Naveen P.N

Master Pages

Naveen P.N — Tue, 20 Jul 2010 01:39:17 +0000

Hi in this post let me explain what is Master Page in ASP.NET and in couple of days I will also post the similar concept how to do in J2EE and PHP.

It is a template page that can be used as a foundation for any number of ASP.NET content pages in your application. In working with master pages, you create a master file that is the template referenced by a subpage or content page. Master pages use a .master file extension, whereas content pages use the .aspx file extension you’re used to; but content pages are declared as such within the file’s Page

Creating a Master Page

Site.master

 <form id="form2" runat="server">
        <div id="topContent">
            <h1><center>NPN Trainingcenter>h1>
        div>
    
        <div id="mainContent">
            <asp:ContentPlaceHolder id="MainContent" runat="server">
            asp:ContentPlaceHolder>
        div>
        
        <div id="leftContent">
            <p style="text-align: center;">
                <asp:Label ID="DateDisplay" runat="server">asp:Label>
            p>
            
            <h3>Sessions Ih3>       
            <ul>
                <li>Intoductionli>
            ul>
 
            <h3>Session IIh3>       
            <ul>
                <li>Master Pagesli>
            ul>
        div>
        
        <div id="footerContent">
            <img src="Images/PoweredByASPNET.gif" alt="Powered by ASP.NET!" />
        div>
    form>

Now let us create content page Right click the project add new item and from the dialog window select web form.

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" Runat="Server">
     <h2>
         About the Authorh2>
     <p>
         Hello! My name is Naveen
     <p>
         My primary experience lies in Web development with Microsoft technologies.p>
 asp:Content>

Specifying the Title, Meta Tags, and Other HTML Headers in the Master Page

By default, two ContentPlaceHolder controls is created when we create a master page:

The head ContentPlaceHolder enables pages to add custom content to the section.

Code Snippet

<head runat="server">
    <title>Untitled Pagetitle>
    <asp:ContentPlaceHolder id="head" runat="server">
    asp:ContentPlaceHolder>
     <link href="Styles.css" rel="stylesheet" type="text/css" />
 
head>

The purpose of ContentPlaceHolder1 is to define a region in the Web Form that can be customized on a page-by-page basis.

one named head, and located in the element; and one named ContentPlaceHolder1, placed within the Web Form. The purpose of ContentPlaceHolder1 is to define a region in the Web Form that can be customized on a page-by-page basis. The head ContentPlaceHolder enables pages to add custom content to the section.

Specifying which Master Page to use

<%@ Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="About.aspx.cs" Inherits="About" Title="About Page"%>

Specifying which Master Page to use in web.config

<pages masterPageFile="~/Site.master">
             <controls>
                 <add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
                 <add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
             controls>
             
         pages>

Specifying the Master Page for a specific folder

<location path="Admin">
         <system.web >
             <pages masterPageFile="~/SiteReplicate.master">
             pages >
         system.web>
     location>

Setting the Page’s Title Declaratively

A content page’s title can be set declaratively through the Title attribute of the <%@ Page %> directive. This property can be set by directly modifying the <%@ Page %> directive or through the Properties window. Let’s look at both approaches.

<%@ Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="About.aspx.cs" Inherits="About" Title="About Page"%>

The page’s title may also be set from the Properties window. From the Properties window, select DOCUMENT from the drop-down list to load the page-level properties, which includes the Title property.

Setting the Page’s Title Programmatically

 protected void Page_Load(object sender, EventArgs e)
     {
         Page.Title = string.Format("{0:d}", DateTime.Now);
     }

Adding and Deleting Data and Transaction Log Files

Naveen P.N — Fri, 25 Jun 2010 02:31:07 +0000

USE [master]

– Find DB’s Physical Filename ——————————————————————————————

SELECT

LTRIM(RTRIM(a.name)) AS ‘Database Name’

, CONVERT(SYSNAME, DATABASEPROPERTYEX(N”+ a.name + ”, ‘Recovery’)) AS [Recovery Model]

, LTRIM(RTRIM(b.name)) AS ‘Logical Filename’

, b.filename AS ‘Physical Filename’

FROM master..sysdatabases a

INNER JOIN master..sysaltfiles b ON a.dbid = b.dbid

WHERE

a.name = ‘pubs’ – database name

ORDER BY a.name

Naveen P.N — Sat, 19 Jun 2010 02:26:06 +0000

Hi ,It has been almost 2 months since i blogged;was stuck up with my project task,but i learnt many things thought of sharing with you.May be couple of days I may post on SQL Server probably queries which I got to know from Database Administrator,hope u will enjoy reading

