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: SqlDataReader rdr;
Line 23:
Line 24: string BillNo = Session["InvoiceNo"].ToString(), BillDate = "", AccountCode = "", AccountName = "", Address = "";
Line 25: double GrossAmount = 0, FinalAmount=0,PaidAmount=0,BalanceAmount=0;
Line 26: try
[NullReferenceException: Object reference not set to an instance of an object.]
STSalesBill.Page_Load(Object sender, EventArgs e) in i:\ctochealthcare.com\Admin\STSalesBill.aspx.cs:24
System.Web.UI.Control.OnLoad(EventArgs e) +107
System.Web.UI.Control.LoadRecursive() +89
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1532
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4110.0