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Select recodrs from a datatable:- DataTable dtLog = Funtion(); DataRow[] drs = dtLog.Select(" UpdatedDate  = '" + dtDate.Rows[i]["Date"].ToString() + "'");  DataTable dts = dtLog.Clone();   dts = drs.CopyToDataTable ();

Default Button for a page:                   <form id="form1" runat="server" defaultbutton="buttonName"> < /form > Default Button for a panel:                    < asp:Panel runat = "server" DefaultButton = "lbHello" > < /asp:Panel > Default in a div:-                    < div onkeypress="javascript:return WebForm_FireDefaultButton(event, 'buttonID')" > < /div > For Linkbutton to make a default page, add below javascript at the end of the page <script type="text/javascript">     var __defaultFired = false; function WebForm_FireDefaultButton(event, target) {     var element = event.target || event.srcElement;     if (!__defaultFired && event.keyCode == 13 ...