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ASP.NET ChangeConflictException; "No row found or changed"

Posted on 2009-06-29
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Last Modified: 2013-11-11
I cant resolve this error.  I'm using Linq to SQL and I can't get this to resolve.  I'm the only one touching this data so it's not a matter of more than one person hitting the data.
using System;

using System.Configuration;

using System.Data;

using System.Data.Linq;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Linq;

using CPMS_DAL;
 

public partial class _Default : System.Web.UI.Page 

{

    protected void Page_Load(object sender, EventArgs e)

    {

        CPMSDataContext db = new CPMSDataContext();

        tbl_Account Account = db.tbl_Accounts.Single(ua => ua.Company_Name == "Test_Company");
 

        ViewState["AcctID"] = Account.AcctID;

        ViewState["version"] = Account.version;

        ViewState["CreateDate"] = Account.CreateDate;

    }

 

    protected void BtnUpdate_Click(object sender, EventArgs e)

    {

        //Create an Account object and set the properties

        tbl_Account Account = new tbl_Account()

        {

            Company_Name = "Testing_company",

            UpdateDate = DateTime.Now,

            UpdateByID = 55

        };

        Account.AcctID = Convert.ToInt32(ViewState["AcctID"]);

        Account.version = (Binary)ViewState["Version"];

        Account.CreateDate = Convert.ToDateTime(ViewState["CreateDate"]);

        CPMSDataContext db = new CPMSDataContext();

        db.tbl_Accounts.Attach(Account, true);
 

        db.SubmitChanges();

        

    }

   }

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Question by:Samantha1667
3 Comments
 
LVL 3

Expert Comment

by:tpsl
Comment Utility
Which line r u encountering the error
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LVL 15

Accepted Solution

by:
NazoUK earned 50 total points
Comment Utility
Your casing on the version viewstate variables is different (version and Version), you're probably not getting anything returned when you fetch that variable.
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Author Closing Comment

by:Samantha1667
Comment Utility
Thank you very very much!
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