Server Error in '/' Application.

Invalid attempt to read when no data is present.

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.InvalidOperationException: Invalid attempt to read when no data is present.

Source Error:


Line 426:        dr_seo.Read();
Line 427:        string str1 = "";
Line 428:        str1 = dr_seo["price"].ToString();
Line 429:        dr_seo.Close();
Line 430:        string query = "select * from bons";

Source File: c:\inetpub\vhosts\noorzadlighting.ir\httpdocs\productdetails.aspx.cs    Line: 428

Stack Trace:


[InvalidOperationException: Invalid attempt to read when no data is present.]
   System.Data.SqlClient.SqlDataReader.CheckDataIsReady(Int32 columnIndex, Boolean allowPartiallyReadColumn, Boolean permitAsync, String methodName) +2742428
   System.Data.SqlClient.SqlDataReader.TryReadColumn(Int32 i, Boolean setTimeout, Boolean allowPartiallyReadColumn) +55
   System.Data.SqlClient.SqlDataReader.GetValueInternal(Int32 i) +42
   System.Data.SqlClient.SqlDataReader.GetValue(Int32 i) +95
   productdetails.bon() in c:\inetpub\vhosts\noorzadlighting.ir\httpdocs\productdetails.aspx.cs:428
   productdetails.Page_Load(Object sender, EventArgs e) in c:\inetpub\vhosts\noorzadlighting.ir\httpdocs\productdetails.aspx.cs:217
   System.Web.UI.Control.OnLoad(EventArgs e) +108
   System.Web.UI.Control.LoadRecursive() +90
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4494.0