·您的位置: 首页 » 资源教程 » 编程开发 » ASP.NET » DataGrid同时具有分页和排序功能及注意点

DataGrid同时具有分页和排序功能及注意点

类别: ASP.NET教程  评论数:0 总得分:0
当DataGrid同时具有分页和排序功能时应注意在重新绑定数据源时,MyDataGrid.CurrentPageIndex=0;
下面给实现以上功能的原码,也就不多缀了aspx中包含有DataGrid和控制其数据源变化的dropdownlist
DataGrid代码
  <asp:datagrid id=\"MyDataGrid\" runat=\"server\" BorderColor=\"#CCCCCC\" Font-Size=\"100%\" HorizontalAlign=\"Center\"
            AutoGenerateColumns=\"False\" OnDeleteCommand=\"MyDataGrid_Delete\" OnSortCommand=\"Sort_Grid\" OnPageIndexChanged=\"MyDataGrid_PageIndexChanged\"
            DataKeyField=\"ACC_NO\" PagerStyle-Position=\"Bottom\" PagerStyle-HorizontalAlign=\"Center\" PagerStyle-Mode=\"NextPrev\"
            PageSize=\"10\" AllowSorting=\"True\" AllowPaging=\"True\" CellPadding=\"4\" Width=\"100%\">
            <AlternatingItemStyle BackColor=\"#E9E9E6\"></AlternatingItemStyle>
            <HeaderStyle Font-Bold=\"True\" Wrap=\"False\" ForeColor=\"White\" BackColor=\"#999999\"></HeaderStyle>
            <Columns>
             <asp:ButtonColumn Text=\"口\" CommandName=\"Delete\"></asp:ButtonColumn>
             <asp:BoundColumn DataField=\"NO\" SortExpression=\"NO\" ReadOnly=\"True\" HeaderText=\"序号\"></asp:BoundColumn>
             <asp:BoundColumn DataField=\"ID\" SortExpression=\"ID\" HeaderText=\"ID\"></asp:BoundColumn>
             <asp:BoundColumn DataField=\"NAME\" SortExpression=\"NAME\" HeaderText=\"名称\"></asp:BoundColumn>
             <asp:BoundColumn DataField=\"C_NAME\" SortExpression=\"C_NAME\" HeaderText=\"各科名称\"></asp:BoundColumn>
             <asp:BoundColumn DataField=\"FLG\" SortExpression=\"FLG\" HeaderText=\"项目\"></asp:BoundColumn>
            </Columns>
            <PagerStyle NextPageText=\"下10件\" PrevPageText=\"返回\" HorizontalAlign=\"Center\"></PagerStyle>
           </asp:datagrid>


dropdownlist代码
<asp:dropdownlist id=\"ddlWk\" Runat=\"server\" AutoPostBack=\"True\" Enabled=\"False\">
               <asp:ListItem Value=\"0\">东京</asp:ListItem>
               <asp:ListItem Value=\"3\">九州</asp:ListItem>
               <asp:ListItem Value=\"8\">北海道</asp:ListItem>
               <asp:ListItem Value=\"9\">四国</asp:ListItem>
              </asp:dropdownlist>

 

aspx.cs文件代码核心如下:
private void Page_Load(object sender, System.EventArgs e)
  {
   if(!IsPostBack)
   {
       Session[\"WP\"] =\"0\";
       ddlWk_getS();
       BindGrid();
   } 
  }
  private void ddlWk_getS()
  {
   switch (Session[\"WP\"].ToString())
   {
    case \"0\":ddlWk.SelectedIndex=0;
     break;
    case \"3\":ddlWk.SelectedIndex=1;
     break;
    case \"8\":ddlWk.SelectedIndex=2;
     break;
    case \"9\":ddlWk.SelectedIndex=3;
     break;
    default:ddlWk.SelectedIndex=0;
     break;
   }
  }
  protected void BindGrid()
  {
   MyDataGrid.DataSource=GetData().Tables[\"vCO\"].DefaultView;
   MyDataGrid.DataBind();
   //COUNT.Text=MyDataGrid.Columns.Count.ToString();
  }

  /// <summary>
  /// 返回Data
  /// </summary>
  ///<returns></returns>
  private DataSet GetData()
  {
   string strConn=(String) ((NameValueCollection) Context.GetConfig(\"system.web/database\"))[\"strConn\"];
   using (SqlConnection conn = new SqlConnection(strConn))
   {
    SqlCommand cmd = new SqlCommand(\"sp_C\",conn);
    cmd.CommandType=CommandType.StoredProcedure;
    cmd.Parameters.Add(\"@place\",SqlDbType.VarChar,2);
    cmd.Parameters[\"@place\"].Value=Session[\"WP\"].ToString();
    conn.Open();

    SqlDataAdapter da = new SqlDataAdapter();
    da.SelectCommand=cmd;
    DataSet ds=new DataSet();
    da.Fill(ds,\"vCO\");
    Count.Text=\"ヒット:\"+ds.Tables[\"vCO\"].Rows.Count.ToString()+\"件\";
    return ds;
   }

  }
  /// <summary>
  ///从DataSet中除一
  /// </summary>
  /// <param name=\"sender\"></param>
  /// <param name=\"E\"></param>
  protected void MyDataGrid_Delete(Object sender, DataGridCommandEventArgs E)
  {
    String strID=MyDataGrid.DataKeys[(int)E.Item.ItemIndex].ToString();
    //删除操作
  }
  /// <summary>
  /// 分页操作
  /// </summary>
  /// <param name=\"sender\"></param>
  /// <param name=\"e\"></param>
  protected void MyDataGrid_PageIndexChanged(object source, DataGridPageChangedEventArgs e)
  {
   MyDataGrid.CurrentPageIndex=e.NewPageIndex;
   BindGrid();
  }
  /// <summary>
  /// 排序
  /// </summary>
  /// <param name=\"sender\"></param>
  /// <param name=\"e\"></param>
  protected void Sort_Grid(object sender, DataGridSortCommandEventArgs e)
  {
   DataView dv= new DataView(GetData().Tables[\"vCO\"]);
   dv.Sort= e.SortExpression.ToString();
   MyDataGrid.DataSource=dv;
   MyDataGrid.DataBind();
  }

  #region Web   override protected void OnInit(EventArgs e)
  {
   //   //
   InitializeComponent();
   base.OnInit(e);
  }
 
  /// <summary>  /// </summary>
  private void InitializeComponent()
  {   
   this.ddlWk.SelectedIndexChanged += new System.EventHandler(this.ddlWk_SelectedIndexChanged);
   this.Load += new System.EventHandler(this.Page_Load);

  }
  #endregion

  private void ddlWk_SelectedIndexChanged(object sender, System.EventArgs e)
  {
   Session[\"WP\"]=ddlWk.SelectedValue;
   MyDataGrid.CurrentPageIndex=0;//没有这一句,当该页码超出其他数据源的范围时会出错
   BindGrid();
   Response.Write( \"<script language=\'javascript\'>parent.menuframe.location.reload();</script>\");
 
  }

-= 资 源 教 程 =-
文 章 搜 索
关键词:
类型:
范围:
纯粹空间 softpure.com
Copyright © 2006-2008 暖阳制作 版权所有
QQ: 15242663 (拒绝闲聊)  Email: faisun@sina.com
 纯粹空间 - 韩国酷站|酷站欣赏|教程大全|资源下载|免费博客|美女壁纸|设计素材|技术论坛   Valid XHTML 1.0 Transitional
百度搜索 谷歌搜索 Alexa搜索 | 粤ICP备19116064号-1