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This article mainly introduces how to automatically bind request parameters to ASPX, ASHX and MVC in .NET, which has a certain reference value. Interested friends can refer to it. I hope you will learn a lot after reading this article.

Preface

When you start an AJAX application, you often have to parse the parameters passed by the client manually, which is extremely boring, and the code is full of code like Request ["xxx"].

The purpose of this article is to show beginners how to automatically bind parameters sent by the client with AJAX to strongly typed member properties or method parameters.

Automatically bind to ASPX and ASHX

Framework support

The copy code is as follows:

Using System

Using System.Collections.Generic

Using System.Linq

Using System.Text

Using System.Threading.Tasks

Namespace Happy.Web

{

Public interface IWantAutoBindProperty

{

}

}

The copy code is as follows:

Using System

Using System.Collections.Generic

Using System.Linq

Using System.Text

Using System.Threading.Tasks

Namespace Happy.Web

{

[AttributeUsage (AttributeTargets.Property, AllowMultiple = true)]

Public sealed class AutoBind: Attribute

{

}

}

The copy code is as follows:

Using System

Using System.Collections.Generic

Using System.Linq

Using System.Text

Using System.Threading.Tasks

Using System.Web

Using Newtonsoft.Json

Using Happy.ExtensionMethods.Reflection

Namespace Happy.Web

{

Public class JsonBinderModule: IHttpModule

{

Public void Init (HttpApplication context)

{

Context.PreRequestHandlerExecute + = OnPreRequestHandlerExecute

}

Private void OnPreRequestHandlerExecute (object sender, EventArgs e)

{

If (! (HttpContext.Current.CurrentHandler is IWantAutoBindProperty))

{

Return

}

Var properties = HttpContext.Current.CurrentHandler.GetType () .GetProperties ()

Foreach (var property in properties)

{

If (! property.IsDefined (typeof (AutoBind), true))

{

Continue

}

String json = HttpContext.Current.Request [property.Name]

Var value = JsonConvert.DeserializeObject (json, property.PropertyType)

Property.SetValue (HttpContext.Current.Handler, value)

}

}

Public void Dispose ()

{

}

}

}

Code example

The copy code is as follows:

The copy code is as follows:

/ / /

Var data = {

Name: 'Duan Guangwei'

Age: 28

}

Ext.Ajax.request ({

Url:'.. / handlers/JsonBinderTest.ashx'

Method: 'POST'

Params: {user: Ext.encode (data)}

});

The copy code is as follows:

Using System

Using System.Web

Using Happy.Web

Public class JsonBinderTest: IHttpHandler, IWantAutoBindProperty

{

[AutoBind]

Public User user {get; set;}

Public void ProcessRequest (HttpContext context)

{

Context.Response.ContentType = "text/plain"

Context.Response.Write ("name: {0}, age: {1}", user.Name, user.Age))

}

Public bool IsReusable

{

Get

{

Return false

}

}

}

Public class User

{

Public string Name {get; set;}

Public int Age {get; set;}

}

Automatically bind to MVC

Framework support

The copy code is as follows:

Using System

Using System.Collections.Generic

Using System.Linq

Using System.Text

Using System.Threading.Tasks

Using System.Web.Mvc

Using Newtonsoft.Json

Namespace Tenoner.Web.Mvc

{

Public class JsonBinder: IModelBinder

{

Public object BindModel (ControllerContext controllerContext, ModelBindingContext bindingContext)

{

String json = controllerContext.HttpContext.Request [bindingContext.ModelName]

Return JsonConvert.DeserializeObject (json, bindingContext.ModelType)

}

}

}

Thank you for reading this article carefully. I hope the article "how to automatically bind request parameters to ASPX, ASHX and MVC in .NET" shared by the editor will be helpful to you. At the same time, I hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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