaterfield created 2 years ago

Hang then Exception thrown with Blazor (Blazorise) FileEdit and FilePicker controls

ABP Framework version: 7.0.0-rc.2
UI type: Blazor-Server
DB provider: EF Core
Tiered (MVC) or Identity Server Separated (Angular): yes
Exception message and stack trace: 2022-11-28 10:49:33.059 +00:00 [ERR] Unhandled exception in circuit '95WDlnCZhdm60L5gxJEcLEXfawZQRcSbNWf878BV7qg'. System.TimeoutException: Did not receive any data in the allotted time. at System.IO.Pipelines.Pipe.GetReadResult(ReadResult& result) at System.IO.Pipelines.Pipe.GetReadAsyncResult() at System.IO.Pipelines.PipeReaderStream.ReadAsyncInternal(Memory`1 buffer, CancellationToken cancellationToken)
Steps to reproduce the issue:

abp new BookStoreV7 -ui blazor-server --preview
build the Solution and run the DbMigrator project
Switch the Visual Studio from IISExpress to e.g. BookStoreV7.Blazor via the dropdown (next to 'Debug', 'AnyCpu' and 'BookStoreV7.Blazor' controls
Add in a FileEdit control to Index.razor (FilePicker is also affected) e.g.

&lt;Field&gt;
    &lt;FileEdit Changed=&quot;OnFileUpload&quot; /&gt;
&lt;/Field&gt;

Add a method in the code behind e.g.

using Blazorise;
using System.IO;
using System.Threading.Tasks;
using System;

namespace BookStoreV7.Blazor.Pages;

public partial class Index
{
    async Task OnFileUpload(FileChangedEventArgs e)
    {
        try
        {
            if (e.Files.Length > 0)
            {
                var file = e.Files[0];

                using var memoryStream = new MemoryStream();
                // Next statement hangs, then throws exception
                await file.OpenReadStream(int.MaxValue).CopyToAsync(memoryStream);
            }
        }
        catch (Exception ex)
        {
            //Console.WriteLine(ex.Message);
        }
        finally
        {
            this.StateHasChanged();
        }
    }
}

Set the startup project to the web one e.g. BookStoreV7.Blazor and run it
Click on the "Choose file" control, select a file and click ok
The app will hang then throw an exception on the statement await file.OpenReadStream(int.MaxValue).CopyToAsync(memoryStream);

I can confirm that the FileEdit (and FilePicker) control works in a .Net 7, non ABP Blazor Server app i.e. adding Blazorise to it as detailed here: Blazorise Quick Start Guid It seems to be related to the underlying FileEntry.OpenReadStream() when used in an ABP 7.0.0-rc.2 project.

Images Stack Trace

at System.IO.Pipelines.Pipe.GetReadResult(ReadResult& result) at System.IO.Pipelines.Pipe.GetReadAsyncResult() at System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable`1.ConfiguredValueTaskAwaiter.GetResult() at System.IO.Pipelines.PipeReaderStream.<ReadAsyncInternal>d__30.MoveNext() at System.Threading.Tasks.ValueTask`1.get_Result() at System.Runtime.CompilerServices.ValueTaskAwaiter`1.GetResult() at Microsoft.AspNetCore.Components.Server.Circuits.RemoteJSDataStream.<ReadAsync>d__36.MoveNext() at System.Threading.Tasks.ValueTask`1.get_Result() at System.Runtime.CompilerServices.ValueTaskAwaiter`1.GetResult() at Blazorise.RemoteFileEntryStream.<CopyFileDataIntoBuffer>d__13.MoveNext() at System.Threading.Tasks.ValueTask`1.get_Result() at System.Runtime.CompilerServices.ValueTaskAwaiter`1.GetResult() at Blazorise.RemoteFileEntryStream.<ReadAsync>d__15.MoveNext() at System.IO.Stream.<<CopyToAsync>g__Core|27_0>d.MoveNext() at BookStoreV7.Blazor.Pages.Index.<OnFileUpload>d__0.MoveNext() in C:\Users\Moor Deybe\source\My Stuff\ABPStuff\ABPV7-BookStore\src\BookStoreV7.Blazor\Pages\Index.razor.cs:line 20

3 Answer(s)