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ie10 imagebutton _dopostback undefined bug with update panel script manager

IE10 has a nice new little bug which occurs with image buttons on 2nd or consecutive postback on a page which contains an update panel.

You will notice the bug as a broad javascript error message, but behind the scenes the issue occurs due to a bad type conversion to an integer from a floating point which has started to return from the .Net functions.

The official fix is a patch from Microsoft for your server, however, in the meantime you can simply apply the following in your global.asax.

Scott Hanselman has suggested a few things regarding this issue, but I think you will find the solution below to be more straightforward in the short term.

See solution below. (courtesy of R. Prestol)


'put these in global.asax.cs
Protected Sub Application_PostMapRequestHandler(sender As Object, e As System.EventArgs)
        Dim app As HttpApplication = sender
        Dim handler As IHttpHandler = app.Context.Handler
        Dim page As Page = IIf(TypeOf handler Is Page, handler, Nothing)
        If (page IsNot Nothing) Then
            AddHandler page.Load, AddressOf Page_LoadFix
        End If
    End Sub

    Private Sub Page_LoadFix(sender As Object, e As EventArgs)
        Dim page As Page = HttpContext.Current.Handler
        Dim smg As ScriptManager = ScriptManager.GetCurrent(page)
        If smg IsNot Nothing AndAlso (page.IsPostBack = False OrElse smg.IsInAsyncPostBack = False) Then
            ScriptManager.RegisterOnSubmitStatement(page, page.GetType, "IE10ImgFloatFix", "IE10ImgFloatFix();")
            ScriptManager.RegisterStartupScript(page, page.GetType, "IE10ImgFloatFix_func", "function IE10ImgFloatFix() {try {var o = Sys.WebForms.PageRequestManager._instance;var s = o._additionalInput;s = s.replace(/(.y=\d+)([.]\d+)?/g, '$1');s = s.replace(/(.x=\d+)([.]\d+)?/g, '$1');o._additionalInput = s;} catch (ex){}}", True)
        End If
    End Sub


//put these in global.asax.cs
void Application_PostMapRequestHandler(object sender, EventArgs e)
        var app = (HttpApplication)sender;
        var handler = (IHttpHandler)app.Context.Handler;
        Page page = handler as Page;
        if (page != null)
            page.Load += Page_LoadFix;

    private void Page_LoadFix(object sender, EventArgs e)
        var page = (Page)HttpContext.Current.Handler;
        var smg = ScriptManager.GetCurrent(page);
        if (smg != null && (page.IsPostBack == false || smg.IsInAsyncPostBack == false))
            ScriptManager.RegisterOnSubmitStatement(page, page.GetType(), "IE10ImgFloatFix", "IE10ImgFloatFix();");
            ScriptManager.RegisterStartupScript(page, page.GetType(), "IE10ImgFloatFix_func", "function IE10ImgFloatFix() {try {var o = Sys.WebForms.PageRequestManager._instance;var s = o._additionalInput;s = s.replace(/(.y=\\d+)([.]\\d+)?/g, '$1');s = s.replace(/(.x=\\d+)([.]\\d+)?/g, '$1');o._additionalInput = s;} catch (ex){}}", true);


lastChild is null in FireFox works in IE invalid nodeType javascript c# asp .net

This issue alluded me at first as it works in IE but not in FF. See code below.

//pass in table, last cell number and style to apply to it. call this on hover and blur for cell highlight effects. alternatively you can determine last cell number as well and this function could be rewritten to work solely for the purpose of modifying specific cells rather than last cell
function ChangeTableCellStyle(tableid,cellnumber,mystyle) {
if (document.getElementById)
var selectedElement = document.getElementById(tableid);
selectedElement.className = style;
//change style on end cell by drilling into table. this will become deprecated by css3.
if (selectedElement.tagName.toLowerCase()=="table")

var tbody = selectedElement.lastChild;
if (tbody!=null)
var tr = tbody.lastChild;
if (tbody !=null)
var tr = tbody.lastChild; //BUGGED IN FF!

//nodetype should be 1 for element type. in FF it is 3. see reference link at bottom for list of types.
if (tr.nodeType!=1) {
tr[cellnumber].className+= ' ' + mystyle;
} else {
tr.lastChild.className+=' ' + mystyle;




//example usage
ChangeTableCellStyle("table1",3,"cellend"); //will append the class cellend to the last cell in table1 if table1 only has 4 cells per row

In you’re interested in reviewing other approaches to styling your table cells, see my similar article here.