这个循环应该怎么写？
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
int s7=4;
if (e.Row.RowType == DataControlRowType.DataRow)
{
e.Row.Cells.Add(new TableCell());
e.Row.Cells[s7].Attributes.Add("rowspan", "1");
for (int i = 0; i < GridView1.Rows.Count; i++)
{
GridView1.Rows[i].Cells[s7].Text = (Convert.ToInt32(GridView1.Rows[i].Cells[1].Text) + Convert.ToInt32(GridView1.Rows[i].Cells[2].Text) + Convert.ToInt32(GridView1.Rows[i].Cells[3].Text)).ToString();
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补充：
GridView1.Rows[i].Cells[s7].Text=(Convert.ToInt32(GridView1.Rows[i].Cells[1].Text)+省略号+(Convert.ToInt32(GridView1.Rows[i].Cells[s7-1].Text)).ToString();
我想问的是，假如s7是未知数，那么下面的那个循环语句中的语句应该怎么写？
for (int i = 0; i < GridView1.Rows.Count; i++)
{
GridView1.Rows[i].Cells[s7].Text = (Convert.ToInt32(GridView1.Rows[i].Cells[1].Text) + Convert.ToInt32(GridView1.Rows[i].Cells[2].Text) + Convert.ToInt32(GridView1.Rows[i].Cells[3].Text)).ToString();
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[解决办法]
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
int count=0;
for(int i=0;i<e.Row.Cells.Count;i++)
{
count+=Convert.ToInt32(e.Row.Cells[i].Text);
}
}
}
例子
<%@ Page Language="C#" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server"> protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { System.Data.DataTable dt = new System.Data.DataTable(); System.Data.DataRow dr; dt.Columns.Add(new System.Data.DataColumn("A", typeof(System.Int32))); dt.Columns.Add(new System.Data.DataColumn("B", typeof(System.Int32))); dt.Columns.Add(new System.Data.DataColumn("C", typeof(System.Int32))); dt.Columns.Add(new System.Data.DataColumn("Count", typeof(System.Int32))); System.Random rd = new System.Random(Environment.TickCount); ; for (int i = 0; i < 8; i++) { dr = dt.NewRow(); dr[0] = i; dr[1] = i*i; dr[2] = i*2; dr[3] = 0; dt.Rows.Add(dr); } GridView1.DataSource = dt; GridView1.DataBind(); } } protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.DataRow) { int totalCount = 0; for (int i = 0; i < e.Row.Cells.Count - 1; i++) { totalCount += Convert.ToInt32(e.Row.Cells[i].Text); } e.Row.Cells[3].Text = totalCount.ToString(); } }</script><html xmlns="http://www.w3.org/1999/xhtml"><head id="Head1" runat="server"> <title></title></head><body> <form id="form1" runat="server"> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="true" OnRowDataBound="GridView1_RowDataBound"> </asp:GridView> </form></body></html>