AsynPostBack没有返回值 [英] AsynPostBack not returning value

问题描述

大家好，



我在我的代码中使用AsynPostBack，我在selectedindexchanged上有一个下拉列表它应该会影响某些任务......但是这个回发是没有返回任何价值..



我的代码：

Hi guys,

i'm using AsynPostBack in my code, where i have a dropdownlist on selectedindexchanged it should effect some task... but this postback is not returning any value..

my code:

<asp:DropDownList ID="ddlstatus" OnSelectedIndexChanged="ddlstatus_SelectedIndexChanged"

 AutoPostBack="true" Width="100px" runat="server">
             <asp:ListItem Value="0"> --Select-- </asp:ListItem>
             <asp:ListItem Value="1"> Active </asp:ListItem>
             <asp:ListItem Value="2"> InActive</asp:ListItem>
             </asp:DropDownList>
             <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" Text="*"

             ControlToValidate="ddlstatus"  BackColor="Aqua" ForeColor="Red" InitialValue="0"  Font-Bold="true" />
             </ContentTemplate>
                <Triggers>
                <asp:AsyncPostBackTrigger ControlID="ddlstatus" />
                </Triggers>
        </asp:UpdatePanel>

plz帮帮我...... /建议我......如何解决这个问题...

plz help me... /suggest me... how to solve this...

推荐答案

<asp:postbacktrigger controlid="ddlstatus" xmlns:asp="#unknown" />

Read about Asynpostback trigger and postback trigger

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