computer graphics and types of computer graphics

computer graphics refers to creation, storage and manipulation of pictures and drawing using a computer .
graphics enhances the communication between user and computer. A major application of computer graphics is designing.

Application of computer graphics.

1.CAD
2.CAM
3.Entertainment.
4.training.
5.Graphical user interface.

Computer graphics are of two types .

1.interactive
2.non-interactive.

Interactive computer graphics

Interactive computer graphics involves a two way communication between user and computer graphics.
The user give some control over images by providing him an input devise.
ex; video game

Non interactive computer graphics.

In this type of computer graphics user have no control over images .. so it is called passive computer graphics.
ex; screen saver.

UPLOADING IMAGE IN WINDOWS USING C#

UPLOADING IMAGE IN WINDOWS C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Data.SqlClient;

namespace stream
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

BROWSE IMAGE CODE

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog open = new OpenFileDialog();
            open.Filter = "Image Files(*.jpg; *.jpeg; *.gif; *.bmp)|*.jpg; *.jpeg; *.gif; *.bmp";
            if (open.ShowDialog() == DialogResult.OK)
            {
                // display image in picture box
                //pictureBox1.Image = new Bitmap(open.FileName);
                // image file path
              textBox3.Text = open.FileName;
            }
         
        }

UPLOADING IMAGE IN DATABASE

        private void button2_Click(object sender, EventArgs e)
        {
            FileStream fs = new FileStream(textBox3.Text,FileMode.Open);
            Byte[] arr = new Byte[fs.Length];
            fs.Read(arr, 0, Convert.ToInt32(fs.Length));
            SqlConnection con = new SqlConnection("Data Source=INDIA;Initial Catalog=directory;Integrated Security=True");
            SqlCommand cmd = new SqlCommand("insert into imagetable  values(@id,@image)", con);
            cmd.Parameters.AddWithValue("@id", Convert.ToInt32(textBox1.Text));
            cmd.Parameters.AddWithValue("@image", arr);
            con.Open();
            cmd.ExecuteNonQuery();
         
            con.Close();
            MessageBox.Show("data saved");
       
         
        }
    }
}

COPYING FILE USING FILE HANDLING

FILE HANDLING 

STREAM

STREAM IS A CONCEPT BY WHICH WE CAN CONNECT DIFFERENT DEVICES LIKE CONSOLE,HDD,PENDRIVE ETC AND ALSO USE READ AND WRITE OPERATIONS.  

TYPES OF STREAM

• FILE ORIENTED STREAM.
• CHARACTER ORIENTED STREAM.

EXAMPLE OF FILE STREAM

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.IO;

namespace FileHandling

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        

        private void copyingfi_Click(object sender, EventArgs e)

        {

            FileStream source = new FileStream("C:\\sachin.ini", FileMode.Open);

            FileStream destination = new FileStream("D:\\sachin.ini", FileMode.Create);

            source.CopyTo(destination);

            while (true)

            {

                int i = source.ReadByte();

                if (i == -1)

                {

                    break;

                    destination.WriteByte(Convert.ToByte(i));

                  

                }

                

                destination.Close();

                

            }

        }

    }

}

racing numbers using multithreading in c#.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;

namespace MultiThreading
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private bool check = true;
        public void race1()
        {
            for (int i = 0; i <=5000; i++)
            {
                if(check)
                {
                    textBox1.Text = i.ToString();
                }
                else
                    break;
            }
            check = false;
        }
        public void race2()
        {
            for (int i = 0; i <=5000; i++)
            {
                if (check)
                {

                    textBox2.Text = i.ToString();
                }
                else
                    break;
            }
            check = false;
        }
        private void button1_Click(object sender, EventArgs e)
        {
            Thread th1 = new Thread(race1);
            th1.Name = "thread1";
            Thread th2 = new Thread(race2);
            th2.Name = "thread2";
            th1.Start();
            th2.Start();
        }

 private void btnsuspend_Click(object sender, EventArgs e)
        {

            Thread th1 = new Thread(race1);
           
            Thread th2 = new Thread(race2);
          
            th1.Suspend();
            th2.Suspend();
        }

        private void btnresume_Click(object sender, EventArgs e)
        {
            Thread th1 = new Thread(race1);

            Thread th2 = new Thread(race2);

            th1.Resume();
            th2.Resume();
        }

        private void btnabort_Click(object sender, EventArgs e)
        {
             Thread th1 = new Thread(race1);

