Introduction to repeater and paging effect in .NET-C#.Net Tutorial-php.cn

Introduction to repeater and paging effect in .NET

高洛峰

Release： 2017-02-08 09:08:49

Original

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The Repeater control is a data-binding container control that can generate a list of each item and can use templates to define the layout of each item on the web page. When the page runs, the control repeats this layout for each item in the data source.

Use the repeater control with a template

To use the repeater control, you need to create a template that defines the content layout of the control. Templates can contain any combination of markup and controls. If the template is not defined, or if the template contains no elements, the control does not appear on the page when the application runs.

ItemTemplate: Contains HTML elements and controls that are rendered once for each data item in the data source.

AlternatingItemTemplate : Format alternating data items (contains HTML elements and controls to be rendered once for each data item in the data source. Typically, you can use this template to create different appearances for alternating items, For example, specify a background color that is different from the color specified in the ItemTemplate).

SeparatorTemplate : Format the separator (the element contained between each item that is rendered.).

HeaderTemplate : Format the header (contains text and controls that are rendered separately at the beginning of the list.).

FooterTemplate : Format the footer (contains text and controls that are rendered separately at the end of the list.).

Repeater paging effect is as follows:

Foreground code:


 
  
  用户名注册时间访问量
  
  
  
  
  
   <%#Eval("Username") %>
   <%#Eval("RegistrationTime") %>
   <%#Eval("AccessAmount") %>
  
  
   
  
  
  
  
  
 
  
  共 页
  第 页
   首页
  上一页
  下一页
   尾页

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Backend code:

protected void Page_Load(object sender, EventArgs e)
 {
  if(!Page.IsPostBack)
  {
  getUsers();
  }
 }
 private void getUsers()
 {
  List list = new AdminManager().QueryUsers();　　　　
  PagedDataSource pag = new PagedDataSource();
  pag.AllowPaging = true;// 设置允许分页
  pag.PageSize = 10; // 每页显示为3行
  pag.DataSource = list; // 模板绑定数据源 
  zong.Text = pag.PageCount.ToString(); // 显示总共页数
  int CurrentPage;
  // 请求页码为不为null设置当前页，否则为第一页
  if (Request.QueryString["Page"] != null)
  {
 
  CurrentPage = Convert.ToInt32(Request.QueryString["Page"]);
  }
  else
  {
  CurrentPage = 1;
  }
  if (Request.QueryString["PageSize"] != null)
  {
  pag.PageSize = Convert.ToInt32(Request.QueryString["PageSize"]);
  }
  else
  {
  pag.PageSize = 10;
  }
  pag.CurrentPageIndex = CurrentPage - 1; // 当前页所引为页码-1
  dangqian.Text = CurrentPage.ToString(); // 当前页
  if (!pag.IsFirstPage)
  {
  //  Request.CurrentExecutionFilePath为当前请求虚拟路径
  lnkPrev.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(CurrentPage - 1);
  } 
  // 如果不是最后一页，通过参数Page设置下一页为当前页+1，否则不显示连接
  if (!pag.IsLastPage)
  {
  // Request.CurrentExecutionFilePath为当前请求虚拟路径
  lnkNext.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(CurrentPage + 1);
  }
  //首页
  first.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(1);
  //尾页
  end.NavigateUrl = Request.CurrentExecutionFilePath + "?page=" + pag.PageCount.ToString(); 
  if (Convert.ToInt32(HttpContext.Current.Request["page"]) > pag.PageCount)
  {  
  first.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(1);
  }
  this.Repeater1.DataSource = pag;
  this.Repeater1.DataBind();
 }

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If paging is not required, you can execute the following code:

protected void Page_Load(object sender, EventArgs e)
{
　　if(!Page.IsPostBack)
 {
 　　getUsers();
 }
}
private void getUsers()
{
　　List list = new AdminManager().QueryUsers(); 
 this.Repeater1.DataSource = list ;
 this.Repeater1.DataBind();
}

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