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I designed a bootstrap modal popup box which will open after clicking a button in parent page . I want to do few things in modal and close it but parent page is refreshed after I click a button on child page and modal form gets submitted . I tried **OnClientClick="return false;"** but it stops firing button event .
Can anyone tell me how to solve it


**Parent Page**

<a href=\"/abcd/abcd1/abcd2.aspx?abcd3=" + Eval("abcd4") + "&abcd5=" + Eval("abcd6") + "&abcd7=" + Eval("abcd7") + "&abcd8=" + Eval("abcd8") + "\" class='li-modal'>"+ Eval("abcd9") +  "</a>


<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">

    <html xmlns="">
    <head id="Head1" >
        <script language="javascript" type="text/javascript" src="/abcdef/xyzed/Script.js"></script>
    <body scroll="no">
        <div class="modal-header">
          <button type="button" class="close" data-dismiss="modal">X</button>    
        <div class="modal-body" style="margin-left:-140px;">
      <div class="panel panel-default">
        <div class="panel-body">
          <form id="form1" runat="server">
            <table class="inputForm" cellspacing="0" cellpadding="0" border="0" style="width: 100%; height: 100%; table-layout: fixed">
                    <tr height="18">
                        <td>ABCDEF Order</td>
                        <td style="vertical-align: middle">
                            <td>XYZED no:</td>
                                <asp:TextBox ID="No" runat="server" Width="50px" EnableViewState="False" />
                                <asp:Button ID="xyz1" runat="server" Text="|<" OnClick="xyz1_Click"  autopostback="false"/>
                                <asp:Button ID="xyz2" runat="server" Text="<" OnClick="xyz2_Click" OnClientClick="return false;"  />
                                <asp:Button ID="xyz3" runat="server" Text=">" OnClick="xyz3_Click" OnClientClick="return false;" />
                                <asp:Button ID="xyz4" runat="server" Text=">|" OnClick="xyz4_Click" OnClientClick="return false;" />

                    <tr class="footerrow" height="24">
                        <td align="right">
                            <asp:Button ID="btnSubmit" CssClass="button" runat="server" Text="Ok" OnClick="btnSubmit_Click">
                            </asp:Button><input class="button" id="btnCancel" onclick=" top.window.close();" type="button"
                                value="Cancel" name="btnCancel" /></td>
      <div class="modal-footer">




protected void Page_Load(object sender, EventArgs e)
        No = long.Parse(Request.QueryString["No"]);
        RuleNo = long.Parse(Request.QueryString["RuleNo"]);
        if (!IsPostBack)
            No.Text = ((long)oldRuleNo).ToString();

    protected void xyz1_Click(object sender, EventArgs e)
        No.Text = "1";


After clicking xyz1_Click button parent page refreshing . How do I stop it . Please help



What I have tried:

I tried **OnClientClick="return false;"** but it stops firing button event .
Updated 23-Oct-20 13:12pm

1 solution

That's how works, you click things which causes a postback which re-requests the page allowing your server-side code to run. That code can then amend the state of controls and the updated html is sent to the browser to show. If you want things to happen without the page refreshing you'll need to use ajax. You can get to do this for you by putting the relevant controls inside an UpdatePanel, so if you wrap the table that conatins your buttons and also the "No" label with an UpdatePanel .net will use ajax to instigate your postback and again use ajax to update the returned html avoiding a page refresh.

UpdatePanel Class (System.Web.UI) | Microsoft Docs[^]
Member 14362033 19-Oct-20 11:53am
Hello , thanks for reply :) .. I am trying your solution . I will update if my issue gets solved . Thank you once again :)
Member 14362033 23-Oct-20 18:07pm
@F-ES Sitecore Hello , it's not working . I wrapped table with updatepanel , scriptmanager but still parent page refreshes . Any idea???
Member 14362033 23-Oct-20 18:08pm
Updated my code
F-ES Sitecore 24-Oct-20 8:58am
I don't see an updatepanel in the updated code?
Member 14362033 23-Oct-20 19:57pm
I think I have to use jquery and ajax too to prevent refreshing parent page and triggering the child page button also .

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