我正在尝试连接到. NET6中的应用程序的数据库。我的连接字符串如下

"ConnectionStrings": {
        "Default": "Server=localhost;Database=Tim;User Id=SA;Password=*****;TrustServerCertificate=true"

    }

它在appsettings.json中定义。
在azure data studio中，我有一个名为Tim的数据库，我正在尝试访问它

但是当我运行我的应用程序时，我得到了以下错误

SqlException: Invalid object name 'Tim'.
Microsoft.Data.SqlClient.SqlCommand+<>c.<ExecuteDbDataReaderAsync>b__209_0(Task<SqlDataReader> result)
System.Threading.Tasks.ContinuationResultTaskFromResultTask<TAntecedentResult, TResult>.InnerInvoke()
System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, object state)
System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, object state)
System.Threading.Tasks.Task.ExecuteWithThreadLocal(ref Task currentTaskSlot, Thread threadPoolThread)
Dapper.SqlMapper.QueryAsync<T>(IDbConnection cnn, Type effectiveType, CommandDefinition command) in SqlMapper.Async.cs
DataLibrary.DB.SqlDb.LoadData<T, U>(string storedProcedure, U parameters, string connectionStringName)
RPDemoApp.Pages.Orders.CreateModel.OnGet() in Create.cshtml.cs
+
            var food = await _foodData.GetFood();
Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure.ExecutorFactory+NonGenericTaskHandlerMethod.Execute(object receiver, object[] arguments)
Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure.PageActionInvoker.InvokeHandlerMethodAsync()
Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure.PageActionInvoker.InvokeNextPageFilterAsync()
Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure.PageActionInvoker.Rethrow(PageHandlerExecutedContext context)
Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure.PageActionInvoker.Next(ref State next, ref Scope scope, ref object state, ref bool isCompleted)
Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure.PageActionInvoker.InvokeInnerFilterAsync()
Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResourceFilter>g__Awaited|25_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, object state, bool isCompleted)
Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResourceExecutedContextSealed context)
Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(ref State next, ref Scope scope, ref object state, ref bool isCompleted)
Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeFilterPipelineAsync>g__Awaited|20_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, object state, bool isCompleted)
Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddlewareImpl.Invoke(HttpContext context)

我犯了什么错？
编辑：这是我的服务收集器代码

builder.Services.AddSingleton(new ConnectionStringData
{
    SqlConnectionName= "DefaultConnection"
});

builder.Services.AddSingleton<IDataAccess, SqlDb>();
builder.Services.AddSingleton<IFoodData, FoodData>();
builder.Services.AddSingleton<IOrderData, OrderData>();

这里是GetFood方法，它使用一个存储过程从数据库中获取数据。

public Task<List<FoodModel>> GetFood()
        {
            return _dataAccess.LoadData<FoodModel, dynamic>("dbo.spFood_All",
                                                            new { },
                                                            _connectionString.SqlConnectionName);

        }
    ```