Read (Get) specific data from Json string in ASP.Net using C# and VB.Net

Hi maideen,

Please refer below sample.

HTML

<asp:Label ID="lblToken" runat="server"></asp:Label>

Namespaces

C#

using System.IO;
using Newtonsoft.Json;

VB.Net

Imports System.IO
Imports Newtonsoft.Json

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    System.IO.StreamReader stReader = new System.IO.StreamReader(Server.MapPath("JsonIndexing.json"));
    RootObject root = Newtonsoft.Json.JsonConvert.DeserializeObject<RootObject>(stReader.ReadToEnd());
    lblToken.Text = string.Format("token: <b>{0}</b>", root.accessTokenResponse.token);
}

public class RootObject
{
    public accessTokenResponse accessTokenResponse { get; set; }
}

public class accessTokenResponse
{
    public string token { get; set; }
    public string token_type { get; set; }
    public string expires_in_seconds { get; set; }
    public string client_id { get; set; }
    public responseStatus responseStatus { get; set; }
}

public class responseStatus
{
    public string code { get; set; }
    public string message { get; set; }
    public string messageDetails { get; set; }
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    Dim stReader As System.IO.StreamReader = New System.IO.StreamReader(Server.MapPath("JsonIndexing.json"))
    Dim root As RootObject = Newtonsoft.Json.JsonConvert.DeserializeObject(Of RootObject)(stReader.ReadToEnd())
    lblToken.Text = String.Format("token: <b>{0}</b>", root.accessTokenResponse.token)
End Sub

Public Class RootObject
    Public Property accessTokenResponse As accessTokenResponse
End Class

Public Class accessTokenResponse
    Public Property token As String
    Public Property token_type As String
    Public Property expires_in_seconds As String
    Public Property client_id As String
    Public Property responseStatus As responseStatus
End Class

Public Class responseStatus
    Public Property code As String
    Public Property message As String
    Public Property messageDetails As String
End Class

Json

{
    "accessTokenResponse":
	 {
        "token": "xxxxxxxxx",
        "token_type": "Bearer",
        "expires_in_seconds": "48114",
        "client_id": "xxxxxx",
        "responseStatus": 
		{
            "code": "100000",
            "message": "Service operation completed successfully",
            "messageDetails": "Access token assigned."
        }
    }
}

Output

token: xxxxxxxxx