текст с кодом не отображается в метке ModalPopupExtender

Question

Я просмотрел все статьи за последние несколько часов, пытаясь сделать отображение динамического ярлыка на ярлыке, содержащемся в ModalPopupExtender, без успеха. Ярлык текста из кода разметки работает, но я не могу принести ничего из кода. Предложения включали все: от панелей обновления до JavaScript. Возможно, я просто сделаю вывод, что мой ModalPopupExtender проклят; пожалуйста, помогите мне поднять проклятие. Код:

<style type="text/css"> 
     .modalBackground 
     { 
      background-color: Gray; 
      filter: alpha(opacity=70); 
      opacity: 0.7; 
     } 
     .modalPopup 
     { 
      background-color: #ffffdd; 
      border-width: 3px; 
      border-style: solid; 
      border-color: Gray; 
      padding: 3px; 
      width: 250px; 
     } 
    </style> 


<script type="text/javascript"> 
    function ShowModalPopup() { var modal = $find("<%= mpeNewInviteSuccess.ClientID %>"); modal.show(); } 
</script> 



    <%--success popup items--%> 
    <div style="display: none;"> 
     <asp:Button ID="btnDummy" OnClick="btnDummy_Click" OnClientClick="ShowModalPopup" UseSubmitBehavior="true" runat="server" /></div> 
      <div id="divNewInviteSuccess" class="modalPopup" runat="server"> 
       <div> 
        <asp:Label ID="lblNewInviteSuccess" runat="server" /></div> 
       <br /> 
       <div><asp:Button ID="btnNewInviteReturn" Text="OK" CssClass="button" OnClientClick="return HideModalPopup()" runat="server" /></div> 
      </div> 
    <act:ModalPopupExtender ID="mpeNewInviteSuccess" TargetControlID="btnDummy" BackgroundCssClass="modalBackground" 
     PopupControlID="divNewInviteSuccess" DropShadow="true" BehaviorID="mpe" runat="server" /> 



    protected void btnDummy_Click(object sender, EventArgs e) 
    { 
     mpeNewInviteSuccess.Show(); 
     //create object of button from sender 
     Button button = sender as Button; 

     //get command argument 
     string cmdArgument = button.CommandArgument; 

     //split command argument based on comma separator and convert to a list 
     List<string> lstPassedValues = new List<string>(cmdArgument.Split(',')); 

     //ListView lsv = Helpers.FindChild(Page, "lsvNewInvite") as ListView; 

     //create successful message from list 
     string SuccessMsg = "Success! Your invitation was sent to " + lstPassedValues[0] + " " + lstPassedValues[1] + " (" + lstPassedValues[2] + ")."; 
     lblNewInviteSuccess.Text = SuccessMsg; 
     mpeNewInviteSuccess.Show(); 
    } 


    protected void lsvNewInvite_ItemCommand(object sender, ListViewCommandEventArgs e) 
    { 
     if (e.CommandName == "Insert") 
     { 
      //place cursor in txtFirstName 
      var lsv = Helpers.FindChild(this, "lsvNewInvite") as ListView; 
      TextBox txt = Helpers.FindChild(lsv, "txtFriendFirstName") as TextBox; 
      if (txt != null) 
       txt.Focus(); 

      //set up parameter values 
      ListViewItem item = e.Item as ListViewItem; 
      var userInfoList = UserInfo.UserInfoGetByUserID(UserID); 
      UserInformation = userInfoList.FirstOrDefault(); 
      var user = UserInformation.UserID; 
      string firstName = (item.FindControl("txtFriendFirstName") as TextBox).Text.ToString(); 
      string lastName = (item.FindControl("txtFriendLastName") as TextBox).Text.ToString(); 
      string eMail = (item.FindControl("txtFriendEmail") as TextBox).Text.ToString(); 

      try 
      { 
       //code to be inserted into DB 
       srcNewInvite.InsertParameters["FriendID"].DefaultValue = "0"; 
       srcNewInvite.InsertParameters["User"].DefaultValue = user.ToString(); 
       srcNewInvite.InsertParameters["FirstName"].DefaultValue = firstName; 
       srcNewInvite.InsertParameters["LastName"].DefaultValue = lastName; 
       srcNewInvite.InsertParameters["Email"].DefaultValue = eMail; 
       srcNewInvite.InsertParameters["Date"].DefaultValue = DateTime.Now.ToString(); 
      } 
      catch (Exception ex) 
      { 
       throw ex; 
      } 
      finally 
      { 
       EmailNewInvitee(firstName, lastName, eMail); 

       //concatenate these values and make it as a comma-separated string 
       string concatenatedValue = firstName + "," + lastName + "," + eMail; 
       btnDummy.CommandArgument = concatenatedValue; 
       //show success message by programatically "clicking" hidden button 
       //trigger the button click event 
       btnDummy_Click(this.btnDummy, e); 
       pnlMain.Visible = false; 
      } 
     } 

    } 

Answer 1

С помощью хорошего человека на «Brand X» сайта (OK, forums.asp.net), я был в состоянии решить эту проблему, как показано в следующем коде. Главный ответ заключался в использовании UpdatePanel. Раньше я использовал UpdatePanel без успеха, поэтому я не уверен, какая разница на этот раз.

