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 22:         Dim dr As DataRow = dt(0)
Line 23:         Dim retValTot As String = "<h1>" & drAvcp("titolo") & "</h1>"
Line 24:         retValTot &= "<br><b>CIG</b> - " & dr("cig") & "<br>"
Line 25:         retValTot &= "<b>Struttura Proponente</b><br>"
Line 26:         retValTot &= "<b>Codice Fiscale</b> - " & dr("codiceFiscaleProp") & " - Denominazione - " & dr("denominazione") & "<br>"

Source File: D:\home\ravennaholdingspa.it\trasparenza.ravennaholdingspa.it\appalto.aspx.vb    Line: 24

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   appalto.datiAppalto(DataRow drAvcp) in D:\home\ravennaholdingspa.it\trasparenza.ravennaholdingspa.it\appalto.aspx.vb:24
   appalto.Page_Load(Object sender, EventArgs e) in D:\home\ravennaholdingspa.it\trasparenza.ravennaholdingspa.it\appalto.aspx.vb:15
   System.EventHandler.Invoke(Object sender, EventArgs e) +0
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0