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SELECT | INSERT | UPDATE | DELETE CODE IN VB.NET WITH AUTO INCREMENT CONCEPT

Database.vb Imports System.Data.SqlClient Public Class Database     Dim con As New SqlConnection( "Data Source=G20;Initial Catalog=Me;Integrated Security=True" )     Public Sub cnopen()         If con.State = ConnectionState.Open Then             con.Close()         End If         con.Open()     End Sub     Public Sub cnclose()         If con.State <> ConnectionState.Closed Then             con.Close()         End If     End Sub     Public Function Displaygrid( ByVal query As String ) As DataTable         Dim dt As N...
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COMBO BOX BIND WITH SQL IN ASP.NET

private void bindcombo()     {         string sql = "select * from qualification_m" ;         DataSet ds = new DataSet ();         SqlDataAdapter da = new SqlDataAdapter ();         using ( SqlConnection myConnection = new SqlConnection (connectionString))         {             myConnection.Open();             SqlCommand myCommand = new SqlCommand (sql, myConnection);             myCommand.ExecuteNonQuery();             da.SelectCommand = myCommand;             da.Fill(ds);    ...
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DIALOG BOX SHOW CODE IN SWING JAVA

import javax.swing.*; import java.awt.event.*; public class Dialog {   JFrame frame;   JPanel p;   public Dialog(){   frame = new JFrame("Show Message Dialog");   p=new JPanel();   JButton button = new JButton("Click Me");   button.addActionListener(new MyAction());     p.add(button);   frame.add(p);   frame.setSize(400, 400);   frame.setVisible(true);   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);   }   public class MyAction implements ActionListener{   public void actionPerformed(ActionEvent e){   JOptionPane.showMessageDialog(frame,"My DialogBox");   }   }  public static void main(String[] args)  {     Dialog db = new Dialog();   } }
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COMBO BOX EVENT HANDLING CODE IN SWING JAVA

package Swing; /**  *  * @author Administrator  */ import java.awt.*; import java.awt.event.*; import javax.swing.*; public class ComboBox1 implements ActionListener { JFrame fr; JPanel p; JTextField t1; JComboBox c1;     ComboBox1()     {     fr=new JFrame("My ComboBox");         p=new JPanel();     t1=new JTextField();     p.setLayout(null);     c1=new JComboBox();     c1.addItem("INDIA");     c1.addItem("JAPAN");     c1.addItem("ENGLAND");     c1.addItem("AUSTRALIA");     c1.addItem("NEW ZEELAND");     c1.addActionListener(this);     t1.setBounds(120,60, 100,25);     c1.setBounds(20,60,100,25);     p.add(t1);     p.add(c1);     fr.add(p);     fr.addWindowListener(new wclose());     fr.setSize(500,500);     fr...
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DATABASE UPDATION CODE IN VB.NET

Private Sub BTNUPDATE_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BTNUPDATE.Click         connetionString = " Data Source=KEERTIG-PC\SQLEXPRESS;Initial Catalog=GAURAV1;Integrated Security=True"         connection = New SqlConnection(connetionString)         sql = "UPDATE ROOM_BOOKING SET FIRST_NAME= '" & TXTBSFNAME.Text & "',MIDDLE_NAME= '" & TXTBSMNAME.Text & "',LAST_NAME= '" & TXTBSLNAME.Text & "',NUM_OF_ROOM= '" & TXTBSNOROOM.Text & "',NUM_OF_DAYS= '" & TXTBSNODAYS.Text & "',MOBILE_NO= '" & TXTBSMOBNO.Text & "',ADDERESS= '" & TXTBSADDRESS.Text & "',ROOMBK_PRICE= '" & TXTBSPRICE.Text & "' WHERE ROOMBK_ID = '" & TXTBSBID.Text & "'  "         Try             connection.Open()             MsgBox(...
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AUTO INCREMENT CODE IN VB.NET

