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How to display gridview summary footer

Hi,
I am trying to display summary total of the 'Price' column in a gridview footer, I have tried to follow the example on www.asp.net turorials section but cannot seem to get this to work with my database. The page loads without any errors and displays the grid with data but does not display any totals in the footer.

Here is the code I am using;

Sql;
SELECT        Date, Purchase_Order_number, Job_Number, Price, Invoiced, Paid
FROM            dbo.Purchase_Orders
WHERE        (Paid = 0)

GridView;
                    <asp:GridView ID="Postotal" runat="server" AutoGenerateColumns="False"
                        DataKeyNames="Purchase_Order_number" DataSourceID="ObjectDataSource1"
                        ShowFooter="True">
                        <Columns>
                            <asp:BoundField DataField="Date" HeaderText="Date" SortExpression="Date" />
                            <asp:BoundField DataField="Purchase_Order_number"
                                HeaderText="Purchase_Order_number" InsertVisible="False" ReadOnly="True"
                                SortExpression="Purchase_Order_number" />
                            <asp:BoundField DataField="Job_Number" HeaderText="Job_Number"
                                SortExpression="Job_Number" />
                            <asp:BoundField DataField="Price" HeaderText="Price" SortExpression="Price" />
                            <asp:CheckBoxField DataField="Invoiced" HeaderText="Invoiced"
                                SortExpression="Invoiced" />
                            <asp:CheckBoxField DataField="Paid" HeaderText="Paid" SortExpression="Paid" />
                        </Columns>
                    </asp:GridView>
                    <asp:ObjectDataSource ID="ObjectDataSource1" runat="server"
                        DeleteMethod="Delete" InsertMethod="Insert"
                        OldValuesParameterFormatString="original_{0}" SelectMethod="GetPos"
                        TypeName="accountsTableAdapters.Purchase_OrdersTableAdapter"
                        UpdateMethod="Update">
Code Behind;
public partial class CustomFormatting_SummaryDataInFooter : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    // Class-scope, running total variables...
    decimal _totalPrice = 0m;
    int _totalNonNullPriceCount = 0;

    protected void Postotal_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            // Reference the ProductsRow via the e.Row.DataItem property
            accounts.Purchase_OrdersRow product = (accounts.Purchase_OrdersRow)((System.Data.DataRowView)e.Row.DataItem).Row;

            // Increment the running totals (if they're not NULL!)
            if (!product.IsPriceNull())
            {
                _totalPrice += product.Price;
                _totalNonNullPriceCount++;
            }
        }
        else if (e.Row.RowType == DataControlRowType.Footer)
        {
            // Display the summary data in the appropriate cells
            e.Row.Cells[1].Text = "Total.: " + _totalPrice.ToString();
        }
    }

}

Thanks


Chris
0
chrispaton
Asked:
chrispaton
  • 6
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1 Solution
 
jandromedaCommented:
Have you assigned the RowDataBound event handler to the GridView's RowDataBound event?
0
 
jandromedaCommented:
Replace your Grid View definition with this.
<asp:GridView ID="Postotal" runat="server" AutoGenerateColumns="False"
                        DataKeyNames="Purchase_Order_number" DataSourceID="ObjectDataSource1"
                        ShowFooter="True" onrowdatabound="Postotal_RowDataBound_RowDataBound">

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0
 
chrispatonAuthor Commented:
I have tried changing the Gridview as suggested but get a compilation error;
does not contain a definition for 'Postotal_RowDataBound_RowDataBound'

I have tried chainging the onrowdatabound to onrowdatabound="Postotal_RowDataBound" but still get error does not contain a definition for 'Postotal_RowDataBound'
0
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jandromedaCommented:
Oops! my mistake. But you have corrected it. What is the compiler error message you get now? I have included the corrected code.
<asp:GridView ID="Postotal" runat="server" AutoGenerateColumns="False"
                        DataKeyNames="Purchase_Order_number" DataSourceID="ObjectDataSource1"
                        ShowFooter="True" onrowdatabound="Postotal_RowDataBound">

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0
 
chrispatonAuthor Commented:
This is the error message;

Compiler Error Message: CS0117: 'ASP.pos_totals_aspx' does not contain a definition for 'Postotal_RowDataBound'

but the Postotal_RowDataBound' does exist in the code.
0
 
jandromedaCommented:
Can you post the aspx page code and code behind code? If you do not like to post the full code, just the @Page directive of the aspx page and the class definition of the code behind is enough.
0
 
chrispatonAuthor Commented:
Here is the code;

