How to get session id from cs class file in asp.net

[sweth]

I am classing common function in c# class file in asp.net.
HttpContext.Current.Session.SessionID gives object reference not set to an instance error. However I could get session id from codebehind file

Please help.

 

[stsuing]

Could you post the class with the function to return the sessionid, and how you call the function?

 

[sweth]

Thanks for your reply

The following is the function which I used to call from a class file


private void getUserInfo(string userid)
{

sqlDataAccess sda = new sqlDataAccess(ConfigurationSettings.AppSettings["constring"],"Global");



string sessid = HttpContext.Current.Session.Contents.SessionID;

object[] parameters = {userid,sessid};
DataSet ds = sda.executeSqlReturnDataSet("proc_getuserinfo",CommandType.StoredProcedure,parameters);


if (ds.Tables[0].Rows.Count >= 1)
{
_officeid = Convert.ToInt32(ds.Tables[0].Rows[0][0].ToString());
_username = ds.Tables[0].Rows[0][1].ToString();
_officename = ds.Tables[0].Rows[0][2].ToString();
_gid = ds.Tables[0].Rows[0][8].ToString();
_officeaddress = ds.Tables[0].Rows[0][9].ToString();
_pid=ds.Tables[0].Rows[0][10].ToString();
_slot=Convert.ToInt32(ds.Tables[0].Rows[0][11].ToString());
}

sda.cleanUp();
}



string sessid = HttpContext.Current.Session.Contents.SessionID;

I am getting error in the above line. Though I could pass session id from a web page. The above code will considerably save lots of line in main pages.

 

[stsuing]

Could you show the code calling the function? I Created 2 different examples and didn't have any problems. Any other information you can think of would help.

 

[sweth]

Thanks for your help. We finally found out today we tried to get session id in Global.asax.cs file also. We removed that and from class file we could get session id.

Thanks for your quick response