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Editorial Team
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Asked: 2026-05-22T02:55:45+00:00

The error occurs on one of the forms, I can edit the form and

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The error occurs on one of the forms, I can edit the form and click the update button when I first go to the page and everything works fine, but if I visit the page and wait for about 2 -5 minutes and then try editing the form and clicking the update button I ge this error;

It looks to be something wrong with the session ID and I thought it could be something to do with timeout issues but im not sure.

Any suggestions will be appreciated:

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 80: protected void
imgUpdateDetails_Click(object sender,
EventArgs e)
Line 81: {
Line 82: SessionManager.CurrentBusinessClubMember.BCMListingDetails.BusinessClubMemberID = SessionManager.CurrentBusinessClubMember.ID;
Line 83:
SessionManager.CurrentBusinessClubMember.BCMListingDetails.Address1 = editaddressline1.Value;
Line 84:
SessionManager.CurrentBusinessClubMember.BCMListingDetails.Address2 = editaddressline2.Value;

Source File:
d:Sitesdemelzabusinessclub.co.ukpublic_htmlWebsiteListingDetails.aspx.cs Line: 82

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.]
DemelzaBusinessClubSite_ListingDetails.imgUpdateDetails_Click(Object sender, EventArgs e) in
d:Sitesdemelzabusin/essclub.co.ukpublic_htmlWebsiteListingDetails.aspx.cs:82
System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e) +111
System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +79
System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +175
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565

Version Information: Microsoft .NET
Framework Version:2.0.50727.5444;
ASP.NET Version:2.0.50727.5420

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1 Answer

  1. Editorial Team

    in your method 

    imgUpdateDetails_Click

    you have a line that states 

    SessionManager.CurrentBusinessClubMember.BCMListingDetails.Address2 = editaddressline2.Value;

    The error indicates that one of the following hasn’t been instantiated before being used.

    SessionManager
SessionManager.CurrentBusinessClubMember
SessionManager.CurrentBusinessClubMember.BCMListingDetails
editaddressline2

    unless you are storing these objects somewhere like in the session and pulling them out on each post back they will be null!

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