页面不稳定的下拉列表的变化 [英] Page Flickering on Dropdown change

问题描述

我使用了一个下拉列表，选择客户。页面闪烁两次选择客户，但我不知道如何纠正它。有人可以帮我解决这个问题呢？

I'm using a drop down list to select the customer. The page flicker twice on selecting the customer and I don't know how to rectify it. Can someone please help me solve the problem?

我的下拉SelectedIndexChange code

protected void ReceiverDropDown_SelectedIndexChanged(object sender, EventArgs e)
    {

        if (ReceiverDropDown.SelectedValue != null && ReceiverDropDown.SelectedValue != "0")
        {            
            string benId = ReceiverDropDown.SelectedValue;
            Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "AddDetails('" + benId + "');", true);
        }
    }

使用更新面板code

<td>
                        <asp:UpdatePanel runat="server" ID="updTerms" UpdateMode="Conditional">
                        <ContentTemplate>
                        <asp:DropDownList Width="180px" CssClass="select_quo_one" ID="ReceiverDropDown" 
                            runat="server" AutoPostBack="true"
                            OnSelectedIndexChanged="ReceiverDropDown_SelectedIndexChanged">
                            </asp:DropDownList>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                       </ContentTemplate>
                       </asp:UpdatePanel>
                       <Triggers>
                        <asp:AsyncPostBackTrigger ControlID="ReceiverDropDown" />
                      </Triggers>
                        </td>

推荐答案

要避免页面闪烁，您可以利用更新panel..Bind的DROPDOWNLIST更新面板里面......

To avoid page flickering you can make use of update panel..Bind the Dropdownlist inside update panel...

标记：

<asp:UpdatePanel runat="server" ID="updTerms">
    <ContentTemplate>
        <asp:DropDownList ID="ReceiverDropDown" runat="server">
    </asp:DropDownList>
    </ContentTemplate>
    <Trigger>
        <asp:AsyncPostBackTrigger ControlID="ReceiverDropDown"  />
    </Trigger>
</asp:UpdatePanel>

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