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 483:        dr_seo.Read();
Line 484:        string str1 = "";
Line 485:        str1 = dr_seo["price"].ToString();
Line 486:        dr_seo.Close();
Line 487:        string query = "select * from bons";

Source File: d:\hostingspaces\edigimarket.ir\httpdocs\productdetails.aspx.cs    Line: 485

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) +2742604
   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 d:\hostingspaces\edigimarket.ir\httpdocs\productdetails.aspx.cs:485
   productdetails.Page_Load(Object sender, EventArgs e) in d:\hostingspaces\edigimarket.ir\httpdocs\productdetails.aspx.cs:227
   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:4.8.4700.0