Add migration fails with 'Unable to cast object of type 'System.Single' to type 'System.Int32'

[dominique-ruest]

Adding a migration fails with 'Unable to cast object of type 'System.Single' to type 'System.Int32'.

Steps to reproduce

Generate an initial migration with entity types having numerical property types. Works fine. Without changes attempt to generate another migration with a new name. The migration fails with the following error:

System.InvalidCastException: Unable to cast object of type 'System.Single' to type 'System.Int32'.
at lambda_method(Closure , ValueBuffer )
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalShadowEntityEntry..ctor(IStateManager stateManager, IEntityType entityType, ValueBuffer& valueBuffer)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntryFactory.NewInternalEntityEntry(IStateManager stateManager, IEntityType entityType, Object entity, ValueBuffer& valueBuffer)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntryFactory.Create(IStateManager stateManager, IEntityType entityType, Object entity, ValueBuffer& valueBuffer)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.CreateEntry(IDictionary2 values, IEntityType entityType) at Microsoft.EntityFrameworkCore.Update.Internal.UpdateAdapter.CreateEntry(IDictionary2 values, IEntityType entityType)
at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.TrackData(IModel source, IModel target)
at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.Diff(IModel source, IModel target, DiffContext diffContext)
at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.GetDifferences(IModel source, IModel target)
at Microsoft.EntityFrameworkCore.Migrations.Design.MigrationsScaffolder.ScaffoldMigration(String migrationName, String rootNamespace, String subNamespace, String language)
at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.AddMigration(String name, String outputDir, String contextType)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigrationImpl(String name, String outputDir, String contextType)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigration.<>c__DisplayClass0_0.<.ctor>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_0`1.b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
Unable to cast object of type 'System.Single' to type 'System.Int32'.

Further technical details

EF Core version: 3.0.0
Database provider: Microsoft.EntityFrameworkCore.SqlServer
Target framework: .NET Core 3.0
Operating system: Visual Studio 2019

[smitpatel]

Duplicate of #17851

[smitpatel]

Generate an initial migration with entity types having numerical property types. Works fine. Without changes attempt to generate another migration with a new name. The migration fails with the following error:

I tried above and it still worked for me.
@Doumda - Can you provide us a small repro? Model class & Model configuration with has data works.