Json Method (Object, String, Encoding)

Controller.Json Method (Object, String, Encoding)

Creates a JsonResult object that serializes the specified object to JavaScript Object Notation (JSON) format.

Namespace:  System.Web.Mvc
Assembly:  System.Web.Mvc (in System.Web.Mvc.dll)

'Declaration
Protected Friend Overridable Function Json ( _
	data As Object, _
	contentType As String, _
	contentEncoding As Encoding _
) As JsonResult
'Usage
Dim data As Object 
Dim contentType As String 
Dim contentEncoding As Encoding 
Dim returnValue As JsonResult 

returnValue = Me.Json(data, contentType, _
	contentEncoding)

Parameters

data
Type: System.Object

The JavaScript object graph to serialize.

contentType
Type: System.String

The content type (MIME type).

contentEncoding
Type: System.Text.Encoding

The content encoding.

Return Value

Type: System.Web.Mvc.JsonResult
The JSON result object that serializes the specified object to JSON format.

The data parameter must be serializable. The JavaScriptSerializer class is used to serialize the object. The result object that is prepared by this method is written to the response by the ASP.NET MVC framework when the object is executed.

The following example shows how to send JSON-formatted data to the browser.

Private Function GetDateRangeStr(ByVal start As DateTime, ByVal endD As DateTime) As IEnumerable(Of String) 
    While start <= endD 
        
        start = start.AddDays(1) 
    End While 
End Function 

Public Function TestJsonContentEnc() As ActionResult 
    Return View("TestJson") 
End Function 

<AcceptVerbs(HttpVerbs.Post)> _ 
Public Function TestJsonContentEnc(ByVal numDays As Integer) As ActionResult 
    
    Return Json(GetDateRangeStr(DateTime.Now, DateTime.Now.AddDays(numDays)), "text/x-json", System.Text.Encoding.UTF8) 
End Function
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