asp.net webform自定义分页控件

网络编程 2024/11/16 佚名

3 2 1

无为清净楼资源网 Design By www.qnjia.com

做web开发一直用到分页控件，自己也动手实现了个，使用用户自定义控件。

翻页后数据加载使用委托，将具体实现放在在使用分页控件的页面进行注册。

有图有真相，给个直观的认识：

自定义分页控件前台代码：

<style type="text/css">
 .pager-m-l {
  margin-left: 10px;
 }

 .pager {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 14px;
  color: #333;
  background-color: #fff;
  text-align: center;
  border: 1px solid #eee;
  border-radius: 5px;
  height: 30px;
  line-height: 30px;
  margin: 10px auto;
  width: 650px;
 }

 .font-blue {
  color: #5bc0de;
 }

 .pager a {
  color: #5bc0de;
  text-decoration: none;
 }

  .pager a.gray {
   color: #808080;
  }

 .pager-num {
  width: 30px;
  text-align: center;
 }

 .pager-form-control {
  color: #555;
  background-color: #fff;
  background-image: none;
  border: 1px solid #ccc;
  border-radius: 4px;
  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
  -webkit-transition: border-color ease-in-out .15s, -webkit-box-shadow ease-in-out .15s;
  -o-transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;
  transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;
  padding: 2px 0px;
  margin: 0px 2px;
 }

  .pager-form-control:focus {
   border-color: #66afe9;
   outline: 0;
   -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, .6);
   box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, .6);
  }

 .btn {
  display: inline-block;
  padding: 2px;
  font-weight: normal;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  -ms-touch-action: manipulation;
  touch-action: manipulation;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  background-image: none;
  border: 1px solid transparent;
  border-radius: 4px;
 }

 .btn-default {
  color: #333;
  background-color: #fff;
  border-color: #ccc;
 }
</style>
<div class="pager">
 <span>当前<asp:Label runat="server" ID="labCurrentPageIndex" CssClass="font-blue"></asp:Label>/<asp:Label runat="server" CssClass="font-blue" ID="labTotalNumberOfPages"></asp:Label>页</span>
 <span class="pager-m-l">共<asp:Label runat="server" CssClass="font-blue" ID="labRecordCount"></asp:Label>条记录</span>
 <span class="pager-m-l">
  <asp:LinkButton runat="server" ID="labFirstPage" OnClick="labFirstPage_Click">首页</asp:LinkButton>
  |
  <asp:LinkButton runat="server" ID="labPreviousPage" OnClick="labPreviousPage_Click">上一页</asp:LinkButton>
  |<asp:LinkButton runat="server" ID="labNextPage" OnClick="labNextPage_Click">下一页</asp:LinkButton>
  |<asp:LinkButton runat="server" ID="labLastPage" OnClick="labLastPage_Click">尾页</asp:LinkButton>
 </span>
 <span class="pager-m-l">跳至<asp:TextBox runat="server" ID="txtPageNum" CssClass="pager-form-control pager-num">1</asp:TextBox>页
  <asp:Button runat="server" Text="GO" ID="btnGo" CssClass="btn btn-default" OnClick="btnGo_Click" /></span>
 <span class="pager-m-l">
  <asp:DropDownList runat="server" ID="ddlPageSize" CssClass="pager-form-control" AutoPostBack="true" OnSelectedIndexChanged="ddlPageSize_SelectedIndexChanged">
   <asp:ListItem Text="10" Value="10"></asp:ListItem>
   <asp:ListItem Text="20" Value="20"></asp:ListItem>
   <asp:ListItem Text="30" Value="30"></asp:ListItem>
   <asp:ListItem Text="50" Value="50"></asp:ListItem>
   <asp:ListItem Text="100" Value="100"></asp:ListItem>
  </asp:DropDownList>条/每页</span>
</div>

自定义分页控件后台代码：

private const string viewStateCurrentPageIndex = "CurrentPageIndex";
  private const string viewStateRecordCount = "RecordCount";

  public delegate void PageChangedHandle();
  public event PageChangedHandle OnPageChanged;

  public int PageSize
  {
   get
   {
    return Convert.ToInt32(ddlPageSize.SelectedValue);
   }
  }

  public int CurrentPageIndex
  {
   set
   {
    ViewState[viewStateCurrentPageIndex] = value;
   }
   get
   {
    if (ViewState[viewStateCurrentPageIndex] == null)
    {
     ViewState[viewStateCurrentPageIndex] = 1;
    }

    return Convert.ToInt32(ViewState[viewStateCurrentPageIndex]);
   }
  }
  public int RecordCount
  {
   get
   {
    if (ViewState[viewStateRecordCount] == null)
    {
     ViewState[viewStateRecordCount] = 0;
    }

    return Convert.ToInt32(ViewState[viewStateRecordCount]);
   }
   set
   {
    ViewState[viewStateRecordCount] = value;
   }
  }
  private int TotalNumberOfPages
  {
   get
   {
    return RecordCount % PageSize == 0 "font-blue";
   labPreviousPage.CssClass = "font-blue";
   labNextPage.CssClass = "font-blue";
   labLastPage.CssClass = "font-blue";

