C# - Disable / Enable An Ajaxifeid Button From Client Side (JavaScript)?

Jun 22, 2010

i have an AJAXIFIED button(btnsend) thas is disable by it's Property -> Enabled="False"

i have a TextBox Next To This Button And I Want Enable that Button When Users Type Something in That TextBox...

so i did this (JavaScript):

function onkeyupontextbox() {
var btnSend = document.getElementById("btnSend");
btnSend.disabled = false;
}

but that button does not work after becomes enable...

what can i do about that?

(i am using radajaxmanager for ajaxify that button) (when i remove that button from RadAjaxmanager Or UpdatePanel So EveryThing Is Ok , But I Want That Button In Ajaxify Mode)

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