For the following code, I am getting a compiler error of Expected class, delegate or struct. Please help

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C#

Web Service file

[System.Web.Script.Services.ScriptService]
[System.Web.Services.WebMethod]
[System.Web.Script.Services.ScriptMethod]
public static AjaxControlToolkit.Slide[] GetSlides()
{
AjaxControlToolkit.Slide[] slides=new AjaxControlToolkit.Slide[3];
slides[0]=new AjaxControlToolkit.Slide("12.jpg", "Image1", "a");
slides[1]=new AjaxControlToolkit.Slide("37.jpg", "Image1", "a");
slides[2]=new AjaxControlToolkit.Slide("38l.jpg", "Image1", "a");
return (slides);
}

C# code

<ajaxToolkit:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">

<asp:Image ID="Image1" runat="server" />

<ajaxToolkit:SlideShowExtender ID="SlideShowExtender1" runat="server"
TargetControlID="Image1"
SlideShowServiceMethod="GetSlides"
SlideShowServicePath="~/Service.asmx"
PreviousButtonID="Button1"
PlayButtonID="Button2"
NextButtonID="Button3"
PlayButtonText="Play"
StopButtonText="Stop"
AutoPlay="true">