Repeater 中 Dropdownlist 加上SelectedValue属性绑定

功能描述:

　　实现改变一行数据状态的值

　　repeater 中用 dropdownlist 绑定一行状态的属性,用来改变行的状态(类似于isShow),通过HiddenField 绑定该行的ID,后台得到该ID的值去改变这一行的状态.

 

前台代码:

<asp:Repeater ID="rep" runat="server"   >                        
                            <ItemTemplate>
                              <tr>
                                <td>                               
                                <p><asp:DropDownList ID="ddl1" runat="server" SelectedValue='<%# Bind("isOn") %>' AutoPostBack="true" OnSelectedIndexChanged="ddl1_SelectedIndexChanged" >
                                <asp:ListItem  Text="通過" Value="1" style="background: #0F0; color: #000;"></asp:ListItem>
                                <asp:ListItem Text="禁止" Value="0" style="background: red; color: #fff;"></asp:ListItem>
                                </asp:DropDownList><asp:HiddenField ID="hfreportId" runat="server" Value='<%# Eval("pid") %>' /></p>                                
                                </td>                               
                              </tr>                              
                            </ItemTemplate>
                        </asp:Repeater>

 

 

后台代码:

 protected void ddl1_SelectedIndexChanged(object sender, EventArgs e)
    {
        DropDownList ddl1 = sender as DropDownList;
        HiddenField hfPid = rep.Items[(ddl1.NamingContainer as RepeaterItem).ItemIndex].FindControl("hfreportId") as HiddenField;

        string id = hfPid.Value;
        string value = ddl1.SelectedValue;
        new DbHelper().ExecuteNonQuery("update pic set isOn=" + value + " where pid=" + id);
        Loadding();
    }

 

 

 

SelectedValue
必须用<%# Bind("isOn")%>绑定

AutoPostBack
属性为true

OnSelectedIndexChanged
加上该事件

ddl1.NamingContainer as RepeaterItem).ItemIndex
通过选中的 dropdownlist 得到该行的索引
并找到该行HiddenField绑定的ID