To Find all Foreign Keys pointing to a Table

EXEC sp_fkeys

Listing all foreign keys in a Database

select distinct object_name(o.parent_obj) as ChildTable from dbo.sysforeignkeys

join sysobjects o on constid = o.id

join syscolumns c on c.id = o.parent_obj and c.colid = fkey

join syscolumns pc on pc.id = rkeyid and pc.colid = rkey

order by ChildTable

Listing all the available tables stored procedure,views

select * from sysobjects where xtype=‘u/p/v/f/fn’

Listing all foreign keys in a tABLE
————————————

select o.name as ForeignKeyName, object_name(o.parent_obj) as ChildTable,

c.name as ReferencingColumnName,object_name(rkeyid) as ParentTable, pc.name as ReferencedColumnName

from dbo.sysforeignkeys

join sysobjects o on constid = o.id

join syscolumns c on c.id = o.parent_obj and c.colid = fkey

join syscolumns pc on pc.id = rkeyid and pc.colid = rkey

where object_name(o.parent_obj)=‘Contact’ order by ChildTable

Listing all primary keys in a table

SELECT Col.Column_Name from

INFORMATION_SCHEMA.TABLE_CONSTRAINTS Tab,

INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE Col

WHERE

Col.Constraint_Name = Tab.Constraint_Name

AND Col.Table_Name = Tab.Table_Name

AND Constraint_Type = ‘PRIMARY KEY ‘

AND Col.Table_Name = ‘’

Listing all primary keys in a database

select * from information_schema.table_constraints where constraint_type = ‘Primary Key’

select distinct object_name(o.parent_obj) as ChildTable

from dbo.sysforeignkeys

join sysobjects o on constid = o.id

join syscolumns c on c.id = o.parent_obj and c.colid = fkey

join syscolumns pc on pc.id = rkeyid and pc.colid = rkey

order by ChildTable

Where div and table can be used

Naveen P.N — Fri, 30 Apr 2010 15:11:28 +0000

Hi recently I came across the specialty of div and table;I was more confused with the popular sayings in the web designing industry”tables design tables design”,still I don't understand where exactly each one should be used;I didn't dig about the issue rather I came across where div can be used and where tables can be used Let us create two sample pages one with div and one with tables

Untitled Page

Hello

Hai

Instead if a situation arises once user clicks button and inspite of block getting dissappearing we wanted the other block to come first then we can use div



 Untitled Page

Know click disable we can see the position of second div changes

.NET Remoting Quick Start

Naveen P.N — Tue, 02 Mar 2010 17:10:27 +0000

Hi these days i was more excited to know more about .NET Remoting .I’m going to put together a few blog postings over the next few weeks that show off ways to use Remoting. This first walkthrough below will help you get started and introduce some of the important concepts.I keep updating as and when i learn so i thought of sharing with you guys.Hope it will help you out to know at least the fundamentals which i am trying to learn ,it is not going to be too deep into the subject but i just wanted to know the overview atleast.Hope you will learn more and also share with me.Check this link for my notes on .NET Remoting where i have cut pasted most of the contents and prepared my own diagram to explain better,hope you will enjoy.

.NET Remoting Notes

Mashup

Naveen P.N — Sun, 21 Feb 2010 02:11:35 +0000

Hi check this slide ,it was the slide which i prepared for my National Level Seminar on the topic Mahup,I am have not explained much about it but i put up my slide hope u all like it.

Mashup

View more presentations from pnnaveen.

WPF Basics

Naveen P.N — Thu, 18 Feb 2010 19:23:55 +0000

Hi in this article i am going to explain in short about Windows Presentation Foundation an awesome technology by Microsoft ,personally i enjoyed reading it especially about XAML its really cool a best alternative to VB.net.I thought of putting more effort on VB.NET but once I cam across Windows Presentation Foundation I really stopped working on it,let me tell some intro about WPF(Windows Presentaion Foundation) code name Avalon.I would like to start with a little bit about history.

Definition

“The Windows Presentation Foundation is Microsofts next generation UI framework to create applications with a rich user interface.”

History

Before the release of WPF, UI developers used to concentrate on various services or API to develop desktop applications to produce simple application to high end graphic application. So it was highly necessary for any developer to concentrate on one or more services or API for building high end graphics.

