A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
HttpContext is null throwing error i don't logged in
Prathamesh Shende
551
Reputation points
I had project .net 8 blazor server rendering which using asp.net identity.
the login.razor page as pre defined template and code from microsoft template. I update the framework to .net 10 and now anywhere in code HttpContext is defined it is throwing error
warn: Microsoft.AspNetCore.Components.Server.Circuits.RemoteRenderer[100]
Unhandled exception rendering component: Object reference not set to an instance of an object.
System.NullReferenceException: Object reference not set to an instance of an object.
at Hoot.Components.Account.Pages.Login.OnInitializedAsync() in D:\Projects\Labs\Hoot\src\Hoot\Components\Account\Pages\Login.razor:line 85
at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync()
fail: Microsoft.AspNetCore.Components.Server.Circuits.CircuitHost[111]
Unhandled exception in circuit 'sZCrE_hmew8m6SyBKLLNg1nMGB1FyD_LVaRpLiH0s8c'.
System.NullReferenceException: Object reference not set to an instance of an object.
at Hoot.Components.Account.Pages.Login.OnInitializedAsync() in D:\Projects\Labs\Hoot\src\Hoot\Components\Account\Pages\Login.razor:line 85
at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync()
warn: Microsoft.AspNetCore.Components.Server.Circuits.RemoteRenderer[100]
Unhandled exception rendering component: Cannot access a disposed object.
System.ObjectDisposedException: Cannot access a disposed object.
at Microsoft.AspNetCore.Components.RenderTree.ArrayBuilder`1.GrowBuffer(Int32 desiredCapacity)
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InsertNewFrame(DiffContext& diffContext, Int32 newFrameIndex)
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& diffContext, Int32 oldStartIndex, Int32 oldEndIndexExcl, Int32 newStartIndex, Int32 newEndIndexExcl)
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.ComputeDiff(Renderer renderer, RenderBatchBuilder batchBuilder, Int32 componentId, ArrayRange`1 oldTree, ArrayRange`1 newTree)
at Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment, Exception& renderFragmentException)
at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue()
fail: Microsoft.AspNetCore.Components.Server.Circuits.CircuitHost[111]
Unhandled exception in circuit 'sZCrE_hmew8m6SyBKLLNg1nMGB1FyD_LVaRpLiH0s8c'.
System.ObjectDisposedException: Cannot access a disposed object.
at Microsoft.AspNetCore.Components.RenderTree.ArrayBuilder`1.GrowBuffer(Int32 desiredCapacity)
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InsertNewFrame(DiffContext& diffContext, Int32 newFrameIndex)
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& diffContext, Int32 oldStartIndex, Int32 oldEndIndexExcl, Int32 newStartIndex, Int32 newEndIndexExcl)
at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.ComputeDiff(Renderer renderer, RenderBatchBuilder batchBuilder, Int32 componentId, ArrayRange`1 oldTree, ArrayRange`1 newTree)
at Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment, Exception& renderFragmentException)
at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue()
[CascadingParameter]
private HttpContext HttpContext { get; set; } = default!;
also previously .net 8 has IdentityUserAccessor.cs now in .net 10 I as checked the new scaffolding there is not IdentityUserAccessor . For this, it is also throwing the error
warn: Microsoft.AspNetCore.Components.Server.Circuits.RemoteRenderer[100] Unhandled exception rendering component: Object reference not set to an instance of an object. System.NullReferenceException: Object reference not set to an instance of an object. at Hoot.Components.Account.IdentityUserAccessor.GetRequiredUserAsync(HttpContext context) in D:\Projects\Labs\Hoot\src\Hoot\Components\Account\IdentityUserAccessor.cs:line 10 at Hoot.Components.Account.Pages.Manage.Index.OnInitializedAsync() in D:\Projects\Labs\Hoot\src\Hoot\Components\Account\Pages\Manage\Index.razor:line 54 at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync() fail: Microsoft.AspNetCore.Components.Server.Circuits.CircuitHost[111] Unhandled exception in circuit 'ckFOxFSu1PONez1jyWPJfP_stj4Q5k8x_g9uTlG0A5A'. System.NullReferenceException: Object reference not set to an instance of an object. at Hoot.Components.Account.IdentityUserAccessor.GetRequiredUserAsync(HttpContext context) in D:\Projects\Labs\Hoot\src\Hoot\Components\Account\IdentityUserAccessor.cs:line 10 at Hoot.Components.Account.Pages.Manage.Index.OnInitializedAsync() in D:\Projects\Labs\Hoot\src\Hoot\Components\Account\Pages\Manage\Index.razor:line 54 at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync() warn: Microsoft.AspNetCore.Components.Server.Circuits.RemoteRenderer[100] Unhandled exception rendering component: Cannot access a disposed object. System.ObjectDisposedException: Cannot access a disposed object. at Microsoft.AspNetCore.Components.RenderTree.ArrayBuilder`1.GrowBuffer(Int32 desiredCapacity) at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InsertNewFrame(DiffContext& diffContext, Int32 newFrameIndex) at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& diffContext, Int32 oldStartIndex, Int32 oldEndIndexExcl, Int32 newStartIndex, Int32 newEndIndexExcl) at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.ComputeDiff(Renderer renderer, RenderBatchBuilder batchBuilder, Int32 componentId, ArrayRange`1 oldTree, ArrayRange`1 newTree) at Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment, Exception& renderFragmentException) at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue() fail: Microsoft.AspNetCore.Components.Server.Circuits.CircuitHost[111] Unhandled exception in circuit 'ckFOxFSu1PONez1jyWPJfP_stj4Q5k8x_g9uTlG0A5A'. System.ObjectDisposedException: Cannot access a disposed object. at Microsoft.AspNetCore.Components.RenderTree.ArrayBuilder`1.GrowBuffer(Int32 desiredCapacity) at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InsertNewFrame(DiffContext& diffContext, Int32 newFrameIndex) at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& diffContext, Int32 oldStartIndex, Int32 oldEndIndexExcl, Int32 newStartIndex, Int32 newEndIndexExcl) at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.ComputeDiff(Renderer renderer, RenderBatchBuilder batchBuilder, Int32 componentId, ArrayRange`1 oldTree, ArrayRange`1 newTree) at Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment, Exception& renderFragmentException) at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue()
the project was working fine on .net 8.
What has change and what would be the missing that start causing this error?
please help
Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
Sign in to answer