    Sub ldfrm()         Dim connetionString As String = Nothing         Dim connection As SqlConnection         Dim command As SqlCommand         Dim adapter As New SqlDataAdapter()         Dim ds As New DataSet()         Dim sql As String = Nothing         connetionString = "Data Source=KEERTIG-PC\SQLEXPRESS;Initial Catalog=GAURAV1;Integrated Security=True"         sql = "Select  * from ROOM_BOOKING"         connection = New SqlConnection(connetionString)         Try             connection.Open()             command = New SqlCommand(sql, connection)             adapter.SelectCommand = command             adapter.Fill(ds, "ROOM_BOOKING") ...
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PHP CODE TO DISPLAY IMAGE

<html>     <head>         <title>Img to PHP</title>     </head>     <body>         <?php         $x=0;         echo "<h4>";                echo "<u>LOOP1</u>";                 while($x<=5)                 {                     //echo " ".$x;                     $x++; //$x=$x+1                         ?>         <font color="red">HELLO PHP</font>     <?php     echo ''.$x.'.jpg';     echo "<br>";     echo '<img src='.$x.'.jpg'.' '.'height=50 ...
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TO TAKE ANY CHARACTER AS INPUT & DETERMINE THAT CHARACTER IS VOWELS OR CONSONANT

public class vowel {     public static void main(String[] args) throws IOException     {         char c;         int n;         InputStreamReader in = new InputStreamReader(System.in);         BufferedReader br = new BufferedReader(in);         System.out.println("Enter Character : ");         c=(char)br.read();         System.out.println("Ur Input values : "+c);         switch(c)         {             case 'A':             case 'a' :System.out.println("Its vowel A"); break;             case 'E':             case 'e':System.out.println("Its vowel E"); break;             case 'I':             ...
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TAKE INPUT IN JAVA AS A CHARACTER

 import java.io.*;  public class Charinput {  public static void main(String[] args) throws IOException     {         char ch;         InputStreamReader in = new InputStreamReader(System.in);         BufferedReader br = new BufferedReader(in);         System.out.println("Enter Character : ");         ch=(char)br.read();         System.out.println("Ur Input values : "+ch);    } }
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SWING PROGRAM TO CHANGE BACKGROUND COLOR BASED ON BUTTON CLICK

/*  * To change this template, choose Tools | Templates  * and open the template in the editor.  */ package Swing; /**  *  * @author Administrator  */ import java.awt.Color; import javax.swing.*; import java.awt.event.ActionListener; import java.awt.event.*; class Buttoncolor implements ActionListener {     JFrame fr;     JPanel p;     JButton b1,b2,b3,b4,b5;     Buttoncolor()     {         fr=new JFrame("CLICK EVENT ON BUTTON COLOR SWING");         p=new JPanel();                 b1=new JButton("RED");         b2=new JButton("GREEN");         b3=new JButton("BLUE");         b4=ne...
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SWING PROGRAM TO IMPLEMENTS CALCULATOR

/*  * To change this template, choose Tools | Templates  * and open the template in the editor.  */ package Swing; /**  *  * @author Administrator  */ import java.awt.Color; import javax.swing.*; import java.awt.event.ActionListener; import java.awt.event.*; public class Calculator implements ActionListener{     JFrame fr;     JPanel p;     JTextField t1,t2,t3;     JLabel l1,l2,l3;     JButton b1,b2,b3,b4,b5;         Calculator()     {         fr=new JFrame("CALCULATE");         p=new JPanel();         p.setLayout(null);         l1=new JLabel("Enter First Number : ");         l2=new JLabel("Enter Second N...
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Directory Structures :

Directory Structures : Information in a Device Directory Name Type Address Current length Maximum length Date last accessed (for archival) Date last updated (for dump) Owner ID (who pays) Protection information (discuss later) Operations Performed on Directory Search for a file Create a file Delete a file List a directory Rename a file Traverse the file system Organize the Directory (Logically) to Obtain Efficiency   – locating a file quickly. Naming   – convenient to users.   1.   Two users can have same name for different files.   2.   The same file can have several different names. Grouping   – logical grouping of files by properties, (e.g., all Java programs, all games, …) Single-Level Directory          A single directory for all users. Naming problem Grouping problem Two-Level Directory Separate directory for each user.  ...
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