I can not read Session Data from Web ServiceRSS

• • Reply
  davilanka

  Member

  2 Points

  31 Posts

  I can not read Session Data from Web Service

  Nov 16, 2016 10:44 AM|davilanka|LINK

  Hi everybody,
  
  I create web application. Then create wsOTURUM.asmx web service. Then I wrote this code in wsOTURUM.asmx

          [WebMethod(EnableSession = true)]
          public string getSession(string ad)
          {
              try
              {
                  string result = (string)(HttpContext.Current.Session[ad]);
                  return result;
              }
              catch (Exception ex)
              {
                  return ex.Message;
              }
          }

  In the Default.aspx.cs

  protected void Button1_Click(object sender, EventArgs e)
  {
  	string kilit = CreateAnahtar(userName);
          string aaaaa = Session["engin"].ToString();
          srvOTURUM.wsOTURUM srvO = new srvOTURUM.wsOTURUM();
          string dddd = srvO.getSession("engin");
  }
  
  private string CreateAnahtar(string userName)
  {
  	try
  	{
  		if (Session["engin"] != null)
  		{
  			string Deger = Guid.NewGuid().ToString();
  			HttpContext.Current.Session["engin"] = Deger;
  			return Deger;
  		}
  		else
  		{
  			string Deger = Guid.NewGuid().ToString();
  			HttpContext.Current.Session.Add("engin", Deger);
  			return Deger;
  		}
  	}
  	catch (Exception ex)
  	{
  		return null;
  	}
  }

  But always dddd variable is null.

  I can read Session["engin"] value Default.aspx.cx file but i can not read Session["engin"] value in web service.
  
  Not: Default.aspx and wsOTURUM.asmx are in the same project.

• • Reply
  Siva Krishna...

  Star

  9052 Points

  2255 Posts

  Re: I can not read Session Data from Web Service

  Nov 16, 2016 11:54 AM|Siva Krishna Macha|LINK

  Make sure you have following in web.config file of asmx

  <add name="Session"
  type="System.Web.SessionState.SessionStateModule"/> under <httpModules>

  Reference: http://stackoverflow.com/a/20919276 

  Also make sure your web service implements either IReadOnlySessionState or IRequiresSessionState interface. 

  References: 

  https://devnet.kentico.com/articles/context-values-in-generic-handlers-(-ashx)-and-web-services-webmethods-(-asmx) 

  http://stackoverflow.com/a/12936466 

  http://www.hanselman.com/blog/GettingSessionStateInHttpHandlersASHXFiles.aspx 

  Mark the post as answer, if it helps you.
  
  Thanks & Regards,
  Siva
• • Reply
  davilanka

  Member

  2 Points

  31 Posts

  Re: I can not read Session Data from Web Service

  Nov 16, 2016 01:29 PM|davilanka|LINK

  Thanks Siva Krishna Macha,
  Unforcunately it still not work. 

  I added your code in web.config

  <configuration>
  	<system.web>
  		<httpModules>
  			<remove name="Session" />
  			<add name="Session" type="System.Web.SessionState.SessionStateModule"/>
  		</httpModules>
  	</system.web>
  </configuration>

  Note: i added <remove name="Session" /> row because when i want to run project it didnt work and give a message. (HTTP Error 500.19 - Internal Server Error,

  Config Error	Cannot add duplicate collection entry of type 'add' with unique key attribute 'name' set to 'Session'

  )

  than i add EnableSessionState="True" prefix in Default.aspx file
  
  

  But it didn't work.

• • Reply
  Siva Krishna...

  Star

  9052 Points

  2255 Posts

  Re: I can not read Session Data from Web Service

  Nov 17, 2016 10:40 AM|Siva Krishna Macha|LINK

  Please also try to implement IReadOnlySessionState or IRequiresSessionState interface for your service, as mentioned in the articles referred in my previous post.

  Mark the post as answer, if it helps you.
  
  Thanks & Regards,
  Siva
• • Reply
  mgebhard

  All-Star

  45101 Points

  19478 Posts

  Re: I can not read Session Data from Web Service

  Nov 17, 2016 12:39 PM|mgebhard|LINK

  davilanka

  I can read Session["engin"] value Default.aspx.cx file but i can not read Session["engin"] value in web service.

  It's really bad design to implement statefull web services.  Is there any reason why you don't simply pass Session["engin"] from the web app since you already have it?  Why save the same data in two different places?