Developers used to concentrate on many API’s to achieve desired functionality and make UI more attracitve

Forms Dialog boxes ,controls — VB6 MFC

2D Graphics System.Drawing.dll

3D Graphics DirectX

Streaming Video Windows Media Player API

FLow/Mixes Documents PDFs API

In WPF all these is achieved with only Windows Presentation Foundation Framework

LINQ Basics

Naveen P.N — Sat, 23 Jan 2010 02:49:38 +0000

Hai,it as been many days since i blogged,actually i was not having time to blog was busy in searching job………Thats a long story to go.Recently I started to study on LINQ it a awesome techonolgy by microsoft it took almost 20 days to understand the basics ,I thought of sharing with you.Let me start with basic definition.

Defintion

LINQ unifies data access, whatever the source of data, and allows mixing data from different kind of sources.
LINQ provides a uniform way to retrieve data from any object that implements the Enumerable interface.

Microsoft has introduced LINQ with many goals in mind to bring down the way data is accessed from different datasource, by using LINQ we can use a uniform query to perform operations on various datasource, it also answers disadvanatges of SQL

Disadvantages of SQL

Compile time support: You cannot know until run time whether the string is correct because the compiler treats it as a simple string.
Design time support: No tool offers IntelliSense support for these command strings

To solve this queries should be integrated into a language, which then can be verified both during compile time as well as runtime and important part is it can offer intellisence support also.

LINQ addresses both these issues. Because the queries are integrated into the language, they are verified during compilation and you have IntelliSense support for them.

There are various data providers which is shown below

LINQ to Objects
LINQ to XML
LINQ to SQL
LINQ to DataSet
LINQ to Entities

LINQ to Objects

LINQ to Objects allows .NET developers to write “queries” over collections of objects.

let me take 2 example one without LINQ and another using LINQ

Now let us separate the words whose length is greater then 5,To perform this we should iterate all the members of an array which is tedious and with more CPU Utilizing.

class HelloWorld

{

static void Main()

{

string[] words = new string[] {“Sadhana”, “Naveen”, “Praveen”, “Pankaj”, “Abhilash” };

foreach (string word in words)

{

if (word.Length <= 5)

Console.WriteLine(word);

}

The same can be achieved using LINQ

class Hello_LINQ_to_Objects_Demo1

{

static void Main()

{

String[] champion_names = {“Sadhana”, “Naveen”, “Praveen”, “Pankaj”, “Abhilash” };

var short_name = from name in champion_names

where name.Length >= 5

select name;

foreach (var word in short_name)

Console.WriteLine(word);

Console.ReadLine();

}

Take this example which which uses LINQ with class

class CustomerDetails

{

public string customer_name;

public int customer_id;

public string customer_address;

public double customer_purchase_cost;

public string customerName

{

get{return customer_name;}

set{customer_name=value;}

}

public int customerId

{

get{return customer_id;}

set{customer_id=value;}

}

public string customerAddress

{

get{return customer_address;}

set{customer_address=value;}

}

public double customerPurchaseCost

{

get{return customer_purchase_cost;}

set{customer_purchase_cost=value;}

}

class Program

{

static void Main(string[] args)

{

Console.WriteLine(“Enter the Customer Name”);

string name = Console.ReadLine();

var customerdetails = new List<CustomerDetails>

{

new CustomerDetails

{

customerName=“Naveen”,

customerId=110,

customerAddress=“Bannerghatta Road Bangalore 560076″,

customerPurchaseCost=100000

new CustomerDetails

{

customerName=“Praveen”,

customerId=111,

customerAddress=“Adugudi Road Bangalore 560076″,

customerPurchaseCost=100000

new CustomerDetails

{

customerName=“Sadhana”,

customerId=112,

customerAddress=“JP Nagar Bangalore 560076″,

customerPurchaseCost=100000

};

var Found = from details in customerdetails

//where details.customerName == “Sadhana”

where details.customerName == name

select details.customerAddress;

//details.customerId & details.customerAddress;

// Display results.

foreach (var Result in Found)

Console.WriteLine(“Address: “ + Result.ToString());

Console.ReadLine();

}

Error has occurred while establishing a connection to the server

Naveen P.N — Sat, 26 Dec 2009 02:27:07 +0000

Sqlcmd: Error: Microsoft SQL Native Client: An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections.

Are you panic with this type of error then it’s no more, I have found a solution with many attempts to solve this error which I was facing and making my head down.

