Formula applies to:

Formula type:

You can show a static footer for each column, which is always visible on scrolling. In order to show a footer, just set the AppearanceSettings.ShowFooter property to True.

Each column has a property called FooterValue. It is a string property and you can set it to any value you need. If you need to use formulae (like sum, count, average, min, max, etc) - you can use the DataRequested event to calculate the footer.

For detailed implementation, please take a look at the C# source code tab.
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="default.aspx.cs" Inherits="JQSuiteASPNETExample.examples.appearance.footer._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 - grid footer</title>
    <!-- The jQuery UI theme that will be used by the grid -->
    <link rel="stylesheet" type="text/css" media="screen" href="" />
    <!-- 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="/js/jquery-3.2.1.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%; }    
    <form id="form1" runat="server">

    <asp:SqlDataSource runat="server" ID="SqlDataSource1" 
        ConnectionString="<%$ ConnectionStrings:SQL2008_661086_trirandEntities %>"                 
        SelectCommand="SELECT [OrderID], [RequiredDate], [ShipName], [ShipCity], [Freight] FROM [Orders]">
    <table cellpadding="0" cellspacing="0" style="font-size: 125%; font-family: Verdana;">
            <td valign="top">
                Formula applies to:<br />
                <asp:RadioButtonList runat="server" ID="ApplyToRadio" AutoPostBack="true">
                    <asp:ListItem Value="Page" Selected="True">Current page only</asp:ListItem>
                    <asp:ListItem Value="DataSource">The whole datasource</asp:ListItem>
            <td valign="top">
                Formula type:<br />
                <asp:RadioButtonList runat="server" ID="FooterFormula" AutoPostBack="true">
                    <asp:ListItem Value="Sum" Selected="True">Sum</asp:ListItem>
                    <asp:ListItem Value="Average">Average</asp:ListItem>
                    <asp:ListItem Value="Min">Min</asp:ListItem>
                    <asp:ListItem Value="Max">Max</asp:ListItem>
    <div id="containerID" runat="server">
        <trirand:JQGrid runat="server" ID="JQGrid1" DataSourceID="SqlDataSource1" 
            Width="600px" ondatarequested="JQGrid1_DataRequested" >
                <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" FooterValue="Total:"/>
                <trirand:JQGridColumn DataField="Freight" />
            <AppearanceSettings ShowFooter="true" />            
    <br /><br />
    <trirand:codetabs runat="server" id="tabs"></trirand:codetabs>  
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;

namespace JQSuiteASPNETExample.examples.appearance.footer
    public partial class _default : System.Web.UI.Page
        protected override void OnInit(EventArgs e)
            ApplyToRadio.SelectedIndexChanged += new EventHandler(ApplyToRadio_SelectedIndexChanged);
            FooterFormula.SelectedIndexChanged += new EventHandler(FooterFormula_SelectedIndexChanged);

        void FooterFormula_SelectedIndexChanged(object sender, EventArgs e)
            // we are using Session to store selection, since the grid makes lightweight GET AJAX requests and there is no ViewState
            Session["FooterFormula"] = FooterFormula.SelectedValue;

        void ApplyToRadio_SelectedIndexChanged(object sender, EventArgs e)
            // we are using Session to store selection, since the grid makes lightweight GET AJAX requests and there is no ViewState
            Session["AppliesTo"] = ApplyToRadio.SelectedValue;

        protected void JQGrid1_DataRequested(object sender, Trirand.Web.UI.WebControls.JQGridDataRequestedEventArgs e)
            string appliesTo = Session["AppliesTo"] != null ? Session["AppliesTo"] as String : "Page";
            string footerForumla = Session["FooterFormula"] != null ? Session["FooterFormula"] as String : "Sum";

            DataTable dt;
            if (appliesTo == "Page")
                dt = e.DataTable; // get only the current page data
                dt = GetAllOrders();
            decimal freightTotal = 0; // get the whole datasource
            decimal freightMin = decimal.MaxValue;
            decimal freightMax = decimal.MinValue;

            foreach (DataRow row in dt.Rows)
                decimal freightValue = (decimal)row["Freight"];
                if (freightMin > freightValue)
                    freightMin = freightValue;
                if (freightMax < freightValue)
                    freightMax = freightValue;                
                freightTotal += freightValue;

            switch (footerForumla)
                case "Sum" :
                    JQGrid1.Columns.FromDataField("Freight").FooterValue = freightTotal.ToString();
                    JQGrid1.Columns.FromDataField("ShipCity").FooterValue = "Total:";
                case "Min":
                    JQGrid1.Columns.FromDataField("Freight").FooterValue = freightMin.ToString();
                    JQGrid1.Columns.FromDataField("ShipCity").FooterValue = "Min:";
                case "Max":
                    JQGrid1.Columns.FromDataField("Freight").FooterValue = freightMax.ToString();
                    JQGrid1.Columns.FromDataField("ShipCity").FooterValue = "Max:";
                case "Average":
                    JQGrid1.Columns.FromDataField("Freight").FooterValue = (freightTotal / dt.Rows.Count).ToString();
                    JQGrid1.Columns.FromDataField("ShipCity").FooterValue = "Avg:";

        protected DataTable GetAllOrders()
            // Create a new Sql Connection and set connection string accordingly
            SqlConnection sqlConnection = new SqlConnection();
            sqlConnection.ConnectionString = ConfigurationManager.ConnectionStrings["SQL2008_661086_trirandEntities"].ConnectionString;

            string sqlStatement = "SELECT [OrderID], [RequiredDate], [ShipName], [ShipCity], [Freight] FROM [Orders]";

            // Create a SqlDataAdapter to get the results as DataTable
            SqlDataAdapter sqlDataAdapter = new SqlDataAdapter(sqlStatement, sqlConnection);

            // Create a new DataTable
            DataTable dtResult = new DataTable();

            // Fill the DataTable with the result of the SQL statement

            return dtResult;
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" />