The instance of entity type 'Item' cannot be tracked because another instance with the same key value for {'Id'} is already being tracked

Question

I am aware that such question has already been asked, but solution did not help me.

[Fact]
public async Task UpdateAsync()
{
    string newTitle = \"newTitle1\";         


        

Answer 1

I was getting the same problem when was trying to update the value. then i found the proble i was using this.

services.AddDbContext(option => option.UseSqlServer(Configuration.GetConnectionString("databasename")),ServiceLifetime.Singleton);

then i remove lifetime and it worked well for me.

services.AddDbContext(option => option.UseSqlServer(Configuration.GetConnectionString("databasename")));