將QueryString解析爲強類型對象

Question

我知道它可以自動完成;

class Query 
{ 
    public int?[] Id { get; set; } 
} 

public ActionResult Index(Query q) 
{ 
} 

一些查詢字符串/index?id=10&id=11

它的工作原理flawlessy。

但在某些情況下，我只有要求提供：

Reqest.RawUrl 

它可以使用內置的解析來創建查詢對象？

Query q = SomeMagicStuff<Query>(Request.RawUrl); 

Answer 1

是的，這是可能的。如果你使用MVC，您可以使用MVC DefaultModelBinder我寫一個函數這種情況：

public class MyModelBinder<T> 
{ 
    private ModelBindingContext modelBindingContext = new ModelBindingContext(); 

    /// <summary> 
    /// Method to get model from QueryString 
    /// </summary> 
    /// <param name="request">HttpRequest</param> 
    /// <returns>T model</returns> 
    public static T GetModelFromQueryString(HttpRequest request) 
    { 
     modelBindingContext.ModelMetadata = ModelMetadataProviders.Current.GetMetadataForType(null, typeof(T)); 
     modelBindingContext.ValueProvider = new NameValueCollectionValueProvider(request.QueryString, System.Globalization.CultureInfo.InvariantCulture); 
     IModelBinder mb = new DefaultModelBinder(); 
     return (T)mb.BindModel(new ControllerContext(), modelBindingContext); 
    } 

    /// <summary> 
    /// Method to get model from FormColletion 
    /// </summary> 
    /// <param name="request">HttpRequest</param> 
    /// <returns>T model</returns> 
    public static T GetModelFromFormColletion(HttpRequest request) 
    { 
     modelBindingContext.ModelMetadata = ModelMetadataProviders.Current.GetMetadataForType(null, typeof(T)); 
     modelBindingContext.ValueProvider = new NameValueCollectionValueProvider(request.Params, System.Globalization.CultureInfo.InvariantCulture); 
     IModelBinder mb = new DefaultModelBinder(); 
     return (T)mb.BindModel(new ControllerContext(), modelBindingContext); 
    } 
} 

注意，有2種方法。它們僅與request.Params和request.QueryString不同。