Server Error in '/' Application.

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:


Line 32:                 SqlCommand cmd_cat_name = new SqlCommand("select name from shop_category where id=@id", Conn);
Line 33:                 cmd_cat_name.Parameters.Add("@id", SqlDbType.Int).Value = id;
Line 34:                 catname = cmd_cat_name.ExecuteScalar().ToString();
Line 35: 
Line 36:                 string commandText = "select id,name from shop_category where parent_id=@id";

Source File: c:\inetpub\vhosts\snowyadak.net\httpdocs\category.aspx.cs    Line: 34

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   category.Page_Load(Object sender, EventArgs e) in c:\inetpub\vhosts\snowyadak.net\httpdocs\category.aspx.cs:34
   System.Web.UI.Control.OnLoad(EventArgs e) +107
   System.Web.UI.Control.LoadRecursive() +89
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1532


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4682.0