Dynamic Slideshow of images using Ajax Toolkit

<script runat="Server" type="text/C#">
[System.Web.Services.WebMethod]
[System.Web.Script.Services.ScriptMethod]
public static AjaxControlToolkit.Slide[] GetSlides()
{
System.Web.UI.Page ObjUIPage = new System.Web.UI.Page();
int i = 0;
int j = 0;
//'The below line specifies the Directory to be used.Here the images are in images folder of my application
System.IO.DirectoryInfo DirInfo = new System.IO.DirectoryInfo(ObjUIPage.Server.MapPath("") + "\\Storage\\Banner");
System.IO.DirectoryInfo[] subDirs = DirInfo.GetDirectories();
//'The below line gets the list of files in the directory specified above
System.IO.FileInfo[] Files = DirInfo.GetFiles();
//The below line gives the file count, which is useful to specify the size of array
j = Files.Length;
Slide[] mySlides = new AjaxControlToolkit.Slide[j + 1];
System.IO.FileInfo di = null;
//' This loop continues upto the last file in the directory
foreach (System.IO.FileInfo di_loopVariable in Files)
{
di = di_loopVariable;
// mySlides[i] = new AjaxControlToolkit.Slide(di.FullName, di.Name, di.Name.Substring(0, di.Name.IndexOf(".")));
mySlides[i] = mySlides[i] = new AjaxControlToolkit.Slide("\\Storage\\Banner\\"+di.Name, di.Name, di.Name.Substring(0, di.Name.IndexOf(".")));
i = i + 1;
}
return mySlides;
//' this line sends the dynamically added details as AjaxControlToolkit.Slide
}
</script>

<asp:scriptmanager runat="server" id="SideShow">

<asp:datagrid id="dgdarray" runat="server">

<asp:label runat="Server" id="imageTitle" cssclass="slideTitle">

<asp:image id="Image1" runat="server" height="300" style="border: 0px solid black;
width: auto" imageurl="/Storage/Banner/bannerImage1.jpg" alternatetext="Blue Hills image">
<asp:label runat="server" id="imageDescription" cssclass="slideDescription" text="Slide Show Desc.">



<asp:button runat="Server" id="prevButton" text="Prev" font-size="Larger">
<asp:button runat="Server" id="playButton" text="Play" font-size="Larger">
<asp:button runat="Server" id="nextButton" text="Next" font-size="Larger">
<ajaxtoolkit:slideshowextender id="SlideShowExtender1" runat="server" targetcontrolid="Image1"
="" autoplay="true" imagetitlelabelid="imageTitle" slideshowservicemethod="GetSlides" imagedescriptionlabelid="imageDescription" nextbuttonid="nextButton" playbuttontext="Play" stopbuttontext="Stop" previousbuttonid="prevButton" playbuttonid="playButton" loop="true">