经典的GridView72种使用技巧(14)

sqlcon.Close(); } }

前台代码：

17.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 = \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 = \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()