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/* ****************************************************************************
*
* Copyright (c) Microsoft Corporation. All rights reserved.
*
* Content of this class was mostly derived from the original
* JsonResult class in the System.Web.Mvc 2.0 RTM Assembly. This
* has beeen slightly extended for use with JSONP calls.
*
* This software is subject to the Microsoft Public License (Ms-PL).
* A copy of the license can be found in the license.htm file included
* in this distribution.
*
* You must not remove this notice, or any other, from this software.
*
* ***************************************************************************/
namespace System.Web.Mvc {
using System;
using System.Text;
using System.Web;
using System.Web.Mvc.Resources;
using System.Web.Script.Serialization;
public class JsonpResult : ActionResult {
public JsonpResult() {
}
public Encoding ContentEncoding {
get;
set;
}
public string ContentType {
get;
set;
}
public object Data {
get;
set;
}
public string JsonCallback { get; set; }
public override void ExecuteResult(ControllerContext context) {
if (context == null) {
throw new ArgumentNullException("context");
}
this.JsonCallback = context.HttpContext.Request["jsoncallback"];
if (string.IsNullOrEmpty(this.JsonCallback))
this.JsonCallback = context.HttpContext.Request["callback"];
if (string.IsNullOrEmpty(this.JsonCallback))
throw new ArgumentNullException("JsonCallback required for JSONP response.");
HttpResponseBase response = context.HttpContext.Response;
if (!String.IsNullOrEmpty(ContentType)) {
response.ContentType = ContentType;
} else {
response.ContentType = "application/json";
}
if (ContentEncoding != null) {
response.ContentEncoding = ContentEncoding;
}
if (Data != null) {
JavaScriptSerializer serializer = new JavaScriptSerializer();
response.Write(string.Format("{0}({1});", this.JsonCallback, serializer.Serialize(Data)));
}
}
}
//extension methods for the controller to allow jsonp.
public static class ContollerExtensions {
public static JsonpResult Jsonp(this Controller controller, object data) {
JsonpResult result = new JsonpResult();
result.Data = data;
result.ExecuteResult(controller.ControllerContext);
return result;
}
}
}
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