[英]IConfiguration is always NULL .NET CORE in Blazor app / Razor
無論我嘗試什么,IConfiguration 始終是 null。我還嘗試將 singleton 添加到啟動 class,但始終是 Z37A61DA78ECC04DFF9BDA9C
啟動 class
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
這是我的安全 class
IConfiguration _configuration { get;} **<<always null**
public Security(IConfiguration configuration) **<<always null**
{
_configuration = configuration;
}
public string GetConnectionString()
{
string connectionString = _configuration.GetConnectionString("localDb");
return connectionString;
}
這是我的 Index.Razor 頁面
namespace WebbiSkoolsQuizManager.Pages
{
public class IndexBase : ComponentBase
{
public IConfiguration Configuration { get; }
public async Task TryLogin(string user, string pass)
{
}
public async Task AddUserHash(string username, string password)
{
Security secure = new Security(Configuration);
string connectionstring = secure.GetConnectionString();
}
}
}
應用設置.json
{
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft": "Warning",
"Microsoft.Hosting.Lifetime": "Information"
}
},
"ConnectionKeys": {
"localDb": "Data Source=(localdb)\\MSSQLLocalDB;Initial Catalog=Quiz;Integrated Security=True;Connect Timeout=30;Encrypt=False;TrustServerCertificate=False;ApplicationIntent=ReadWrite;MultiSubnetFailover=False"
},
"AllowedHosts": "*"
}
提前謝謝你,我已經搜索了高和低,關於 blazor 特定的修復,但我找不到任何東西..(PS its.Net core 3)
我猜這個: public IConfiguration Configuration { get; }
public IConfiguration Configuration { get; }
應該:
[Inject]
public IConfiguration Configuration { get; }
注意:您不能簡單地定義服務的屬性,並期望它被填充...如果您使用的是 Razor 組件 class 定義(.cs),您可以使用[Inject]
屬性。 如果您使用的是 Razor 組件 (.razor),您可以在組件的視圖部分使用@inject
指令,例如:
@page "/"
@inject IConfiguration Configuration
或者在@code
部分,像這樣:
@code
{
[Inject]
public IConfiguration Configuration { get; }
}
另請注意,如果要將服務注入普通的 C# class,則需要使用構造函數注入
I started a new blazor project (.Net 6) and when I @inject the IConfiguration to my.razor file, the configuration object turns out to be always null.
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