Partial Page Update In ASP.NET

Partial Page Update

In this article, I will show you step by step procedure, how to use a Partial Page Update

In ASP.NET using Visual Studio 2005 or Visual Studio 2008.

The use of Partial Page Update it that if you want to update the specific part of the web page then you can use it…

To follow this code sample, you must use Visual Studio 2005 or Visual Studio 2008.

I have used <! – –> to comment HTML part of the code.

Step 1. Start -> All Programs -> Visual Studio 2005 or Visual Studio 2008

Step 2. Now go to File Menu -> New -> Web Site

Step 3.

Under Visual Studio Installed Template-> Choose ASP.NET WEB SITE -> Choose File System from the location combo box -> Set the path by the browse button - > Choose the language from the Language ComboBox (Visual C# , Visual Basic , J #)

Choose Visual C#

Step 4. Click on the OK Button.

This is the source code window and in this page you will se this code.

<%@ Page Language=”C#” AutoEventWireup=”true” CodeFile=”Default.aspx.cs” Inherits=”_Default” %>

<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”>

<title>Type your webpage title here</title> <!– Here you can specify your page title in between title tag ->

</head>

<body>

<div>

<!– In between div tags you can manage your web controls like buttons, labels, picture Box, ImageMap etc –>

</div>

</form>

</body>

</html>

See here is a tab named Design in the bottom of this page.

Step 5. Click on this tab and you will see a blank web page where you can drag any control from the toolbox (which is in the left side of this window).

Step 6. Now See the code carefully

I suggest you to not to drag the controls from the toolbox please type the code it’s good..

First control you are going to drag and drop on the page is - Script Manager.

Under the form tag,

Don’t be frustrate on seeing this code please read carefully it’s very simple.

<div>

<asp:ScriptManager ID="ScriptManager1" runat="server">

</asp:ScriptManager>

<asp:Panel ID="Panel1" runat="server" BackColor="LightSeaGreen" BorderColor="DarkRed" BorderStyle="Double">

<asp:Label ID="label1" runat="server"></asp:Label>

<br />

<asp:UpdatePanel runat="server" ID="Up1">

<asp:Panel ID="Panel2" runat="server" BackColor="LightPink" BorderColor="DarkBlue" BorderStyle="Solid">

<asp:Label ID="label2" runat="server"></asp:Label>

<br />

<asp:Button ID="button1" runat="server" Text="Partial Update" />

</asp:Panel>

</ContentTemplate>

</asp:UpdatePanel>

<br />

<asp:Button ID="button2" runat="server" Text="Full Update" />

</asp:Panel>

</div>

Step 7. Now type this code under this line…

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

protected override void OnLoad(EventArgs e)

{

base.OnLoad(e);

string time=DateTime.Now.ToString();

label1.Text=time;

label2.Text=time;

}

Step 8. Now run your web site by Ctrl + F5

OUT PUT
Step 9. When you run the Partial Page Update will seem like this...

Partial page Update.JPG

Here are two buttons One Partial Update and Full Update

When you click the Partial Update then only the pink background time will update

And when you click the Full Update Button both backgrounds color will update….

Step 10. Close Browser

Step 11. Close Visual Studio…

Thanks!

--Nikhil Kumar