AJAX自动完成扩展不工作的权利，VB.Net

Question

我试图使用AJAX自动完成扩展，但它不工作.... 我把在Web服务的方法GetCompanyNames一个破发点，但它甚至没有达到突破点。

这里是我的ajax autoextender

<asp:TextBox TabIndex="1" ToolTip="* Required - enter the Company name" ID="txtCompanyName" 
runat="server"></asp:TextBox> 
<ajaxToolkit:AutoCompleteExtender runat="server" ID="acCompanyName" TargetControlID="txtCompanyName" ServiceMethod="GetCompanyNames" ServicePath="~/WebServices/AutoComplete.asmx" MinimumPrefixLength="1" 
EnableCaching="true"> 
</ajaxToolkit:AutoCompleteExtender> 

这里是我创建

Imports System.Web 
    Imports System.Web.Services 
    Imports System.Web.Services.Protocols 

    ' To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. 
    ' <System.Web.Script.Services.ScriptService()> _ 
    <WebService(Namespace:="http://tempuri.org/")> _ 
    <WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _ 
    <System.Web.Script.Services.ScriptService()> _ 
    Public Class AutoComplete 
     Inherits System.Web.Services.WebService 

<WebMethod()> _ 
Public Function HelloWorld() As String 
    Return "Hello World" 
End Function 

<WebMethod()> _ 
Public Function GetCompanyNames(ByVal prefixTest As String) As String() 

    Dim db As New DataClassesDataContext 

    Dim company = From c In db.CT_Companies 
        Where c.CompanyName.Contains(prefixTest) 
        Select c.CompanyName 

    Return company.ToArray 

End Function 

    End Class 

任何人都可以看到我在做什么错误或丢失的网络服务？谢谢

Answer 1

根据文档here，您在方法签名中缺少<System.Web.Script.Services.ScriptMethod()>属性和整数count参数。