I have EF core app, everything is ok, I made a model: public class MyModel { [Key] public int Id { get; set; } [Column(TypeName = "nvarchar(20)")] public string? Name { get; set; } [Column(TypeName = "nvarchar(20)")] public string? FamilyName { get; set; } } Did add-miggratiom , then update-database. And everything works OK in my c# ef core CRUD app, I update Database with the entity, and it is OK. What I have tried: <pre>BUT If I manually insert Chinese characters into MyModel Table in MS SQL Server insert into MyModel ([Name], [FamilyName]) values('小美', '王') then there are question marks:
var
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