AJAX :: Postbacking From NumericUpDownExtender?

Apr 15, 2010

I have a UserControl with a NumericUpDownExtender, and I want to raise a custom event when any of the arrows has been clicked, or the text modified. I already resolved this for the AutoCompleteExtender in http://forums.asp.net/t/1544290.aspx but I can't make it work for NumericUpDownExtender...I tried to follow this http://dotnetslackers.com/columns/ajax/AjaxControlToolkitPartOne.aspx but it doesn't work.Context: There can be any number of this User Control in the aspx and the User Control can be inside a DetailsView.

One more question, if I have more than one User Control how can I merge the code in the Page_Load event (client side) of all of them?For example, here there is just one (number 5), but what if I have many of them? Each User Control just know its own instance.var _ext5;function pageLoad(sender, e){ _ext5 = $find('<%= NumericUpDownExtender5.ClientID %>'); _ext5.add_currentChanged(onChange);}function pageUnload(sender, e){ _ext5.remove_currentChanged(onChange);}function onChange(sender, e){ $get('eventDump').innerHTML += String.format('currentChanged event fired. Value: {0}<br/>', e);}I'm trying to add this before the above codeClientScriptManager cm = Page.ClientScript;String cbReference = cm.GetCallbackEventReference(this, "arg", "ReceiveServerData", "");String callbackScript = "function CallServer(arg, context)" + Environment.NewLine + "{" + Environment.NewLine + cbReference + ";" +Environment.NewLine + "}" + Environment.NewLine; cm.RegisterClientScriptBlock(this.GetType(),"CallServer", callbackScript, true);and then in the function onChange I addstring str = ""; str += "function onChange(sender, e)" + Environment.NewLine; str += "{" + Environment.NewLine; str += " if (source) {" + Environment.NewLine; str += " var hfield = document.getElementById('" + this.HFClient.ClientID + "');" + Environment.NewLine; str += " hfield.value = eventArgs.get_value();" + Environment.NewLine; str += " CallServer(hfield.value, '');" + Environment.NewLine; str += " }" + Environment.NewLine; str += "}" + Environment.NewLine; Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "AutoCompleteClientScript", str, true);On the server side, I'm implementing IPostBackEventHandler, but nothing happens, I mean the event is not raised.Thannks! Daniel.

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