how to Use Session variable between WebService method?

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Dear Friends,

I have a webservice where i am using a

VB

Session("BaseCurrency")

variable inside a method.

When the user call this Web Service Method which uses the

VB

Session("BaseCurrency")

variable then an error occurs:-

"Object reference not set to an instance of an object.".

I am aware that this variable value is not initialized that is why this error is coming but i have to use this variable value in my method as the value for different companies are different.

The user can consume this webservice for any company and also the Base Currency could be different for different company.

Please find the code below:-

Public Class MISService
    Inherits System.Web.Services.WebService 
    <WebMethod()> _
    Public Function InsertMIS(ByVal strMis1 As String, ByVal strMis2 As String, ByVal strMis3 As String, ByVal pardoc As String, ByVal csid As String) As Object
        Dim objMIS As New Prj_misrgp.cls_misrgp
        Try
            Dim strMis As String = strMis1 + strMis2 + strMis3
            strMis = strMis.Replace("APPglcost", Application("Glcostset"))
            strMis = strMis.Replace("APPcurcost", Application("curcostset"))
 
            Return objMIS.save(strMis, pardoc, "MIS", "4.3.3", csid, "", "", Session("BaseCurrency"))
        Catch ex As Exception
            Return ex.Message
        Finally
            objMIS = Nothing
        End Try
End Class
    End Function

Please help me resolve this issue.

Thanks

Varun Sareen

Posted 7-May-14 1:27am

Varun Sareen

Updated 7-May-14 1:57am

v2

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Comments

Sanket Saxena 7-May-14 7:45am

paste your code

Varun Sareen 7-May-14 7:58am

added.

Varun Sareen 7-May-14 7:58am

Added

Sanket Saxena 7-May-14 7:59am

where did you initialize the Session("BaseCurrency")?

Varun Sareen 7-May-14 8:07am

Dear Sanket,

This is what i require. The Session("BaseCurrency") to be initialized the moment the WebService gets a hit.

Regards

Varun

Sanket Saxena 7-May-14 8:15am

Exactly dear, but you should get the base currency value on the basis of some id and assign it to the session value else you cant pass it directly.

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Darshan.Pa · Answer 1 · 2014-05-07T01:43:00

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
namespace MySessionEnabledWebService
{
    /// <summary>
    /// Summary description for Service1
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
    // [System.Web.Script.Services.ScriptService]
    public class Service1 : System.Web.Services.WebService
    {
        [WebMethod(EnableSession = true)]
        public int GetPerUserClickCount()
        {
            int count;
            if (Session["ConnectCount"] == null)
                count = 1;
            else
                count = (int)Session["ConnectCount"] + 1;
            Session["ConnectCount"] = count;
            return count;
        }
    }
}