Ajax自动完成扩展器 [英] Ajax AutoComplete Extender

问题描述

我想在我的Web应用程序中使用自动完成扩展器.为此，我在当前的Web应用程序中创建了一个Web服务，并在该应用程序中添加了Web引用.但是它不起作用.
谁能帮帮我.请

I want to use autocomplete extender in my web application .for this i make a web service in my current web application and add web reference in the application .But its not working .
Can anyh one help me.please

推荐答案

好，步骤1:

制作您的WebService.在您的项目中，创建一个名为 Services 的文件夹(不是必需的，而是整洁的:P)右键单击并说添加->".新的Web服务.让我们称之为WSAutoComplete.现在使它看起来像这样:

Ok, step 1:

Make your WebService. In your project, create a folder called Services, (not a necessity, but neat :P) Right click and say Add -> New Web Service. Lets call it WSAutoComplete. Now make it look like this:

namespace Services
{
    /// <summary>
    /// Summary description for WSAutoComplete
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
    [System.Web.Script.Services.ScriptService]
    public class WSAutoComplete : System.Web.Services.WebService
    {
        [WebMethod]
        [ScriptMethod]
        public string[] GetAutoCompleteList(string prefixText, int count)
        {
            return GetResults(prefixText, count);
        }
    }

    private string[] GetResults(prefixText, count)
    {
         //Do your logic here
         //Example
         List<string> items = new List<string>() {"bob", "steve", "jones", "andrew"};
         List<string> result = new List<string();>
         foreach (string s in items)
             if (s.StartsWith(prefixText))
                 result.Add(s);
         return result.ToArray();
    }</string></string></string>

(忽略此</string></string></string> ;，我不知道为什么文本编辑器会生成多数民众赞成????)

我出于时间目的故意省略了计数，您可以自己添加，只限制返回的结果量.

现在，在您的AutoCompleteExtender控件上:

(Ignore this </string></string></string>, I dont know why thats there being generated by the text editor???)

I purposely left out the count for time purposes, you can add that yourself, just limit the amount of results that you return.

Now, on you AutoCompleteExtender control:

<asp:TextBox id="txtMyTextBox" runat="server"></asp:TextBox>
<asp:AutoCompleteExtender TargetControlID="txtMyTextBox" ServicePath="/Services/WSAutoComplete.asmx"CompletionInterval="500" MinimumPrefixLength="2" ServiceMethod="GetResults"

ID="autocomplete" runat="server"></asp:AutoCompleteExtender>

那应该工作100％！！！确保正确设置服务路径！在服务方法中放置一个断点，看看它是否被击中！如果没有，那么您的ServicePath或ServiceMethod参数可能存在问题

That should work 100%!!! Make sure you set up your service path correctly! Put a break point inside you service method and see if it gets hit! If it doesnt, then there is probably a problem with your ServicePath or ServiceMethod paramter

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