<asp:UpdatePanel ID="udpModalSuccess" runat="server"> 
<ContentTemplate> 
    <%--success popup items--%> 
    <div style="display: none;"> 
     <asp:Button ID="btnDummy" UseSubmitBehavior="true" OnClientClick="ShowModalPopup" OnClick="btnDummy_Click" runat="server" /> 
     <%--Dummy Button added to assign the target controlid of PopupExtender--%> 
     <asp:Button ID="btnDummyButton" UseSubmitBehavior="true" runat="server" Text="DummyButton" Style="display: none;" /> 
    </div> 
    <asp:Panel ID="pnlNewInviteSuccess" class="modalPopup" runat="server"> 
     <div><asp:Label ID="lblNewInviteSuccess" runat="server" /></div> 
     <br /> 
     <div><asp:Button ID="btnNewInviteReturn" Text="OK" CssClass="button" runat="server" /></div> 
    </asp:Panel> 
    <%--Here I have changed the TargetControlID property--%> 
    <act:ModalPopupExtender ID="mpeNewInviteSuccess" TargetControlID="btnDummyButton" CancelControlID="btnNewInviteReturn" 
     BackgroundCssClass="modalBackground" PopupControlID="pnlNewInviteSuccess" DropShadow="true" 
     BehaviorID="mpe" runat="server"> 
    </act:ModalPopupExtender> 
</ContentTemplate> 
</asp:UpdatePanel> 



<style type="text/css"> 
    .modalBackground 
     {background-color: Gray; filter: alpha(opacity=70); opacity: 0.7;} 
    .modalPopup 
     {background-color: #ffffdd; border-width: 3px; border-style: solid; border-color: Gray; padding: 3px; width: 450px;} 
</style> 



    protected void lsvNewInvite_ItemCommand(Object sender, ListViewCommandEventArgs e) 
    { 
     if (e.CommandName == "Insert") 
     { 
      //place cursor in txtFirstName 
      var lsv = Helpers.FindChild(this, "lsvNewInvite") as ListView; 
      TextBox txt = Helpers.FindChild(lsv, "txtFriendFirstName") as TextBox; 
      if (txt != null) 
       txt.Focus(); 

      //set up parameter values 
      ListViewItem item = e.Item as ListViewItem; 
      var userInfoList = UserInfo.UserInfoGetByUserID(UserID); 
      UserInformation = userInfoList.FirstOrDefault(); 
      var user = UserInformation.UserID; 
      string firstName = (item.FindControl("txtFriendFirstName") as TextBox).Text.ToString(); 
      string lastName = (item.FindControl("txtFriendLastName") as TextBox).Text.ToString(); 
      string eMail = (item.FindControl("txtFriendEmail") as TextBox).Text.ToString(); 

      try 
      { 
       //code to be inserted into DB 
       srcNewInvite.InsertParameters["FriendID"].DefaultValue = "0"; 
       srcNewInvite.InsertParameters["User"].DefaultValue = user.ToString(); 
       srcNewInvite.InsertParameters["FirstName"].DefaultValue = firstName; 
       srcNewInvite.InsertParameters["LastName"].DefaultValue = lastName; 
       srcNewInvite.InsertParameters["Email"].DefaultValue = eMail; 
       srcNewInvite.InsertParameters["Date"].DefaultValue = DateTime.Now.ToString(); 
      } 
      catch (Exception ex) 
      { 
       throw ex; 
      } 
      finally 
      { 
       EmailNewInvitee(firstName, lastName, eMail); 

       //concatenate these values and make them as a comma-separated string 
       string concatenatedValue = firstName + "," + lastName + "," + eMail; 
       btnDummy.CommandArgument = concatenatedValue; 
       //show success message by programatically "clicking" hidden button 
       //trigger the button click event 
       btnDummy_Click(this.btnDummy, e); 
       pnlMain.Visible = false; 
       pnlNewInviteSuccess.Visible = true; 
      } 
     } 
    } 

    protected void btnDummy_Click(Object sender, EventArgs e) 
{ 
     //mpeNewInviteSuccess.Show(); 
     //create object of button from sender 
     Button button = sender as Button; 

     //get command argument 
     string cmdArgument = button.CommandArgument; 

     //split command argument based on comma separator and convert to a list 
     List<string> lstPassedValues = new List<string>(cmdArgument.Split(',')); 

     ListView lsv = Helpers.FindChild(Page, "lsvNewInvite") as ListView; 

     //create successful message from list 
     string SuccessMsg = "Success! Your invitation was sent to:<br><b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;" + lstPassedValues[0] + " " + lstPassedValues[1] + " (" + lstPassedValues[2] + "</b>)"; 
     lblNewInviteSuccess.Text = SuccessMsg; 
     //assign TargetControl id of ModalPopUpExtender to btnDummy 
     mpeNewInviteSuccess.TargetControlID = "btnDummy"; 
     //show ModalPopup Extender 
     mpeNewInviteSuccess.Show(); 
    }