ModalPopupExtender在autopostback后无法正常工作

我有2个更新面板，第一个带有链接按钮来打开模式弹出窗口，我意识到必须将这些验证程序设置为启用false，才能弹出。第二个更新面板和面板一起出现，这些按钮取消和按钮确认。在autopostback之前，一切工作正常。但我想知道为什么在autopostback之后，取消按钮甚至不能关闭模式弹出窗口，而且确认按钮不再有效。ModalPopupExtender在autopostback后无法正常工作

<asp:UpdatePanel ID="uptbl" UpdateMode="Conditional" runat="server"> 
<ContentTemplate> 
<asp:PlaceHolder ID="PlaceHolder1" runat="server"></asp:PlaceHolder> 
<asp:ModalPopupExtender ID="mpe" runat="server" 
     TargetControlID="btnDummy" 
     PopupControlID="UpdatePanel1" 
     BackgroundCssClass="modalBackground" 
     OkControlID="btnDummy" 
     CancelControlID="Button2" 
     BehaviorID="mpeBehavior" /> 
<input id="btnDummy" runat="server" type="button" style="display: none;" /> 

</ContentTemplate> 
</asp:UpdatePanel> 


<asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Conditional" runat="server"> 
<ContentTemplate> 
<asp:DropDownList ID="ddlLength" runat="server" AutoPostBack="true" onselectedindexchanged="ddlLength_SelectedIndexChanged"> 
<asp:ListItem>---Select Minutes---</asp:ListItem> 
<asp:ListItem Value="60">60</asp:ListItem> 
<asp:ListItem Value="120">120</asp:ListItem> 
</asp:DropDownList> 
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" InitialValue="---Select Minutes---" 
           runat="server" ErrorMessage="Minutes is required!" 
           ControlToValidate="ddlLength" Display="Dynamic" 
           CssClass="error" Enabled="false" ValidationGroup="reserve"> 
           </asp:RequiredFieldValidator> 
<asp:Button ID="btnConfirm" runat="server" Text="Confirm" OnClick="btnConfirm_Click" ValidationGroup="reserve"/> 
<asp:Button ID="Button2" runat="server" Text="Cancel" CausesValidation="false" OnClick="btnCancel_Click" /> 

public void DynamicClick(object sender, EventArgs e) 
{ 
UpdatePanel1.Update(); 
mpe.Show(); 
RequiredFieldValidator2.Enabled = true; 
} 
    public void btnCancel_Click(object sender, EventArgs e) 
    { 
     mpe.Hide(); 
     RequiredFieldValidator2.Enabled = false; 
    } 

protected void ddlLength_SelectedIndexChanged(object sender, EventArgs e) 
    { 
     int length = 0, unit = 0; 
     if (ddlLength.SelectedIndex != 0) 
     { 
      length = Convert.ToInt32(ddlLength.SelectedItem.Value); 
      unit = length/60; 
     } 

     RequiredFieldValidator1.Enabled = true; 
     RequiredFieldValidator2.Enabled = true; 
     Button2.CausesValidation = false; 
    }

来源

2012-02-26 SƲmmēr Aƥ

请把下面的代码在下拉服务器端更改事件

modalpopup.show(); updatepanel.update();

其中modalpopup是modalpopupextender和UpdatePanel中的 “ID” 是的UpdatePanel

的 “ID”

来源

2012-04-30 09:09:40

ModalPopupExtender在autopostback后无法正常工作

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