when i run shows error as follows use of unassigned local variable

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Result screen page as follows;

C#

protected void BtnReExam_Click(object sender, EventArgs e)
    {
         Int32 Avg;
         Avg = Convert.ToInt32(Session["Avg"]);
         if (Avg < 60)
         {
             string studname;
             string studid;
             Session["StudName"] = studname;
             Session["StudID"] = studid;
             Session.Clear();
             Session.RemoveAll();
             Response.Redirect("login.aspx");
         }
         else
         {
             Session.Clear();
             Session.RemoveAll();
             Response.Redirect("login.aspx");
         }

    }

Login Page code as follows;

In login page, page load i written the below code

C#

TxtName.Text = Session["StudName"].ToString();
   TxtStudID.Text = Session["studID"].ToString();

from the above code i am retrieving the studname and studentid value from the result page and display into the login page using session.

When i run shows error as follows in the result page as follows;

use of unassigned local variable studname
use of unassigned local variable studid

please help me what is the problem in my code?

Regards,
Narasiman P.

Posted 6-May-13 1:07am

Member 8054539

Updated 6-May-13 1:59am

Joezer BH

v2

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OriginalGriff · Answer 1 · 2013-05-06T01:09:00

Look at your code:

C#

string studname;
string studid;
Session["StudName"] = studname;
Session["StudID"] = studid;

What value is in studname or studid when you try to set the value of the session variable?
None - so it is an unassigned local variable: it does not have any value assigned when you use it for the first time.
Set it to a value, and all will be well:

C#

string studname = "";
string studid = "";
Session["StudName"] = studname;
Session["StudID"] = studid;

josh-jw · Answer 2 · 2013-05-06T01:32:00

Solution 2

set

C#

string studname=string.Empty;
string studid=string.Empty;

Posted 6-May-13 1:32am

josh-jw

Bikash Prakash Dash · Answer 3 · 2013-05-06T02:05:00

You have not assigned any values to string studname and string studid.

First assign them with some value before assign them with session parameters try this.

C#

string studname="Any String";
             string studid="Any String";
             Session["StudName"] = studname;
             Session["StudID"] = studid;

when i run shows error as follows use of unassigned local variable

3 solutions

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