Load Content Via WebService

[ScriptService]
public class WebServiceName : WebService
{
    [WebMethod]
    public string WebServiceMethodName(object context)
    {
        // We cannot use a dictionary as a parameter, 
        //because it is only supported by script services.
        // The context object should be cast to a dictionary at runtime.
        IDictionary<string, object> contextDictionary = (IDictionary<string, object>) context;

        //...
    }
}

<ScriptService()> _
Public Class WebServiceName
    Inherits WebService
    <WebMethod()> _
    Public Function WebServiceMethodName(context As Object) As String
        ' We cannot use a dictionary as a parameter, 
        'because it is only supported by script services.
        ' The context object should be cast to a dictionary at runtime.
        Dim contextDictionary As IDictionary(Of String, Object) = DirectCast(context, IDictionary(Of String, Object))

        '...
    End Function
End Class

<telerik:RadNotification RenderMode="Lightweight" ID="RadNotification1" Animation="Slide" runat="server" OffsetX="-20"
    VisibleOnPageLoad="true" OffsetY="-20" Width="250px" Height="80px" LoadContentOn="EveryShow"
    WebMethodName="GetWeatherForcast" WebMethodPath="NotificationWebService.asmx"
    VisibleTitlebar="false" Value="rainyState" EnableRoundedCorners="true" Skin="Office2007">
</telerik:RadNotification>

[WebMethod]
public string GetWeatherForcast(object context)
{
    IDictionary<string, object> contextDictionary = (IDictionary<string, object>)context;
    string weather = ((string)contextDictionary["Value"]).Replace("State", "");


    return GetWeatherContent(weather);
}

protected string GetWeatherContent(string weather)
{
    int temperature = 0;
    string imgUrl = "Img/";
    switch (weather)
    {
        case "rainy":
            temperature = new Random().Next(10, 15);
            imgUrl += "RainyIcon.png";
            break;
        case "cloudy":
            temperature = new Random().Next(15, 20);
            imgUrl += "CloudyIcon.png";
            break;
        default: //sunny :)
            temperature = new Random().Next(20, 25);
            imgUrl += "SunnyIcon.png";
            break;
    }

    HtmlGenericControl wrapper = new HtmlGenericControl("div");
    HtmlGenericControl img = new HtmlGenericControl("img");
    img.Attributes.Add("class", "imageThumb");
    img.Attributes.Add("src", imgUrl);
    img.Attributes.Add("alt", "");
    HtmlGenericControl textWrapper = new HtmlGenericControl("div");
    textWrapper.Attributes.Add("class", "textWrapper");
    textWrapper.InnerHtml = String.Format("The weather forcast is {0}. <br> Expected degrees: {1}", weather.ToUpper(), temperature);
    wrapper.Controls.Add(img);
    wrapper.Controls.Add(textWrapper);
    StringWriter sw = new StringWriter();
    HtmlTextWriter writer = new HtmlTextWriter(sw);
    wrapper.RenderControl(writer);
    return sw.ToString();
}

Public Function GetWeatherForcast(context As Object) As String
    Dim contextDictionary As IDictionary(Of String, Object) = DirectCast(context, IDictionary(Of String, Object))
    Dim weather As String = DirectCast(contextDictionary("Value"), String).Replace("State", "")


    Return GetWeatherContent(weather)
End Function

Protected Function GetWeatherContent(weather As String) As String
    Dim temperature As Integer = 0
    Dim imgUrl As String = "Img/"
    Select Case weather
        Case "rainy"
            temperature = New Random().[Next](10, 15)
            imgUrl += "RainyIcon.png"
            Exit Select
        Case "cloudy"
            temperature = New Random().[Next](15, 20)
            imgUrl += "CloudyIcon.png"
            Exit Select
        Case Else
            'sunny :)
            temperature = New Random().[Next](20, 25)
            imgUrl += "SunnyIcon.png"
            Exit Select
    End Select

    Dim wrapper As New HtmlGenericControl("div")
    Dim img As New HtmlGenericControl("img")
    img.Attributes.Add("class", "imageThumb")
    img.Attributes.Add("src", imgUrl)
    img.Attributes.Add("alt", "")
    Dim textWrapper As New HtmlGenericControl("div")
    textWrapper.Attributes.Add("class", "textWrapper")
    textWrapper.InnerHtml = [String].Format("The weather forcast is {0}. <br> Expected degrees: {1}", weather.ToUpper(), temperature)
    wrapper.Controls.Add(img)
    wrapper.Controls.Add(textWrapper)
    Dim sw As New StringWriter()
    Dim writer As New HtmlTextWriter(sw)
    wrapper.RenderControl(writer)
    Return sw.ToString()
End Function