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GridView加入自动求和求平均值小计

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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!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>GridView加入自动求和求平均值小计</title>

</head>

<body>

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

<div>

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="10" ForeColor="#333333" PageSize="3" ShowFooter="True" OnRowDataBound="GridView1_RowDataBound">

<FooterStyle BackColor="White" ForeColor="#000066" />

<Columns>

<asp:BoundField DataField="ID" HeaderText="用户ID" ReadOnly="True" />

<asp:BoundField DataField="Name" HeaderText="用户姓名" />

<asp:BoundField DataField="Sex" HeaderText="性别" />

<asp:BoundField DataField="Birthday" HeaderText="出生日期" DataFormatString="{0:yyyy年M月dd日}" HtmlEncode="False" />

<asp:BoundField DataField="Salary" HeaderText="薪水" />

<asp:BoundField DataField="Address" HeaderText="家庭住址" />

<asp:BoundField DataField="PostCode" HeaderText="邮政编码" />

</Columns>

<RowStyle ForeColor="#000066" />

<SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

<PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />

<HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

</asp:GridView>

</div>

</form>

</body>

</html>

using System;

using System.Data;

using System.Data.SqlClient;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page

{

SqlConnection sqlConn;

SqlCommand sqlComm;

string strConn = "Data Source=(local);Database=Exercise;Uid=sa;Pwd=sa";

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

databind();

}

}

private void databind()

{

string strSql = "select * from myDt";

sqlConn = new SqlConnection(strConn);

SqlDataAdapter sqlDa = new SqlDataAdapter(strSql, sqlConn);

DataSet ds = new DataSet();

sqlConn.Open();

sqlDa.Fill(ds, "myDt");

GridView1.DataSource = ds;

GridView1.DataKeyNames = new string[] { "ID" };

GridView1.DataBind();

for (int i = 0; i < GridView1.Rows.Count; i++)

{

DataRowView drv = ds.Tables["myDt"].DefaultView[i];

string strSalary = Convert.ToString(drv["Salary"]);

if (Convert.ToDouble(strSalary) < 2500)

{

GridView1.Rows[i].Cells[4].BackColor = System.Drawing.Color.Red;

}

}

sqlConn.Close();

}

double sum = 0;

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

{

if (e.Row.RowIndex >= 0)

{

sum += Convert.ToDouble(e.Row.Cells[4].Text);

}

else if(e.Row.RowType==DataControlRowType.Footer)

{

e.Row.Cells[3].Text = "总薪水为：";

e.Row.Cells[4].Text = sum.ToString();

e.Row.Cells[5].Text = "平均薪水为：";

e.Row.Cells[6].Text = ((int)(sum / GridView1.Rows.Count)).ToString();

}

}

}

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