   if (CurrentPageIndex == 1)
   {
    labFirstPage.Enabled = false;
    labPreviousPage.Enabled = false;

    labFirstPage.CssClass = "gray";
    labPreviousPage.CssClass = "gray";
   }
   if (CurrentPageIndex == TotalNumberOfPages)
   {
    labNextPage.Enabled = false;
    labLastPage.Enabled = false;

    labNextPage.CssClass = "gray";
    labLastPage.CssClass = "gray";
   }
   if (RecordCount == 0)
   {
    labFirstPage.Enabled = false;
    labPreviousPage.Enabled = false;

    labFirstPage.CssClass = "gray";
    labPreviousPage.CssClass = "gray";

    labNextPage.Enabled = false;
    labLastPage.Enabled = false;

    labNextPage.CssClass = "gray";
    labLastPage.CssClass = "gray";
   }
  }

当前页码、总共多少条记录使用ViewState记录状态信息，因为导航控件会引起回发刷新。
分页后的数据加载，使用事件。

事件的具体实现放在使用分页控件的具体页面中，进行事件的注册。

测试分页控件的前台页面：

<div style="margin-bottom:10px;">
  text:
  <asp:TextBox ID="txtContent" runat="server"></asp:TextBox>
  <asp:Button ID="btnQuery" runat="server" Text="查 询" OnClick="btnQuery_Click"/>
 </div>
 <div>
  <asp:GridView ID="gvList" runat="server" Width="99%" AutoGenerateColumns="true"></asp:GridView>
  <uc1:PagerControl runat="server" ID="Pager" />
</div>

测试分页控件的后台代码：

 private const string dtSourceViewStateKey = "dtSourceViewStateKey";

 protected void Page_Load(object sender, EventArgs e)
 {
  if (!IsPostBack)
  {
  BindData(true);

  }
  Pager.OnPageChanged += OnPageChanged;
 }

 private void BindData(bool bindRecordCount)
 {
  DataTable dtSource = GetDataSource();
  

  var source = dtSource.AsEnumerable();
  if (!string.IsNullOrEmpty(txtContent.Text.Trim()))
  {
  source = source.Where(w => w.Field<string>("text").Contains(txtContent.Text.Trim()));
  }

  if (bindRecordCount)
  {
  Pager.RecordCount = source.Count();
  Pager.CurrentPageIndex = 1;
  Pager.DataBind();
  }

  gvList.DataSource = source
  .Skip((Pager.CurrentPageIndex - 1) * Pager.PageSize)
  .Take(Pager.PageSize)
  .Select(r => new { id = r["id"].ToString(), text = r["text"].ToString() })
  .ToList();
  gvList.DataBind();
 }

 private void OnPageChanged()
 {
  BindData(false);
 }

 private DataTable InitDataTable()
 {
  DataTable dtSource = new DataTable();
  DataColumn id = new DataColumn("id");
  id.AutoIncrement = true;
  id.AutoIncrementSeed = 1;

  dtSource.Columns.Add(id);
  dtSource.Columns.Add("text");

  for (int i = 1; i <= 1000; i++)
  {
  DataRow dr = dtSource.NewRow();
  dr["text"] = "内容" + i;

  dtSource.Rows.Add(dr);
  }

  return dtSource;
 }

 private DataTable GetDataSource()
 {
  if (ViewState[dtSourceViewStateKey] == null)
  {
  ViewState[dtSourceViewStateKey] = InitDataTable();
  }

  return ViewState[dtSourceViewStateKey] as DataTable;
 }

 protected void btnQuery_Click(object sender, EventArgs e)
 {
  BindData(true);
 }

在Page_Load中注册翻页后的事件。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。

asp.net,webform,分页控件

标签：

asp.net,webform,分页控件

无为清净楼资源网 Design By www.qnjia.com

广告合作：本站广告合作请联系QQ：858582 申请时备注：广告合作（否则不回）
免责声明：本站文章均来自网站采集或用户投稿，网站不提供任何软件下载或自行开发的软件！如有用户或公司发现本站内容信息存在侵权行为，请邮件告知！ 858582#qq.com

无为清净楼资源网 Design By www.qnjia.com

评论“asp.net webform自定义分页控件”

暂无评论...

www.qnjia.com 无为清净楼资源网

139,976互联网资源

144,792高清电影

21,817无损音乐

631,128技术资源

asp.net webform自定义分页控件

asp.net,webform,分页控件

asp.net mvc验证码类使用

asp.net音频转换之.amr转.mp3(利用ffmpeg转换法)

评论“asp.net webform自定义分页控件”

RTX 5090要首发性能要翻倍！三星展示GDDR7显存

更新日志

友情链接

asp.net webform自定义分页控件

asp.net,webform,分页控件

asp.net mvc验证码类使用

asp.net音频转换之.amr转.mp3(利用ffmpeg转换法)

评论“asp.net webform自定义分页控件”

RTX 5090要首发 性能要翻倍！三星展示GDDR7显存

更新日志

友情链接

RTX 5090要首发性能要翻倍！三星展示GDDR7显存