I am using Visual Studio 2008 and .net 2.0
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="pos_totals.aspx.cs" Inherits="pos_totals" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Logs-Purchase Orders</title>
    <link href="includes/StyleSheet.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div align="left">
<table width="100%" class="top_bar" cellpadding="5" cellspacing="0">
    <tr>
        <td>
            <img src="images/logo.jpg" />   
        </td>
    </tr>
</table>
</div>
     <form id="form1" runat="server">
<div align="left">
<table class="navigation_bar">
    <tr>
        <td>
        <asp:HyperLink ID="HyperLink6" runat="server" NavigateUrl="http://companyweb/default.aspx" class="link-navig">Intranet Home</asp:HyperLink>&nbsp &nbsp &nbsp &nbsp &nbsp   
        <asp:HyperLink ID="HyperLink2" runat="server" NavigateUrl="~/default.aspx" class="link-navig">Home</asp:HyperLink>&nbsp &nbsp &nbsp &nbsp &nbsp   
        </td>
        <td align="right">
        <strong>Accounts</strong>
        </td>
    </tr>
</table>
</div>
<div>
   <table width="100%">
        <tr valign="top">
            <td width="50" align="left">    
                <!-- #Include File="includes/tree_navigation.inc" -->
            </td>
            <td>
                <div align="center">
                    <h3>POs to be Paid</h3>
                                        <br />
                    &nbsp;<br />
                    &nbsp; &nbsp;&nbsp;
 
                        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
                        DataKeyNames="Purchase_Order_number" DataSourceID="ObjectDataSource1"
                        ShowFooter="True" onrowdatabound="Postotal_RowDataBound">
                        <Columns>
                            <asp:BoundField DataField="Date" HeaderText="Date" SortExpression="Date" />
                            <asp:BoundField DataField="Purchase_Order_number" 
                                HeaderText="Purchase_Order_number" InsertVisible="False" ReadOnly="True" 
                                SortExpression="Purchase_Order_number" />
                            <asp:BoundField DataField="Job_Number" HeaderText="Job_Number" 
                                SortExpression="Job_Number" />
                            <asp:BoundField DataField="Price" HeaderText="Price" SortExpression="Price" />
                            <asp:CheckBoxField DataField="Invoiced" HeaderText="Invoiced" 
                                SortExpression="Invoiced" />
                            <asp:CheckBoxField DataField="Paid" HeaderText="Paid" SortExpression="Paid" />
                        </Columns>
                    </asp:GridView>
                    <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" 
                        DeleteMethod="Delete" InsertMethod="Insert" 
                        OldValuesParameterFormatString="original_{0}" SelectMethod="GetPos" 
                        TypeName="accountsTableAdapters.Purchase_OrdersTableAdapter" 
                        UpdateMethod="Update">
                        <DeleteParameters>
                            <asp:Parameter Name="Original_Purchase_Order_number" Type="Int32" />
                        </DeleteParameters>
                        <UpdateParameters>
                            <asp:Parameter Name="Date" Type="DateTime" />
                            <asp:Parameter Name="Job_Number" Type="Int32" />
                            <asp:Parameter Name="Price" Type="Decimal" />
                            <asp:Parameter Name="Invoiced" Type="Boolean" />
                            <asp:Parameter Name="Paid" Type="Boolean" />
                            <asp:Parameter Name="Original_Purchase_Order_number" Type="Int32" />
                        </UpdateParameters>
                        <InsertParameters>
                            <asp:Parameter Name="Date" Type="DateTime" />
                            <asp:Parameter Name="Job_Number" Type="Int32" />
                            <asp:Parameter Name="Price" Type="Decimal" />
                            <asp:Parameter Name="Invoiced" Type="Boolean" />
                            <asp:Parameter Name="Paid" Type="Boolean" />
                        </InsertParameters>
                    </asp:ObjectDataSource>
                       </div>
            </td>
        </tr>
    </table>
</div>   
 
    </form>
 
</body>
</html>
 
using System;
using System.Collections;
using System.Configuration;
using System.Data;
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;
 
public partial class pos_totals : System.Web.UI.Page
{
}
 
public partial class CustomFormatting_SummaryDataInFooter : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
 
    }
 
    // Class-scope, running total variables...
    decimal _totalPrice = 0m;
    int _totalNonNullPriceCount = 0;
 
    protected void Postotal_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            // Reference the ProductsRow via the e.Row.DataItem property
            accounts.Purchase_OrdersRow product = (accounts.Purchase_OrdersRow)((System.Data.DataRowView)e.Row.DataItem).Row;
 
            // Increment the running totals (if they're not NULL!)
            if (!product.IsPriceNull())
            {
                _totalPrice += product.Price;
                _totalNonNullPriceCount++;
            }
        }
        else if (e.Row.RowType == DataControlRowType.Footer)
        {
            // Display the summary data in the appropriate cells
            e.Row.Cells[1].Text = "Total.: " + _totalPrice.ToString();
        }
    }
 
}

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0
 
jandromedaCommented:
The Postotal_RowDataBound event is in the CustomFormatting_SummaryDataInFooter class not in the pos_totals class. Add that event to the pos_totals class. pos_totals is the code behind of your aspx page not CustomFormatting_SummaryDataInFooter class.
0
 
chrispatonAuthor Commented:
Perfect, it works!!

Thanks for your help jandromeda

Chris
0
 
chrispatonAuthor Commented:
Thanks for your help, Chris
0
 
jandromedaCommented:
You are welcome Chris. Happy coding! :)
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