手工创建datagrid数据列/模板列/按钮事件+简单的数据操作类（asp.net）[3]

4）实例：创建数据源和创建datagrid数据列

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 Webtest
{
 /// <summary>
 /// WebForm1 的摘要说明。
 /// </summary>
 public class WebForm1 : System.Web.UI.Page
 {
  protected System.Web.UI.WebControls.DataGrid DataGrid1;
  protected System.Web.UI.WebControls.Button Button1;
 
  private void Page_Load(object sender, System.EventArgs e)
  {
   // 在此处放置用户代码以初始化页面
  }

  #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.ItemCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_ItemCommand);
   this.DataGrid1.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemDataBound);
   this.Button1.Click += new System.EventHandler(this.Button1_Click);
   this.Load += new System.EventHandler(this.Page_Load);

  }
  #endregion

  private void Button1_Click(object sender, System.EventArgs e)
  {
   initData();
  }
  string strconn="server=;user id=sa;password=;database=clothing";
  private void initData()
  {
  
   string strSql="select * from tblProduct";
   DataSet ds=new DataSet();
   ds=SqlAccess.getDataSet(this.strconn,strSql);

   this.DataGrid1.DataSource=ds.Tables[0].DefaultView;
   DataGridCols.CreateCols(this.DataGrid1,"Pro_ID","叙号",50);
   DataGridCols.CreateCols(this.DataGrid1,"Pro_Code","编号",50);
   DataGridCols.CreateCols(this.DataGrid1,"Pro_Name","名称",100);
   DataGridCols.CreateTemplateCol(this.DataGrid1,"Type","类型");
   DataGridCols.CreateButton(this.DataGrid1,"del","删除");
   this.DataGrid1.DataBind();
  }

  private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
  {
   string strSql="select * from tblProduct_Type";
   DataSet ds=new DataSet();
   ds=SqlAccess.getDataSet(this.strconn,strSql);
   if(e.Item.ItemType==ListItemType.Item||e.Item.ItemType==ListItemType.AlternatingItem)
   {
    DropDownList ddl=(DropDownList)e.Item.FindControl("Type");
    ddl.DataSource=ds.Tables[0];
    ddl.DataTextField="Type_Name";
    ddl.DataValueField="Type_ID";
    ddl.DataBind();
    ddl.Items.FindByValue(Convert.ToString(DataBinder.Eval(e.Item.DataItem,"Type_ID"))).Selected=true;
   }
  }