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POWhy HttpContext.Current.Session["value"].ToString() gives null value inside App_Code class file, Object reference not set to an instance of an object
 

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  1. POWhy HttpContext.Current.Session["value"].ToString() gives null value inside App_Code class file, Object reference not set to an instance of an object
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    <p>Here Scenario is HttpContext.Current.Session["value"].ToString() gives null value, even have already set session value when user login.</p> <p><strong>My webconfig</strong></p> <pre><code>&lt;sessionState timeout="40" mode="InProc"/&gt; </code></pre> <p><strong>My global.asax</strong></p> <pre><code> void Session_Start(object sender, EventArgs e) { // Code that runs when a new session is started Session["EmployeeId"] = ""; this.Session["DomainName"] = ""; } </code></pre> <p><strong>In my Defaultpage.asppx.cs</strong></p> <p><code>Emp_grade empgrd = new Emp_grade();</code> gives Object reference not set to an instance of an object</p> <pre><code>using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.Configuration; public partial class EmpGrade : System.Web.UI.Page { //here am getting error(The type initializer for 'Emp_grade' threw an exception) // stack error message Object reference not set to an instance of an object. Emp_grade empgrd = new Emp_grade(); protected void Page_Load(object sender, EventArgs e) { logic code... Datatable dt= empgrd.EmpRecord(); } } </code></pre> <p>In my <code>App_Code folder</code> i have class file <code>Emp_grade.cs</code></p> <pre><code>using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Data.SqlClient; using System.Web.Configuration; using System.Web.SessionState; public class Emp_grade { public Emp_grade() { //TODO: Add constructor logic here } static string getConnection = HttpContext.Current.Session["DomainName"].ToString(); SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings[getConnection].ConnectionString); public DataTable EmpRecord() { logic code } } </code></pre> <p><strong>My login page:</strong></p> <pre><code> protected void Page_Load(object sender, EventArgs e) { //set some value Session["DomainName"] = domainname; } </code></pre> <p><strong>ScreenShot(Debugging)</strong> <img src="https://i.stack.imgur.com/ZXPO3.jpg" alt="enter image description here"></p>
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    1. This table or related slice is empty.
    1. PTQuestion
    1. USSatinder singh
    1. USSatinder singh
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      1. LTLinked
    1. PL
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      1. LTLinked
    1. This table or related slice is empty.
    1. PO
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    2. PO
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    1. This table or related slice is empty.
    1. COSo... You're trying to get the value off the session tag after assigning a value to it?
      singulars
      1. POWhy HttpContext.Current.Session["value"].ToString() gives null value inside App_Code class file, Object reference not set to an instance of an object
      1. USTheGeekZn
    2. COdoes your connection string work?
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      1. POWhy HttpContext.Current.Session["value"].ToString() gives null value inside App_Code class file, Object reference not set to an instance of an object
      1. USJodrell
    3. COconnectionstring works,only if i get the getConnection not null values
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      1. POWhy HttpContext.Current.Session["value"].ToString() gives null value inside App_Code class file, Object reference not set to an instance of an object
      1. USSatinder singh
 

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