DataGrid中多栏显示为一栏/webForm

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using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

namespace WebApplication4
{
/// <summary>
/// WebForm1 的摘要说明。
/// </summary>
public class WebForm1 : System.Web.UI.Page
{
  protected System.Web.UI.WebControls.DataGrid DataGrid1;

  private void Page_Load(object sender, System.EventArgs e)
  {
   // 在此处放置用户代码以初始化页面
   SqlConnection sqlConn = new SqlConnection("server =127.0.0.1; database = pubs; uid=sa; pwd=");
   SqlDataAdapter sqlAda = new SqlDataAdapter("select * from authors",sqlConn);
//   SqlDataAdapter sqlAda = new SqlDataAdapter("select au_id, au_lname + au_fname as name, phone, address, city, state from authors",sqlConn);

   DataSet dsData = new DataSet("ds1");
   sqlAda.Fill(dsData);
   DataGrid1.DataSource = dsData;
   DataGrid1.DataBind();

}

  #region Web 窗体设计器生成的代码
  override protected void OnInit(EventArgs e)
  {
   //
   // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
   //
   InitializeComponent();
   base.OnInit(e);
  }

  /// <summary>
  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  /// </summary>
  private void InitializeComponent()
  {
   this.DataGrid1.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemDataBound);
   this.Load += new System.EventHandler(this.Page_Load);

}
#endregion

  private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
  {
   if(e.Item.ItemIndex != -1)
// if(e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.Item)
   {
    //e.Item.Cells[3].Text =((TextBox)(e.Item.Cells[1].Controls[0])).Text.ToString()+ ((TextBox)(e.Item.Cells[2].Controls[0])).Text.ToString();
    e.Item.Cells[3].Text = e.Item.Cells[1].Text.ToString() + e.Item.Cells[2].Text.ToString();

   }
   if(e.Item.ItemIndex == 5)
   {
    e.Item.Cells[0].Text = "我的定义";
   }

}
}
}