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 424:	stringaSQL = "SELECT product_id, product_macrocategory, product_category, product_subcategory, product_name, product_produttore, product_desc, product_price, product_sconto, product_label, product_picture, product_quantity"
Line 425:	stringaSQL = stringaSQL & " FROM products WHERE product_produttore = '"
Line 426:	stringaSQL = stringaSQL & marca.Replace("'", "''")
Line 427:	stringaSQL = stringaSQL & "' AND product_macrocategory = '"
Line 428:	stringaSQL = stringaSQL & macrocat.Replace("'", "''")

Source File: D:\inetpub\webs\manuelstoreit\marche.aspx    Line: 426

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   ASP.marche_aspx.BindData() in D:\inetpub\webs\manuelstoreit\marche.aspx:426
   ASP.marche_aspx.Page_Load(Object sender, EventArgs e) in D:\inetpub\webs\manuelstoreit\marche.aspx:109
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +85
   System.Web.UI.Control.OnLoad(EventArgs e) +79
   System.Web.UI.Control.LoadRecursive() +130
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2852


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4690.0