Gridview中实现求和统计功能

时间：2014-03-11 01:32:13 收藏：0 阅读：435
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GridView加入自动求和求平均值小计
 
效果图：
  
解决方案：    
private 
double sum = 0; //取指定列的数据和，你要根据具体情况对待可能你要处理的是int
protected 
void GridView1_RowDataBound(object 
sender, GridViewRowEventArgs e)
    {
         
        if 
(e.Row.RowIndex >= 0)
        {
            sum += Convert.ToDouble(e.Row.Cells[6].Text);
        }
        else 
if (e.Row.RowType == DataControlRowType.Footer)
        {
            e.Row.Cells[5].Text = "总薪水为：";
            e.Row.Cells[6].Text = sum.ToString();
            e.Row.Cells[3].Text = "平均薪水为：";
            e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString();
             
        }
    }
后台全部代码：
using 
System;
using 
System.Data;
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;
using 
System.Data.SqlClient;
using 
System.Drawing;
public 
partial class Default7 : System.Web.UI.Page
{
    SqlConnection sqlcon;
    SqlCommand sqlcom;
    string 
strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
    protected 
void Page_Load(object 
sender, EventArgs e)
    {
        if 
(!IsPostBack)
        {
            bind();
        }
    }
    protected 
void GridView1_RowEditing(object 
sender, GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        bind();
    }
    protected 
void GridView1_RowUpdating(object 
sender, GridViewUpdateEventArgs e)
    {
        sqlcon = new 
SqlConnection(strCon);
        string 
sqlstr = "update 飞狐工作室 set 姓名=‘"
            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "‘,家庭住址=‘"
            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "‘ where 身份证号码=‘"
            + GridView1.DataKeys[e.RowIndex].Value.ToString() + "‘";
        sqlcom = new 
SqlCommand(sqlstr, sqlcon);
        sqlcon.Open();
        sqlcom.ExecuteNonQuery();
        sqlcon.Close();
        GridView1.EditIndex = -1;
        bind();
    }
    protected 
void GridView1_RowCancelingEdit(object 
sender, GridViewCancelEditEventArgs e)
    {
        GridView1.EditIndex = -1;
        bind();
    }
    public 
void bind()
    {
        string 
sqlstr = "select top 5 * from 编程中国社区";
        sqlcon = new 
SqlConnection(strCon);
        SqlDataAdapter myda = new 
SqlDataAdapter(sqlstr, sqlcon);
        DataSet myds = new 
DataSet();
        sqlcon.Open();
        myda.Fill(myds, "编程中国社区");
        GridView1.DataSource = myds;
        GridView1.DataKeyNames = new 
string[] { "身份证号码" 
};
        GridView1.DataBind();
        sqlcon.Close();
    }
    private 
double sum = 0; //取指定列的数据和
    protected 
void GridView1_RowDataBound(object 
sender, GridViewRowEventArgs e)
    {
         
        if 
(e.Row.RowIndex >= 0)
        {
            sum += Convert.ToDouble(e.Row.Cells[6].Text);
        }
        else 
if (e.Row.RowType == DataControlRowType.Footer)
        {
            e.Row.Cells[5].Text = "总薪水为：";
            e.Row.Cells[6].Text = sum.ToString();
            e.Row.Cells[3].Text = "平均薪水为：";
            e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString();
             
        }
    }
}
前台：唯一的花头就是设置ShowFooter="True" 
，否则默认表头为隐藏的！
<asp:GridView ID="GridView1" 
runat="server"    
AutoGenerateColumns="False" 
CellPadding="3"  
OnRowEditing="GridView1_RowEditing"
                        OnRowUpdating="GridView1_RowUpdating" 
OnRowCancelingEdit="GridView1_RowCancelingEdit" 
BackColor="White" 
BorderColor="#CCCCCC" 
BorderStyle="None" 
BorderWidth="1px" 
Font-Size="12px" 
OnRowDataBound="GridView1_RowDataBound" 
ShowFooter="True"  
>
                        <FooterStyle BackColor="White" 
ForeColor="#000066" 
/>
                        <Columns>
                            <asp:CommandField HeaderText="编辑" 
ShowEditButton="True" 
/>
                            <asp:BoundField DataField="身份证号码" 
HeaderText="编号" 
ReadOnly="True" 
/>
                            <asp:BoundField DataField="姓名" 
HeaderText="姓名"  
/>
                            <asp:BoundField DataField="出生日期" 
HeaderText="邮政编码"  
/>
                            <asp:BoundField DataField="家庭住址" 
HeaderText="家庭住址"  
/>
                            <asp:BoundField DataField="邮政编码" 
HeaderText="邮政编码" 
/>
                            <asp:BoundField DataField="起薪" 
HeaderText="起薪"  
/>
                            
                        </Columns>
                        <RowStyle ForeColor="#000066" 
/>
                        <SelectedRowStyle BackColor="#669999" 
Font-Bold="True" 
ForeColor="White" 
/>
                        <PagerStyle BackColor="White" 
ForeColor="#000066" 
HorizontalAlign="Left"  
CssClass="ms-formlabel DataGridFixedHeader"/>
                        <HeaderStyle BackColor="#006699" 
Font-Bold="True" 
ForeColor="White" 
/>
                    </asp:GridView>
Gridview中实现求和统计功能,布布扣,bubuko.com
原文：http://www.cnblogs.com/shangshen/p/3592197.html