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 45:         DataSet ds = new DataSet();
Line 46:         int Quantity = Convert.ToInt32(Cnn.ExecuteScalar("select top 1 Quantity from ProductSizeQuantity where ProductID=" + Request.QueryString["productid"] + " " + Cond + "  order by id asc"));
Line 47:         cartcolor = Cnn.ExecuteScalar("select top 1 colorid from  ProductSizeQuantity where ProductId=" + Request.QueryString["productid"] + " order by id asc").ToString();
Line 48:         if (size == "")
Line 49:         {

Source File: c:\HostingSpaces\artandcraftfurniture\artandcraftfurniture.com\wwwroot\productview.aspx.cs    Line: 47

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   productview.list(String Cond) in c:\HostingSpaces\artandcraftfurniture\artandcraftfurniture.com\wwwroot\productview.aspx.cs:47
   productview.Page_Load(Object sender, EventArgs e) in c:\HostingSpaces\artandcraftfurniture\artandcraftfurniture.com\wwwroot\productview.aspx.cs:31
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.Web.UI.Control.OnLoad(EventArgs e) +95
   System.Web.UI.Control.LoadRecursive() +59
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +678


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3770.0