Asp.net Vnext IValueProvider

概述

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 IValueProvider

根据ValueProvider获取数据，在对数据进行绑定

代码实现

 

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  private class CustomValueProvider : IValueProvider{//判断否具有指定的前缀public Task<bool> ContainsPrefixAsync(string prefix){var result = string.Equals(prefix, "test", StringComparison.OrdinalIgnoreCase);return Task.FromResult(result);}//返回ValueProviderResultpublic Task<ValueProviderResult> GetValueAsync(string key){//进行绑定的值var value = "custom-value-provider-value";var result = new ValueProviderResult(value, value, CultureInfo.CurrentCulture);return Task.FromResult(result);}}

 

  ValueProvider工厂

 

    public IValueProvider GetValueProvider(ValueProviderFactoryContext context){if (context.HttpContext.Request.Path.Value.Contains("TestValueProvider")){return new CustomValueProvider();}return null;}

控制器

 public class HomeController{public string TestValueProvider(string test){return test;}}

启动类

   public class Startup{// For more information on how to configure your application, visit http://go.microsoft.com/fwlink/?LinkID=398940public void ConfigureServices(IServiceCollection services){services.AddSingleton<IMemoryCache, MemoryCache>();services.AddCaching();services.AddSession();services.AddMvc().Configure<MvcOptions>(options =>{//添加CustomValueProviderFactoryoptions.ValueProviderFactories.Insert(1, new CustomValueProviderFactory());});}