GridView加入自动求和求平均值小计

GridView加入自动求和求平均值小计

效果图：

解决方案：

Code1



    
       1private 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
  2protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
 3{
 4 if (e.Row.RowIndex >= 0)
 5 {
 6 sum += Convert.ToDouble(e.Row.Cells[6].Text);
 7 }
 8 else if (e.Row.RowType == DataControlRowType.Footer)
 9 {
 10 e.Row.Cells[5].Text = "总薪水为：";
 11 e.Row.Cells[6].Text = sum.ToString();
 12 e.Row.Cells[3].Text = "平均薪水为：";
 13 e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString();
 14 }
 15}
 

后台代码



    
      1using System;
 2using System.Data;
 3using System.Configuration;
 4using System.Web;
 5using System.Web.Security;
 6using System.Web.UI;
 7using System.Web.UI.WebControls;
 8using System.Web.UI.WebControls.WebParts;
 9using System.Web.UI.HtmlControls;
 10using System.Data.SqlClient;
 11using System.Drawing;
 12public partial class Default7 : System.Web.UI.Page
 13{
 14 SqlConnection sqlcon;
 15 SqlCommand sqlcom;
 16 string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
 17 protected void Page_Load(object sender, EventArgs e)
 18 {
 19 if (!IsPostBack)
 20 {
 21 bind();
 22 }
 23 }
 24 protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
 25 {
 26 GridView1.EditIndex = e.NewEditIndex;
 27 bind();
 28 }
 29 protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
 30 {
 31 sqlcon = new SqlConnection(strCon);
 32 string sqlstr = "update 飞狐工作室 set 姓名='"
 33 + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
 34 + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='"
 35 + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
 36 sqlcom = new SqlCommand(sqlstr, sqlcon);
 37 sqlcon.Open();
 38 sqlcom.ExecuteNonQuery();
 39 sqlcon.Close();
 40 GridView1.EditIndex = -1;
 41 bind();
 42 }
 43 protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
 44 {
 45 GridView1.EditIndex = -1;
 46 bind();
 47 }
 48 public void bind()
 49 {
 50 string sqlstr = "select top 5 * from 飞狐工作室";
 51 sqlcon = new SqlConnection(strCon);
 52 SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
 53 DataSet myds = new DataSet();
 54 sqlcon.Open();
 55 myda.Fill(myds, "飞狐工作室");
 56 GridView1.DataSource = myds;
 57 GridView1.DataKeyNames = new string[] { "身份证号码" };
 58 GridView1.DataBind();
 59 sqlcon.Close();
 60 }
 61 private double sum = 0;//取指定列的数据和
 62 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
 63 {
 64 if (e.Row.RowIndex >= 0)
 65 {
 66 sum += Convert.ToDouble(e.Row.Cells[6].Text);
 67 }
 68 else if (e.Row.RowType == DataControlRowType.Footer)
 69 {
 70 e.Row.Cells[5].Text = "总薪水为：";
 71 e.Row.Cells[6].Text = sum.ToString();
 72 e.Row.Cells[3].Text = "平均薪水为：";
 73 e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString();
 74 }
 75 }
 76}
 

前台：唯一的花头就是设置ShowFooter="True" ，否则默认表头为隐藏的！

前台代码



    
       1<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowEditing="GridView1_RowEditing"
 2 OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound" ShowFooter="True" >
 3 <FooterStyle BackColor="White" ForeColor="#000066" />
 4 <Columns>
 5 <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
 6 <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
 7 <asp:BoundField DataField="姓名" HeaderText="姓名" />
 8 <asp:BoundField DataField="出生日期" HeaderText="邮政编码" />
 9 <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
 10 <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />
 11 <asp:BoundField DataField="起薪" HeaderText="起薪" />
 12 
 13 </Columns>
 14 <RowStyle ForeColor="#000066" />
 15 <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
 16 <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" CssClass="ms-formlabel DataGridFixedHeader"/>
 17 <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
 18</asp:GridView>
 

 

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转自:http://www.cnblogs.com/longshengqun/archive/2008/09/22/1296275.html

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