MessageBox using ASP.NET,C#

Once create a class file for MessageBox.cs after copy and paste below code…

MessageBox using ASP.NET,C#

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text;

public static class MessageBox
{
// Create a string builder to help format the javascript
private static StringBuilder sb;

public static void Show(string strMessage)
{
// make sure our string builder is initialized with an empty value
sb = new StringBuilder();

// Rewrite our Message to conform with javascript syntax
strMessage = strMessage.Replace(“\n”, “\\n”);
strMessage = strMessage.Replace(“\”", “‘”);

// Create the javascript to be sent to the client
sb.Append(“<script language=\”javascript\” type=\”text/javascript\”>”);
sb.Append(@”alert( “”" + strMessage + @”"” );“);
sb.Append(@”</script>”);

// Get the page that is requesting this method
Page pgExecutingPage = HttpContext.Current.Handler as Page;

// Wire up the unload event of the requesting page so that we can
// add our javascript to the end of the response
pgExecutingPage.Unload += new EventHandler(pgExecutingPage_Unload);
}

private static void pgExecutingPage_Unload(object sender, EventArgs e)
{
// Write the javascript to the end of the current response
HttpContext.Current.Response.Write(sb);
}
}