http://www.intersoftsolutions.com/Community/WebGrid/Ask-about-NullReferenceException/http://www.intersoftsolutions.comenCopyright 2002 - 2015 Intersoft Solutions Corp. All rights reserved.60http://www.intersoftsolutions.com/Community/WebGrid/Ask-about-NullReferenceException/Thu, 17 Jan 2013 21:04:12 GMThandy@intersoftpt.com<p>Hi,</p><p>Can show us your table sturcture? For that error, have you checked if the current row might not have a child records? Perhaps, that is causing the issue. So you will need to add some validations to handle that error.</p> <p>Regards,</p> <p>Handy</p>http://www.intersoftsolutions.com/Community/WebGrid/Ask-about-NullReferenceException/Thu, 17 Jan 2013 04:40:51 GMTfernando.pablo@kcc.com<p>Hi.</p> <p>I am trying to get the number of columns to Chiltable into my gridview whit this code.</p><span style="font-size: 13px;"></span><span style="color: rgb(0, 0, 255); font-size: 13px;"><span style="color: rgb(0, 0, 255); font-size: 13px;">Dim</span></span><span style="font-size: 13px;"> aso </span><span style="color: rgb(0, 0, 255); font-size: 13px;"><span style="color: rgb(0, 0, 255); font-size: 13px;">As</span></span><span style="font-size: 13px;"> </span><span style="color: rgb(0, 0, 255); font-size: 13px;"><span style="color: rgb(0, 0, 255); font-size: 13px;">Integer</span></span><span style="font-size: 13px;"> = e.Row.GetChildTableRows(e.Row.Table.ChildTables(x)).Table.Rows.Count</span> <p>But some times  I have this error:  "<span class="hps">user code</span> <span class="hps">not control NullReferenceException".</span></p> <p><span class="hps">Any idea about that?</span></p> <p><span class="hps">Thanks in advance.</span></p> <p><span class="hps"></span> </p><span style="font-size: 13px;"></span>