C中的嵌套中继器＃

嗨我必须在中继器中显示分层信息（它有四个级别）。为此我决定使用嵌套中继器控制。我在MSDN上找到了这篇文章，http://support.microsoft.com/kb/306154，它显示了如何使用嵌套中继器获得两个级别的信息。有人可以帮我把这个延伸到四个级别吗？一个示例代码将非常appriciated。谢谢。C中的嵌套中继器＃

来源

2013-07-01 Gayanee Wijayasekara

HTML代码：

<asp:Repeater ID="Repeater1" runat="server" 
     onitemdatabound="Repeater1_ItemDataBound"> 
     <ItemTemplate> 
      <h1> 
       Repeater 1</h1> 
      <asp:Repeater ID="Repeater2" runat="server" onitemdatabound="Repeater2_ItemDataBound"> 
       <ItemTemplate> 
        <h1> 
         Repeater 2 
        </h1> 
        <asp:Repeater ID="Repeater3" runat="server" onitemdatabound="Repeater3_ItemDataBound"> 
         <ItemTemplate> 
          <h1> 
           Repeater 3 
          </h1> 
          <asp:Repeater ID="Repeater4" runat="server" onitemdatabound="Repeater4_ItemDataBound"> 
           <ItemTemplate> 
            <h1> 
             Repeater 4 
            </h1> 
           </ItemTemplate> 
          </asp:Repeater> 
         </ItemTemplate> 
        </asp:Repeater> 
       </ItemTemplate> 
      </asp:Repeater> 
     </ItemTemplate> 
    </asp:Repeater>

C＃代码：

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Web.UI; 
using System.Web.UI.WebControls; 
using System.Data; 

public partial class _Default : System.Web.UI.Page 
{ 
    protected void Page_Load(object sender, EventArgs e) 
    { 
     DataTable dt1 = new DataTable(); 
     //Need to assign the Data in datatable 
     Repeater1.DataSource = dt1; 
     Repeater1.DataBind(); 

    } 
    protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e) 
    { 
     if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) 
     { 
      Repeater Repeater2 = (Repeater)(e.Item.FindControl("Repeater2")); 

      DataTable dt2 = new DataTable(); 
      //Need to assign the Data in datatable 
      Repeater2.DataSource = dt2; 
      Repeater2.DataBind(); 
     } 

    } 
    protected void Repeater2_ItemDataBound(object sender, RepeaterItemEventArgs e) 
    { 
     if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) 
     { 
      Repeater Repeater3 = (Repeater)(e.Item.FindControl("Repeater3")); 

      DataTable dt3 = new DataTable(); 
      //Need to assign the Data in datatable 
      Repeater3.DataSource = dt3; 
      Repeater3.DataBind(); 
     } 

    } 

    protected void Repeater3_ItemDataBound(object sender, RepeaterItemEventArgs e) 
    { 
     if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) 
     { 
      Repeater Repeater4 = (Repeater)(e.Item.FindControl("Repeater4")); 

      DataTable dt4 = new DataTable(); 
      //Need to assign the Data in datatable 
      Repeater4.DataSource = dt4; 
      Repeater4.DataBind(); 
     } 

    } 
}

来源

2013-07-01 06:32:26

我有必须使用中继器来填充所需的数据的四个表。（R1-T1，R2-T2，R3-T3，R4-T4）。 T1，T2，T3，T4全部使用具有1：M关系的外键连接。因此，一旦父母中继器被填充，我如何提取该特定父母的详细信息给子代中继器。请帮忙。谢谢:) @ Deepak.Aggrawal –

您可以通过DataBinder.Eval（e.Item.DataItem，“T1”）获取DataBound中的Id并根据您的父ID过滤您的结果。 –

嵌套中继器（子中继器）应只显示与其父中继器相关的详细信息。我怎么能做到这一点？你能否详细说说你多说了些什么？谢谢。 @ Deepak.Aggrawal –

在互联网上有很多可用的例子。以下是其中一些。

http://www.codeproject.com/Tips/563919/Nested-Repeater-Controls-in-ASP-NET

http://support.microsoft.com/kb/326338

从下面的链接，您可以下载代码也。 http://everymanprogrammer.com/index.php/nested-repeaters-do-it-clean-and-simple-a-beginners-tutorial-part-2/

来源

2013-07-01 06:24:06

大厦，而不是建立你的表中的ItemDataBound功能上的第一个答案，你可以通过在您的表格数据Page_Load，将其设置为ViewState变量，然后在绑定时检索它：

private DataTable GetCachedDataTable(string strTable) 
{ 
    DataTable dtableCached = (DataTable)this.ViewState[strTableCache]; 
    return dtableCached; 
} 
protected void Page_Load(object sender, EventArgs e) 
{ 
    if (!Page.IsPostBack) 
    { 
     this.ViewState["TblTwo_Cache"] = null; 
     DataTable tblOne = new DataTable(); 
     DataTable tblTwo = new DataTable(); 
     myFunctionReturningTwoTables(ref tblOne, ref tblTwo); 

     // Bind the first one 
     if (tblOne != null) 
     { 
      // This first line assumes an <asp:Panel ID=pnlMain runat=server> 
      // tag is added in front of the Repeater1 tag in the ASPX markup, above, 
      // and an </asp:Panel> tag is after the last </asp:Repeater> tag 
      Repeater rptr = pnlMain.FindControl("Repeater1") as Repeater; 
      rptr.ItemDataBound += new RepeaterItemEventHandler(rptrItemDataBound); 
      rptr.DataSource = tblOne; 
      rptr.DataBind(); 
     } 
     // Cache the 2nd (and others...) like this 
     if (tblTwo != null) 
     { 
      this.ViewState["TblTwo_Cache"] = tblTwo; 
     } 
    } 
} 
protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e) 
{ 
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) 
    { 
     Repeater rptr2 = e.Item.FindControl("Repeater2") as Repeater; 
     if (rptr2 != null) 
     { 
      DataTable dt = new DataTable(); 
      // Now, pull it out of cache 
      dt = GetCachedDataTable("TblTwo_Cache"); 
      if (dt != null) 
      { 
       rptr2.DataSource = dt; 
       rptr2.DataBind(); 
      } 
     } 
    } 
}

来源

2014-05-29 04:13:16 vapcguy

如果您应该使用强类型数据类型，最好使用ItemType财产中<asp:Repeater>控制可用，以便您可以嵌套<asp:Repeater>控制的DataSource属性容易地设定为<%#Container.DataItem %>为遵循每个嵌套中继器相同的步骤。

代码示例：

<asp:Repeater ID="associatedDataRepeater" runat="server"> 
 
    <ItemTemplate> 
 

 
    <asp:Repeater runat="server" DataSource='<%#Container.DataItem %>'> 
 
     <ItemTemplate> 
 

 
     </ItemTemplate> 
 
    </asp:Repeater> 
 

 
    </ItemTemplate> 
 
</asp:Repeater>

来源

2015-05-27 05:07:54 xwpdev

C中的嵌套中继器＃

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