在@code中访问@Inject变量-.net Core Blazor

Question

我是Blazor .net Core的新手。我已经在.razor页面中注入了服务设置

@inject Microsoft.Extensions.Options.IOptions<Configuration> Configuration

接下来，我在下面的@code指令中初始化_m对象

@code 
{
    private ViewModel _m = new ViewModel(Configuration.Value);

    protected async Task DoSearchAsync()
    {
        await _m.PerformSearchAsync();
    }
}

在[[ConfigureServices中注册的代码：]

services.Configure<Configuration>(options => 
    Configuration.GetSection("ConfigurationSettings").Bind(options));

Configuration.cs

public class Configuration
{
    private string ServiceEndpointUrl { get; set; }
}

我需要将Configuration传递给采用ViewModel()的IOptions<T>构造函数，但是由于某些原因，我无法在@code指令中访问我注入的变量“ Configuration”。我该如何访问？

Answer 1

您可以通过以下方法访问注入的服务：

@inject Microsoft.Extensions.Options.IOptions<Configuration> cfg

@code {
    private ViewModel _m;

    protected override void OnInitialized()
    {
        base.OnInitialized();
        _m = new ViewModel(cfg.Value);
    }

    protected async Task DoSearchAsync()
    {
        await _m.PerformSearchAsync();
    }
}