There are several types of row selection. In this example, end-users can select any row of the grid and then submit the form using a button.

After postback, you can retrieve the selected row(s) using the SelectedRows collection directly from the postback event handler of the button. This is a collection of string values representing the string value of the primary key of the selected row.
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="default.aspx.cs" Inherits="GridTest.examples.selection.selectedrow._default" %>
<%@ Register Assembly="Trirand.Web" TagPrefix="trirand" Namespace="Trirand.Web.UI.WebControls" %>

<!DOCTYPE html>
<html lang="en-us">
<head id="Head1" runat="server">
    <meta charset="utf-8">
    <title>jqGrid for ASP.NET WebForms - selected rows</title>
    <!-- The jQuery UI theme that will be used by the grid -->
    <link rel="stylesheet" type="text/css" media="screen" href="http://ajax.aspnetcdn.com/ajax/jquery.ui/1.11.4/themes/redmond/jquery-ui.css" />
    <!-- The jQuery UI theme extension jqGrid needs -->
    <link rel="stylesheet" type="text/css" media="screen" href="/themes/ui.jqgrid.css" />
    <!-- jQuery runtime minified -->
    <script src="http://ajax.microsoft.com/ajax/jquery/jquery-2.2.0.min.js" type="text/javascript"></script>
    <!-- The localization file we need, English in this case -->
    <script src="/js/trirand/i18n/grid.locale-en.js" type="text/javascript"></script>
    <!-- The jqGrid client-side javascript -->
    <script src="/js/trirand/jquery.jqGrid.min.js" type="text/javascript"></script>        
        
    <style type="text/css">    
        body, html { font-size: 80%; }    
    </style>
</head>


<body>
    <form id="form1" runat="server">

    <asp:SqlDataSource runat="server" ID="SqlDataSource1" 
        ConnectionString="<%$ ConnectionStrings:SQL2008_449777_fhsConnectionString %>"                 
        SelectCommand="SELECT [OrderID], [RequiredDate], [ShipName], [ShipCity], [Freight] FROM [Orders]">
    </asp:SqlDataSource>        
        
    <trirand:JQGrid runat="server" ID="JQGrid1" DataSourceID="SqlDataSource1" Width="600px" >
        <Columns>
            <trirand:JQGridColumn DataField="OrderID" HeaderText="Order ID" PrimaryKey="True" Width="50" />
            <trirand:JQGridColumn DataField="RequiredDate" DataFormatString="{0:d}"/>
            <trirand:JQGridColumn DataField="ShipName" Width="200" />
            <trirand:JQGridColumn DataField="ShipCity" />
            <trirand:JQGridColumn DataField="Freight" />
        </Columns>
        <ToolBarSettings ShowRefreshButton="true" ShowSearchButton="true" />
    </trirand:JQGrid>
    
    <br /><br />

    <asp:Label runat="server" ID="SelectedRowsMessage" style="font-size: 135%"></asp:Label>    
    <br />
    <asp:button runat="server" ID="PostBackButton" Text="Show Selected Rows" 
        onclick="PostBackButton_Click" />    
    
    <br /><br />
    
    <trirand:codetabs runat="server" id="tabs"></trirand:codetabs> 
 
    
    </form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace GridTest.examples.selection.selectedrow
{
    public partial class _default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void PostBackButton_Click(object sender, EventArgs e)
        {
            if (String.IsNullOrEmpty(JQGrid1.SelectedRow))
            {
                SelectedRowsMessage.Text = "No rows were selected";
            }
            else
            {
                SelectedRowsMessage.Text = String.Format("You selected {0}", JQGrid1.SelectedRow);
            }
        }
    }
}
Switch theme:


Theming is based on the very popular jQuery ThemeRoller standard. This is the same theming mechanism used by jQuery UI and is now a de-facto standard for jQuery based components. The benefits of using ThemeRoller are huge. We can offer a big set of ready to use themes created by professional designers, including Windows-like themes (Redmond), Apple-like theme (Cupertino), etc. In addition to that any jQuery UI controls on the same page will pick the same theme.

Last, but not least, you can always roll your own ThemeRoller theme, using the superb Theme Editor

To use a theme, simply reference 2 Css files in your Html <head> section - the ThemeRoller theme you wish to use, and the jqGrid own ThemeRoller Css file. For example (Redmond theme):

<link rel="stylesheet" type="text/css" media="screen" href="/themes/redmond/jquery-ui-1.8.2.custom.css" />
<link rel="stylesheet" type="text/css" media="screen" href="/themes/ui.jqgrid.css" />