Whenever you connect to to SQL Server 2005 database including express edition and standard edition and professional the error may occur .To resolve this error just follow these steps it was found by me after many attempts to solve my error and finally landed out with a solution .

The error may look like this

There are 4 ways to get rid of this error.

Enable remote connections
Check SQL Server Browser service.
Ensure the configuration of firewalls is allowing network traffic related to sql server and server browser service.
Check for the Computer Name.

Enable remote connections

This error occurs because under default configuration the sql server will not be configured to accept remote connections.

To enable remote connections just follow the steps

Click on start->Programs->Microsoft Sql server 2005->Sql server configuration tools-> Sql server Surface area connection as below

Click the text which is highlighted and u will we will get a new a new screen. In the new screen enable select Remote connections and check the radio buttons as shown is the figure.

Enable SQL Server Browser service.

If the service is stopped start the service this will not be the case usually,make startup automatic and then click apply.

Check for the Computer Name.

The computer name should match with our server name of SQL Server .

Project-Based Development and Projectless-Based Development

Naveen P.N — Fri, 23 Oct 2009 01:09:50 +0000

Introduction

Web Project can be developed of two types

a) Projectless Based Development

b) Project Based Development or web project

Project less Based Development

Creating websites of this form is called project less applications. It has its own advantages over Project Based Development.

The advantages include

a) It simplifies deployment: We can simply copy the files in the website directory to the web server.

b) It simplifies file management: Adding , deleting and moving files is very easy u can just delete, add or move a web page ,there is no need to go through Visual Studio or edit the project file.

c) It simplifies team collaboration: Each team can work independently on different pages.

d) It simplifies debugging: Creating a web project ,you must recompile the entire application when you change a single file With project less development, each

page is compiled separately, and the page is only compiled when you request it for the first time.

Project Based Development or Web Project

Creating project of this form is called Project Based Development or simply Web Project. If we create application of this form Visual Studio generates a number of extra files, including .csproj and .csproj.user project files and .sln solution file.

When you build your application, Visual Studio generates temporary files, which is places in the Obj subdirectory, and one or more .pdb files (in the Bin subdirectory) with debugging symbols. None of these files should be deployed to the web server when your web application is complete. Furthermore, none of the C# source code files (files with the extension .cs) should be deployed, because Visual Studio recompiles them into a DLL assembly.

However both are same once they are deployed to the web server,but they differ in their structure .The difference include

a) Compilation: Web projects are compiled by Visual Studio and not ASP.NET when they run. All the web pages classes is combined into a single assembly that has the name of web project(like web project.dll);

b) Code-behind: The web pages also uses code behind file however they include one additional file with an extension .aspx.designer.cs.

c) Assembly references: In a project less website ,all the assembly references are recorded in the web.config file

Other posts

* Using C# and VB classed together in the App_Code folder :

* ASP.NET Application Folders

* Creating Dynamic Linking Library using ASP.NET

* VB Style Calendar in ASP.NET

* Sending SMS from ASP.NET Application

* View State

* What is the difference between Server.Transfer and Response.Redirect?

* Text to Speech in ASP.NET

* Using C# and VB classed together in the App_Code folder :

http://naveenpn.wordpress.com/2009/10/23/using-c-and-vb-classed-together-in-the-app_code-folder/

* ASP.NET Application Folders

http://naveenpn.wordpress.com/2009/10/08/asp-net-application-folders/

* Creating Dynamic Linking Library using ASP.NET

http://naveenpn.wordpress.com/2009/10/05/creating-dynamic-linking-library-using-asp-net/

* VB Style Calendar in ASP.NET

http://naveenpn.wordpress.com/2009/09/27/vb-style-calendar-in-asp-net/

* Sending SMS from ASP.NET Application

http://naveenpn.wordpress.com/2009/09/27/sending-sms-from-asp-net-application/

* View State

http://naveenpn.wordpress.com/2009/09/13/view-state/

* What is the difference between Server.Transfer and Response.Redirect?

http://naveenpn.wordpress.com/2008/06/11/aspnet/

* Text to Speech in ASP.NET

http://naveenpn.wordpress.com/2009/08/27/text-to-speech-in-asp-net/

AJAX Control Toolkit

——————–

* Traditional Page Updates VS AJAX Page Updates

http://naveenpn.wordpress.com/2009/08/29/traditional-page-updates-vs-ajax-page-updates/