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 102:        else if (Url.Contains("products/service") || Url.Contains("products/shape") || Url.Contains("products/group") || Url.Contains("products"))
Line 103:        {
Line 104:            int id = Convert.ToInt32(Request.QueryString["id"].ToString());
Line 105:            var query1 = db.Banners.Where(p => p.ProductGroupId==id  & p.Status == Status & p.Culture == "fa-IR").OrderBy(p => p.ShowOrder);
Line 106:            lvwSlider.DataSource = query1;

Source File: c:\inetpub\vhosts\zariniran.com\httpdocs\main.master.cs    Line: 104

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   main.slider() in c:\inetpub\vhosts\zariniran.com\httpdocs\main.master.cs:104
   main.Page_Load(Object sender, EventArgs e) in c:\inetpub\vhosts\zariniran.com\httpdocs\main.master.cs:25
   System.Web.UI.Control.OnLoad(EventArgs e) +105
   System.Web.UI.Control.LoadRecursive() +67
   System.Web.UI.Control.LoadRecursive() +161
   System.Web.UI.Control.LoadRecursive() +161
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3784


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3930.0