Find current URL of an IE instance from a C# application

We all know that to get the current URL of the browser for an Web Application can be find by

HttpContext.Current.Request.Url.AbsolutePath

But to find out the current URL of IE from a C# application following scripts can be useful

            SHDocVw.ShellWindows shellWindows = new SHDocVw.ShellWindowsClass();

            foreach (SHDocVw.WebBrowser ies in shellWindows)
            {
                Console.WriteLine(ies.LocationURL);
            }


Windows PowerShell 2.0 Best Practices (Best Practices (Microsoft))

Open an Internet Explorer from C# Application

First of all add reference the SHDocVw.dll to the apllication.

             object o = null;
            SHDocVw.InternetExplorer ie = new  SHDocVw.InternetExplorerClass();
            IWebBrowserApp wb = (IWebBrowserApp)ie;
            wb.Visible = true;

            //Do anything else with the window here that you wish
            wb.Navigate("http://google.com", ref o, ref o, ref o, ref o);

Internet Explorer 8, Illustrated Essentials

Serialisation and Deserialisation Class

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.IO;
using System.Xml.Serialization;

/// <summary>
/// Summary description for Serialization
/// </summary>
public class Serialization
{
    public static string StringSerialize(object instance)
    {
        MemoryStream m = new MemoryStream();
        XmlSerializer x = new XmlSerializer(instance.GetType());
        x.Serialize(m, instance);
        byte[] b = m.ToArray();
        string s = System.Text.ASCIIEncoding.ASCII.GetString(b);
        return s;
    }
    public static byte[] ByteSerialize(object instance)
    {
        MemoryStream m = new MemoryStream();
        XmlSerializer x = new XmlSerializer(instance.GetType());
        x.Serialize(m, instance);
        byte[] b = m.ToArray();
        return b;
    }
    public static object DeSerialize(string Text, Type type)
    {
        byte[] b = System.Text.ASCIIEncoding.ASCII.GetBytes(Text);
        MemoryStream m = new MemoryStream(b);
        XmlSerializer x = new XmlSerializer(type);
        object o = x.Deserialize(m);
        return o;
    }
    public static object DeSerialize(byte[] b, Type type)
    {
        MemoryStream m = new MemoryStream(b);
        XmlSerializer x = new XmlSerializer(type);
        object o = x.Deserialize(m);
        return o;
    }
}

Ajax, Update Panel, Script Manager, Update Controls Outside Update Panel With Out Postback

Here my first post is regarding Ajax.
So here I am going to give you a simple example how to update the controls outside the update panel without postback

Code behind file


using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class scriptMgr : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
Label1.Text = "Label1 upadte" + DateTime.Now.ToString();
Label2.Text = "Label2 updated" + DateTime.Now.ToString();
if (ScriptManager1.IsInAsyncPostBack)
{

ScriptManager1.RegisterDataItem(Label3, DateTime.Now.ToString());
}
}
protected void Button2_Click(object sender, EventArgs e)
{
Label1.Text = "Label1 " + DateTime.Now.ToString();
Label2.Text = "Label2 " + DateTime.Now.ToString();
if (ScriptManager1.IsInAsyncPostBack)
{
ScriptManager1.RegisterDataItem(Label3, "Label3 "+DateTime.Now.ToString());
}
}
}



Aspx page

 <div>
        <asp:ScriptManager ID="ScriptManager1" runat="server">
        </asp:ScriptManager>
        <script type="text/javascript" language="javascript">
        Sys.WebForms.PageRequestManager.getInstance().add_pageLoading(PageLoadingHandler);
        function PageLoadingHandler(sender, args) {
            var dataItems = args.get_dataItems();
            if ($get('Label3') != null)
                $get('Label3').innerHTML = dataItems['Label3'];
         
        }
    </script>
        <asp:UpdatePanel ID="UpdatePanel1" runat="server">
        <ContentTemplate>
            <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label><br />
            <asp:Label ID="Label2" runat="server" Text="Label"></asp:Label><br />
            <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" /><br />
        </ContentTemplate>
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="Button2" EventName="Click" />
            </Triggers>
        </asp:UpdatePanel>
       
        <asp:Label ID="Label3" runat="server" Text="krwelkr"></asp:Label>
        <asp:Button ID="Button2" runat="server" Text="Button" onclick="Button2_Click" />
    </div>
  

You can find Ajax Books

Professional ASP.NET 3.5 AJAX (Wrox Programmer to Programmer)
Microsoft ASP.NET and AJAX: Architecting Web Applications (PRO-Developer)

Very Simple Linq Usage Sample

Here I will give one very simple linq sample code.

A query that will return each of the items in the people List collection by aliasing the people collection with a variable p and then selecting p (p is of type string remember as the people List is a collection of immutable string objects).

You may notice that query is of type IEnumerable - this is because we know that query will hold an enumeration of type string. When we foreach through the query the GetEnumerator of query is invoked.

protected void Page_Load(object sender, EventArgs e)
{
List people = new List(){
"Sen", "Paulose", "Thomas", "Raju",
"Anil", "Shyam", "Saidwin"
};

IEnumerable query = from p in people select p;
foreach (string person in query)
{
Response.Write(person);
}
}