CODEWITHSUNDEEP
c#web-servicessession
user3388435
user3388435

Reputation: 1

what is session concept in web service? and how to implement

I have a problem in session concept of asp.net web services, how to implement in a application?

and also i have a problem in eval in asp.net actually what is the use of eval

<asp:ImageButton ID="imgbtnDelete" ImageUrl="~/cpanel/images/icons/table/actions-delete.png"
       runat="server" CommandArgument='<%#Eval("JobID")%>' OnClick="imgbtnDelete_Click">

Upvotes: 0

Views: 253

Answers (2)

Deepak Sharma
Deepak Sharma

Reputation: 223

public class MyDemo : System.Web.Services.WebService
{
    [WebMethod (EnableSession = true)]
    public string HelloWorld()
    {
        // get the Count out of Session State
        int? Count = (int?)Session["Count"];

        if (Count == null)
            Count = 0;

        // increment and store the count
        Count++;
        Session["Count"] = Count;

        return "Hello World - Call Number: " + Count.ToString();
    }
}

[WebMethod (EnableSession = true)]-This attribute enables session in web service

From client application- on button click event we have to write this to access web service

localhost.MyDemo MyService;

// try to get the proxy from Session state
MyService = Session["MyService"] as localhost.MyDemo;

if (MyService == null)
{
    // create the proxy
    MyService = new localhost.MyDemo();

    // create a container for the SessionID cookie
    MyService.CookieContainer = new CookieContainer();

    // store it in Session for next usage
    Session["MyService"] = MyService;
}

// call the Web Service function
Label1.Text += MyService.HelloWorld() + "<br />";

}

output will be:- Hello World - Call Number: 1 Hello World - Call Number: 2 Hello World - Call Number: 3

Upvotes: 1

shenku
shenku

Reputation: 12448

A web service generally runs in a web application just like a web site, so you have access to all the same session functionality.

See Session State Overue

You can store data in the session using :

Session["FirstName"] = "Peter";
Session["LastName"] = "Parker";

Retreive it using:

ArrayList stockPicks = (ArrayList)Session["StockPicks"];

Upvotes: 1

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