在外部获取Repeater 内 DropDownList1 的选择值，一直找不到，

Question

在外部获取Repeater 内 DropDownList1 的选择值，一直找不到；怎么弄的：帮帮忙，谢了，很急用！。。

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小吴

  protected void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e)

    {

        DropDownList dr = e.Item.FindControl("touxiang") as DropDownList;

        dr.SelectedIndexChanged += new EventHandler(dr_SelectedIndexChanged);

}



   public   void dr_SelectedIndexChanged(object sender, EventArgs e)

    {  

       

        Session["u_image"] = touxiang.SelectedItem.Value;

        throw new Exception("The method or operation is not 

implemented.");



//这里找不到 touxiang.SelectedItem.Value;的值

    }


     <asp:Repeater ID="Repeater1" runat="server" OnItemCommand="Repeater1_ItemCommand" OnItemDataBound="Repeater1_ItemDataBound">
        <ItemTemplate>  
   <asp:DropDownList runat="server" ID="touxiang"   AutoPostBack="True" Width="79px"   OnSelectedIndexChanged="dr_SelectedIndexChanged" >

                      <asp:ListItem Text="头像1" Value="../touxiang/1.gif"></asp:ListItem>

                      <asp:ListItem Text="头像2" Value="../touxiang/2.gif"></asp:ListItem>

                      <asp:ListItem Text="头像3" Value="../touxiang/3.gif"></asp:ListItem>

                      <asp:ListItem Text="头像4" Value="../touxiang/4.gif"></asp:ListItem>

 </asp:DropDownList >


      </ItemTemplate>
        </asp:Repeater>

Answer 1

public   void dr_SelectedIndexChanged(object sender, EventArgs e)
{  
	DropDownList ddl = (DropDownList)sender;       
	Session["u_image"] = ddl.SelectedItem.Value;
}

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知识改变命运，奋斗成就人生!

Answer 2

谢谢X.X.Y !   呵呵.......

---

小吴

Answer 3

还有点问题.......

<asp:Repeater ID="Repeater1" runat="server" OnItemCommand="Repeater1_ItemCommand" OnItemDataBound="Repeater1_ItemDataBound">        <ItemTemplate>  
   <asp:DropDownList runat="server" ID="touxiang"   AutoPostBack="True" Width="79px"   OnSelectedIndexChanged="dr_SelectedIndexChanged" >

                      <asp:ListItem Text="头像1" Value="../touxiang/1.gif"></asp:ListItem>

                      <asp:ListItem Text="头像2" Value="../touxiang/2.gif"></asp:ListItem>

                      <asp:ListItem Text="头像3" Value="../touxiang/3.gif"></asp:ListItem>

                      <asp:ListItem Text="头像4" Value="../touxiang/4.gif"></asp:ListItem>

 </asp:DropDownList >

<asp:lable  id="www" runat="server"  text="<%#Eval("bh")%>"></lable>
      </ItemTemplate>  
      </asp:Repeater>



public   void dr_SelectedIndexChanged(object sender, EventArgs e)
{  
	DropDownList ddl = (DropDownList)sender;       
	Session["u_image"] = ddl.SelectedItem.Value;
  我想在这里引用  <asp:lable    id="www"  的值，可以吗。怎么弄呢？再麻烦一次啦！
}














 

---

知识改变命运，奋斗成就人生!

---

小吴

Answer 4

还有点问题.......

<asp:Repeater ID="Repeater1" runat="server" OnItemCommand="Repeater1_ItemCommand" OnItemDataBound="Repeater1_ItemDataBound">        <ItemTemplate>  

   <asp:DropDownList runat="server" ID="touxiang"   AutoPostBack="True" Width="79px"   OnSelectedIndexChanged="dr_SelectedIndexChanged" >



                      <asp:ListItem Text="头像1" Value="../touxiang/1.gif"></asp:ListItem>



                      <asp:ListItem Text="头像2" Value="../touxiang/2.gif"></asp:ListItem>



                      <asp:ListItem Text="头像3" Value="../touxiang/3.gif"></asp:ListItem>



                      <asp:ListItem Text="头像4" Value="../touxiang/4.gif"></asp:ListItem>



 </asp:DropDownList >



<asp:lable  id="www" runat="server"  text="<%#Eval("bh")%>"></lable>

      </ItemTemplate>  

      </asp:Repeater>







public   void dr_SelectedIndexChanged(object sender, EventArgs e)

{  

	DropDownList ddl = (DropDownList)sender;       

	Session["u_image"] = ddl.SelectedItem.Value;

  我想在这里引用  <asp:lable    id="www"  的值，可以吗。怎么弄呢？再麻烦一次啦！

}


















 

---

知识改变命运，奋斗成就人生!

