怎样在Sharepoint webpart中写 Repeat 、datalist 、datagrid ,读懂这段代码应该可以解决这类问题了

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　　using System;
using System.ComponentModel;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml.Serialization;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Utilities;
using Microsoft.SharePoint.WebPartPages;
using System.Data;
using System.Data.SqlClient;
using Microsoft.ApplicationBlocks.Data;
　　namespace Sample.NewInfo
{
/// <summary>
/// Description for NewInformation.
/// </summary>
[DefaultProperty("Text"),
  ToolboxData("<{0}:NewInformation runat=server></{0}:NewInformation>"),
  XmlRoot(Namespace="NewInfo")]
public class NewInformation : Microsoft.SharePoint.WebPartPages.WebPart
{
  private const string defaultText = "";
　　private string text = defaultText;
  protected System.Web.UI.WebControls.Repeater Repeater1;
　　[Browsable(true),
   Category("Miscellaneous"),
   DefaultValue(defaultText),
   WebPartStorage(Storage.Personal),
   FriendlyName("Text"),
   Description("Text Property")]
  public string Text
  {
   get
   {
    return text;
   }
　　set
   {
    text = value;
   }
  }

　　
  protected override void CreateChildControls()
  {
   Repeater1=new Repeater();
   Repeater1.ItemTemplate=new RepiTemplate();
   try
   {
    string strConn = System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"];
    DataSet dsInfo = SqlHelper.ExecuteDataset(strConn,CommandType.Text,"SELECT TOP 10 * FROM NewInfo ORDER BY PublishDate DESC");
     
    Repeater1.DataSource=dsInfo;
    Repeater1.DataBind();
   }
   catch (Exception ex)
   {
    throw ex;
   }
   this.Controls.Add(Repeater1);
   base.CreateChildControls ();
  }
　　
　　/// <summary>
  /// Render this Web Part to the output parameter specified.
  /// </summary>
  /// <param name="output"> The HTML writer to write out to </param>
  protected override void RenderWebPart(HtmlTextWriter output)
  {
　　output.Write("<div id='demo'  style='overflow:hidden;height:200;width:150;vertical-align:middle'><div id='demo1' style='vertical-align:middle'>");
   Repeater1.RenderControl(output);
   output.Write("</div><div id='demo2'  style='vertical-align:middle'></div></div>");
   output.Write(@"<script Language=Javascript>
      var speed=200;
      demo2.innerHTML=demo1.innerHTML
      function Marquee()
      {
      if(demo2.offsetTop-demo.scrollTop<=0)
      demo.scrollTop-=demo1.offsetHeight;
      else
      demo.scrollTop+=2;
      }
      var MyMar=setInterval(Marquee,speed)
      demo.onmouseover=function() {clearInterval(MyMar)}
      demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}
      </script>");
　　}
}
　　class RepiTemplate:ITemplate
{
  public RepiTemplate(){}
　　  public void InstantiateIn(Control wc)
  {
   Literal l=new Literal();
   l.DataBinding+=new EventHandler(this.BindData);
   wc.Controls.Add(l);
  }
  public void BindData(object Sender,EventArgs e)
  {
   Literal l=(Literal)Sender;
   System.Web.UI.WebControls.RepeaterItem Con=(System.Web.UI.WebControls.RepeaterItem)l.NamingContainer;
   l.Text ="&#183;<a href='"+((DataRowView)Con.DataItem)["URL"].ToString()+"'>"+((DataRowView)Con.DataItem)["Title"].ToString()+"</a><BR><BR>";
  }
}
　　}