Ajax自动完成扩展器

Question

我有一个ajax自动完成扩展器。我想将隐藏字段的值传递给Web服务。我想将隐藏字段的值作为contextkey参数传递给Web服务。

Answer 1

我想通了。我已经发布了下面的代码，以防其他人有类似的问题。

<asp:Panel id ="divClientSearch" CssClass="clientSearch" runat="server" DefaultButton="btnSearch"> 

    <label>Enter Client Last Name/First Name/Full Name/SSN: </label> 
    <asp:TextBox ID="txtSearch" runat="server" MaxLength="20" autocomplete="off"></asp:TextBox> 
    <asp:Button ID="btnSearch" runat="server" SkinID="smallButton" OnClick="BtnSearchClick" 
     OnClientClick="return RedirectPage();" Text="Search" /> 
     <input type="hidden" id="searchClient" runat="server" /> 
     <asp:TextBox ID="searchClient22" runat="server" MaxLength="20" autocomplete="off" Visible="false"></asp:TextBox> 
     <ajaxToolkit:AutoCompleteExtender runat="server" ID="autoComplete1" TargetControlID="txtSearch" BehaviorID="AutoCompleteBehavior" 
     ServiceMethod="GetClients" ServicePath="~/AjaxServices/TickerSearch.asmx" 
     MinimumPrefixLength="1" CompletionInterval="1000" EnableCaching="true" CompletionSetCount="200" 
     CompletionListCssClass="autocomplete_completionListElement menuList" CompletionListItemCssClass="autocomplete_listItem" 
     CompletionListHighlightedItemCssClass="autocomplete_highlightedListItem" DelimiterCharacters="" 
     ShowOnlyCurrentWordInCompletionListItem="true"> 
    </ajaxToolkit:AutoCompleteExtender> 
</asp:Panel> 


<script type="text/javascript"> 

    function pageLoad() { 
     var autoComplete = $find('AutoCompleteBehavior'); 
     if (!autoComplete) return; 
     var target = autoComplete.get_element(); 
     if (!target) return; 

     var userContext = document.getElementById('<%=searchClient.ClientID %>').value; 
     if (!userContext) return; 

     // Dynamically assign the context and change the color when processing 
     autoComplete.add_populating(function() { 
     autoComplete.set_contextKey(userContext); 

     }); 
    } 
</script> 

Answer 2

$find('AutoCompleteBehavior')回报null在.NET 4.0中。任何解决方法？

Answer 3

如果$查找（BehaviorID）返回NULL，你能做到这一点的方法：

//挂接到自动完成填充/填充事件

function pageLoad() { 
    var autoComplete = getBehavior('AutoCompleteBehavior'); 
    if (!autoComplete) return; 
    var target = autoComplete.get_element(); 
    if (!target) return; 
    var userContext = $get('<%=this.ddlColumnName.ClientID %>'); 
    if (!userContext) return; 

    // Dynamically assign the context and change the color when processing 
    autoComplete.add_populating(function() { 
     autoComplete.set_contextKey(userContext.value); 
    }); 

    autoComplete.add_itemSelected(function() { 
     _doPostBack('<%=this.ddlColumnName.ClientID %>', ''); 
    }); 
} 

function getBehavior(name) { 
    //If any Extender is placed in the DataBind Control, it's hard to define the BehaviorId and get the Client behavior. 
    //We can use the method to find all the correct type behaviors. 
    var currentBehavior = null; 
    var allBehaviors = Sys.Application.getComponents(); 
    for (var loopIndex = 0; loopIndex < allBehaviors.length; loopIndex++) { 
     currentBehavior = allBehaviors[loopIndex]; 
     if ("get_name" in currentBehavior) { 
      if (currentBehavior.get_name() == name) { 
       // Now we get the ClientBehavior here: currentBehavior! 
       return currentBehavior 
      } 
     } 
    } 
    return 
}