[Mono-bugs] [Bug 327816] New: duplicated onchange attribute in TextBox with AutoPostback

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Mon Sep 24 10:51:33 EDT 2007


           Summary: duplicated onchange attribute in TextBox with
           Product: Mono: Class Libraries
           Version: 1.2
          Platform: x86
        OS/Version: openSUSE 10.2
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Sys.Web
        AssignedTo: mhabersack at novell.com
        ReportedBy: g.tardini at caleidoscopio.it
         QAContact: mono-bugs at ximian.com
          Found By: ---

Created an attachment (id=174368)
 --> (https://bugzilla.novell.com/attachment.cgi?id=174368)
Test page

Steps to reproduce the problem:
1. Insert a TextBox in a page, and set the AutoPostback attribute to true
<asp:TextBox ID="TextBox1" AutoPostBack="true" runat="server"></asp:TextBox>

Now the autpostback works well.

2. In the Page_Load method add something to the TextBox's onchange attribute
TextBox1.Attributes["onchange"] = "alert('onchange!');";

Now the autpostback doesn't work any more. The HTML produced for the textbox is
the following:

 <input id="TextBox1" onchange="alert('onchange');" type="text" onkeypress="if
(WebForm_TextBoxKeyHandler(event) == false) return false;"
onchange="__doPostBack('TextBox1','')" name="TextBox1" />

As you can see, there are two onchange attributes, but only the first is
executed, thus the postback isn't performed.

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