I have an Ajax Script manager in my Master page since my pages use ajax. But in one of my content pages, I need to use AutoCompleteExtender in AjaxControlToolkit which requires the use of ToolScriptManager available in the toolkit. But this leads to an error saying Only one instance of a ScriptManager can be added to the page. I searched over the internet for a solution. Many programmers suggests the use of a ScriptManagerProxy to solve this issue. Another alternative is using ToolscriptManager in the master page instead of ScriptManager. Can anyone please demonstrate how to solve this issue by using ScriptManagerProxy since I think that is a better way of solving the issue?

Here is the code of my master page:

And here is the code of my content page:

EnableCaching="true" BehaviorID="AutoCompleteEx" MinimumPrefixLength="2"

TargetControlID="TextBoxStudentID" ServicePath="~/CampusMateWebService.asmx" ServiceMethod="GetCompletionListForStudentID"

CompletionInterval="50" CompletionSetCount="30"

CompletionListCssClass="autocomplete_completionListElement" CompletionListItemCssClass="autocomplete_listItem"

CompletionListHighlightedItemCssClass="autocomplete_highlightedListItem"

DelimiterCharacters=";, :" ShowOnlyCurrentWordInCompletionListItem="true">

the animation is played and then set it to zero --%>

EndValueScript="$find('AutoCompleteEx')._height" />

"$find('AutoCompleteEx')._height" EndValue="0" />