Javascript Alert in C#

/// <summary>

/// A JavaScript alert 

/// </summary>

public static class Alert

{

    /// <summary>

    /// Shows a client-side JavaScript alert in the browser.
    /// </summary>
    /// <param name="message">The message to appear in the alert.</param>

    public static void Show(string message)

    {

        // Cleans the message to allow single quotation marks

        string cleanMessage = message.Replace("'", "\\'");
        string script = string.Format("<script type=\"text/javascript\">$(document).ready(function(){alert('{0}');});</script>", cleanMessage);
        // Gets the executing web page
        Page page = HttpContext.Current.CurrentHandler as Page;
        // Checks if the handler is a Page and that the script isn't all ready on the Page
        if (page != null && !page.ClientScript.IsClientScriptBlockRegistered("alert"))
        {
            page.ClientScript.RegisterClientScriptBlock(typeof(Alert), "alert", script);
        }
    }
}