---

小吴

快来帮帮我呀,怎么啦:

---

小吴

Answer 5

小吴你好，我写了一个示例通过两种方法解决你的问题，你可以参考一下

----------------------------------------------------------------------------------------------------------------

.aspx

----------------------------------------------------------------------------------------------------------------

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="X200905231324.aspx.cs" Inherits="Repeaters_X200905231324" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:Repeater ID="fRepeater" runat="server" onitemcommand="fRepeater_ItemCommand">
    <ItemTemplate>  
        Key:<asp:Label ID="fEmployeeId" Text='<%# Eval("EmployeeKey") %>' runat="server" ></asp:Label><br />
        Name:<asp:Label ID="fEmployeeName" Text='<%# Eval("Name") %>' runat="server" ></asp:Label><br />
        ModifyDate:<asp:Label ID="fEmployeeModifyDate" Text='<%# Eval("ModifyDate") %>' runat="server" ></asp:Label><br />
        Picture:<asp:DropDownList ID="fDropDownList" runat="server" Width="79px" AutoPostBack="true" OnSelectedIndexChanged="SelectedIndexChanged" >
            <asp:ListItem Text="头像1" Value="../touxiang/1.gif"></asp:ListItem>
            <asp:ListItem Text="头像2" Value="../touxiang/2.gif"></asp:ListItem>
            <asp:ListItem Text="头像3" Value="../touxiang/3.gif"></asp:ListItem>
            <asp:ListItem Text="头像4" Value="../touxiang/4.gif"></asp:ListItem>
        </asp:DropDownList >
        <br />
        <asp:Button  CommandName="Command1" Text="Command1" runat="server"/>
        <br />
        -----------------------------------------------------------------
        <br />
    </ItemTemplate>  
    </asp:Repeater>
    </div>
    </form>
</body>
</html>

----------------------------------------------------------------------------------------------------------------

.aspx.cs

----------------------------------------------------------------------------------------------------------------

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 Repeaters_X200905231324 : System.Web.UI.Page
{
    #region " DataSource "

    public DataTable Employee
    {
        get
        {
            if (Session["Employee"] == null)
            {
                DataTable fEmployee = new DataTable();

                fEmployee.Columns.Add(new DataColumn("EmployeeKey", typeof(Int32)));
                fEmployee.Columns.Add(new DataColumn("Name", typeof(String)));
                fEmployee.Columns.Add(new DataColumn("ModifyDate", typeof(DateTime)));

                fEmployee.Rows.Add(new object[] { 1, "John", DateTime.Now });
                fEmployee.Rows.Add(new object[] { 2, "Tomi", DateTime.Now });
                fEmployee.Rows.Add(new object[] { 3, "X.XY", DateTime.Now });
                fEmployee.Rows.Add(new object[] { 4, "Sam", DateTime.Now });
                fEmployee.Rows.Add(new object[] { 5, "Mary", DateTime.Now });
                fEmployee.Rows.Add(new object[] { 6, "Chirs", DateTime.Now });

                Session["Employee"] = fEmployee;
            }

            return (DataTable)Session["Employee"];
        }
    }

    #endregion

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
            this.BindRepeater();
    }

    private void BindRepeater()
    {
        this.fRepeater.DataSource = this.Employee;
        this.fRepeater.DataBind();
    }

    protected void fRepeater_ItemCommand(object source, RepeaterCommandEventArgs e)
    {
        switch (e.CommandName)
        {
            case "Command1":
                Control fControl = e.CommandSource as Control;
                RepeaterItem fCurItem = fControl.NamingContainer as RepeaterItem;
                this.WriteMsg(fCurItem);
                break;
        }
    }

    private void WriteMsg(RepeaterItem fItem)
    {
        string fKey = ((Label)fItem.FindControl("fEmployeeId")).Text;
        string fName = ((Label)fItem.FindControl("fEmployeeName")).Text;
        string fModifyDate = ((Label)fItem.FindControl("fEmployeeModifyDate")).Text;
        string fSelectText = ((DropDownList)fItem.FindControl("fDropDownList")).SelectedItem.Text;
        this.WriteMsg(fKey, fName, fModifyDate, fSelectText);
    }

    private void WriteMsg(string fEmployeeKey, string fName, string fModifyDate, string fSelectedText)
    {
        object[] fArray = new object[] { fEmployeeKey, fName, fModifyDate, fSelectedText };
        string fMsg = string.Format("Key: {0} <br /> Name: {1} <br /> ModifyDate: {2} <br /> SelectedText: {3} <br />", fArray);
        Response.Write("=================================================");
        Response.Write("<br />");
        Response.Write(fMsg);
        Response.Write("=================================================");
        Response.Write("<br />");
    }

    protected void SelectedIndexChanged(object sender, EventArgs e)
    {
        DropDownList fDropDownList = (DropDownList)sender;
        RepeaterItem fCurItem = (RepeaterItem)fDropDownList.Parent;
        this.WriteMsg(fCurItem);
    }
}

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知识改变命运，奋斗成就人生!

Answer 6

你好，X.X.Y ,谢谢你，呵呵！

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小吴