Question

How to execute

document.getElementById("<%= btnHiddenBreak.ClientID%>").click() 

using ScriptManager.RegisterStartupScript.

I am trying it like this

ScriptManager.RegisterStartupScript(
    this.Page, 
    Page.GetType(), 
    "OpenModalDialog", 
    "<script type=text/javascript>document.getElementById('<%= tnHiddenBreak.ClientID%>').click() ;</script>", 
    false);`

but it is throwing an error .

Asp code for the button is

<asp:Button id="btnHiddenBreak" runat="server" 
    Visible="false" 
    OnClientClick="openmodalWinBreak();" 
    OnClick="btnHiddenBreak_Click" />

The Error message which I am getting is :-

Microsoft JScript runtime error:
Sys.WebForms.PageRequestManagerServerErrorException: The script tag
registered for type ‘ASP.associates_home_aspx’ and key
‘OpenModalDialog’ has invalid characters outside of the script tags:
document.getElementById(‘<%=
btnHiddenBreak.ClientID%>’).click() ;. Only properly
formatted script tags can be registered.

Please guide me what the mistake I am doing and fix my code as per ..

Answer 1

Have you tried using

ScriptManager.RegisterStartupScript(this.Page, Page.GetType(), "OpenModalDialog", "<script type='text/javascript'>document.getElementById('" + btnHiddenBreak.ClientID + "').click() ;</script>", false);