Blazor WASM cannot use Entity Framework Core

Pubblicato il: 13 ottobre 2024
sul canale di: Emrah KAYA

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I am writing a Blazor WASM application in .NET 8. Today I tried to add fetching of database data to my app but I can't seem to get Entity Framework Core working. I am using the same libraries as I do always.
I have everything written like I always do but I just can't seem to find the issue. When I try to run the app and I try to fetch data from context in OnInitializedAsync method I get the following error in the console:
OnInitializedAsync

Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
Unhandled exception rendering component: Type MySql.Data.EntityFrameworkCore.Infrastructure.Internal.MySQLOptionsExtension+ExtensionInfo has invalid vtable method slot 5 with method none
System.TypeLoadException: Type MySql.Data.EntityFrameworkCore.Infrastructure.Internal.MySQLOptionsExtension+ExtensionInfo has invalid vtable method slot 5 with method none
at Microsoft.EntityFrameworkCore.DbContextOptions.GetHashCode()
at System.Collections.Concurrent.ConcurrentDictionary2[[Microsoft.EntityFrameworkCore.Infrastructure.IDbContextOptions, Microsoft.EntityFrameworkCore, Version=8.0.8.0, Culture=neutral, PublicKeyToken=adb9793829ddae60],[System.ValueTuple2[[System.IServiceProvider, System.ComponentModel, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a],[System.Collections.Generic.IDictionary2[[System.String, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.String, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]], System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]], System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].GetOrAdd[ValueTuple2](IDbContextOptions key, Func3 valueFactory, ValueTuple2 factoryArgument)
at Microsoft.EntityFrameworkCore.Internal.ServiceProviderCache.GetOrAdd(IDbContextOptions options, Boolean providerRequired)
at Microsoft.EntityFrameworkCore.DbContext.get_ContextServices()
at Microsoft.EntityFrameworkCore.DbContext.get_Model()
at Microsoft.EntityFrameworkCore.Internal.InternalDbSet1[[MyProject.Components.Models.Player, MyProject, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].get_EntityType() at Microsoft.EntityFrameworkCore.Internal.InternalDbSet1[[MyProject.Components.Models.Player, MyProject, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].CheckState()
at Microsoft.EntityFrameworkCore.Internal.InternalDbSet1[[MyProject.Components.Models.Player, MyProject, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].get_EntityQueryable() at Microsoft.EntityFrameworkCore.Internal.InternalDbSet1[[MyProject.Components.Models.Player, MyProject, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].System.Collections.Generic.IEnumerable.GetEnumerator()
at System.Collections.Generic.List1[[MyProject.Components.Models.Player, MyProject, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]..ctor(IEnumerable1 collection)
at System.Linq.Enumerable.ToList[Player](IEnumerable`1 source)
at MyProject.Pages.Home.OnInitializedAsync() in C:\Users\FilipMráz\source\repos\MyProject\MyProject\Pages\Home.razor:line 112
at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync()

Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
Unhandled exception rendering component: Type MySql.Data.EntityFrameworkCore.Infrastructure.InternSource of the question:
https://stackoverflow.com/questions/7...

Question and source license information:
https://meta.stackexchange.com/help/l...
https://stackoverflow.com/

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