            Thread th2 = new Thread(race2);

            th1.Abort();
            th2.Abort();
        } private void btnsuspend_Click(object sender, EventArgs e)
        {

            Thread th1 = new Thread(race1);
           
            Thread th2 = new Thread(race2);
          
            th1.Suspend();
            th2.Suspend();
        }

        private void btnresume_Click(object sender, EventArgs e)
        {
            Thread th1 = new Thread(race1);

            Thread th2 = new Thread(race2);

            th1.Resume();
            th2.Resume();
        }

        private void btnabort_Click(object sender, EventArgs e)
        {
             Thread th1 = new Thread(race1);

            Thread th2 = new Thread(race2);

            th1.Abort();
            th2.Abort();
        } private void btnsuspend_Click(object sender, EventArgs e)
        {

            Thread th1 = new Thread(race1);
           
            Thread th2 = new Thread(race2);
          
            th1.Suspend();
            th2.Suspend();
        }

        private void btnresume_Click(object sender, EventArgs e)
        {
            Thread th1 = new Thread(race1);

            Thread th2 = new Thread(race2);

            th1.Resume();
            th2.Resume();
        }

        private void btnabort_Click(object sender, EventArgs e)
        {
             Thread th1 = new Thread(race1);

            Thread th2 = new Thread(race2);

            th1.Abort();
            th2.Abort();
        }


 {  
        private void Form1_Load(object sender, EventArgs e)
        {
            Control.CheckForIllegalCrossThreadCalls = false;
        }
    }
}

   

Introduction of ASP.NET

                        About asp.net

Asp.net is a wep applications framework developed and marked by Microsoft to allow programmers to build dynamic websites.

                  Definition of asp.net

Asp.net is a web development platform which provides a programming model, a comprehensive software infrastructure and various services required to build up robust web applications PC as well as mobile device. Asp.net works on top of the http command's and policies to set a browser to server bilateral communication and cooperation. Asp.net is a part of Microsoft .net platforms
ASP.NET is great for building standards-based websites with HTML5, CSS3, and JavaScript. ASP.NET supports three approaches for making web sites. ASP.NET Web Forms uses controls and an event-model for component-based development. ASP.NET MVC values separation of concerns and enables easier test-driven development. ASP.NET Web Pages prefers a single page model that mixes code and HTML markup. You can mix and match these techniques within one application depending on your needs - it's all One ASP.NET.

stored procedure and multiple query in a single procedure.

Definition of stored procedure.

In a database management system (DBMS), a stored procedure is a set of Structured Query Language (SQL) statements with an assigned name that's stored in the database in compiled form so that it can be shared by a number of programs. The use of stored procedures can be helpful in controlling access to data (end-users may enter or change data but do not write procedures), preserving data integrity (information is entered in a consistent manner), and improving productivity (statements in a stored procedure only need to be written one time).

Create a stored procedure.

create procedure myprocedure

as

begin

(query)

end 

Multiple query in a single procedure.

 

 USE [SqlPractise]

GO

/****** Object:  StoredProcedure [dbo].[myprocedure]    Script Date: 01/15/2016 09:30:15 ******/

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

ALTER proc [dbo].[myprocedure]

@function nvarchar(50)=null,

@Emailid nvarchar(50)=null,

@sreno int= 0,

@name nvarchar(50)=null,

@password nvarchar(50)=null,

@status nvarchar(50)=null,

@activation nvarchar(50)=null

as

begin

if @function='insert'

begin

insert into dbo.gridview(name,Emailid,password,status,activation)values (@name,@Emailid,@password,@status,@activation)

end

if @function='select'

begin

select *from dbo.gridview

end

if @function='selecttrue'

begin

select *from dbo.gridview where activation='true'

end

if @function='selectfalse'

begin

select *from dbo.gridview where activation='false'

end

if @function='update'

begin

update dbo.gridview  set name=@name,Emailid=@Emailid, password =@password,status=@status,activation=@activation

end

if @function='delete'

begin

delete from dbo.gridview where Emailid=@Emailid

end

if @function='search'

begin

select * from dbo.gridview where Emailid=@Emailid and password =@password

end

if @function='update1'

begin

update dbo.gridview  set activation='true' where Emailid=@Emailid

end

end

reversing string and count string in c#.net

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace reversing_of_string
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        string str, revstring;
            int length;

        private void button1_Click(object sender, EventArgs e)
        {
          //  string sac;
            str = txtrev.Text;
            length = str.Length - 1;

            while (length>=0)
            {
               // sac = length + 1.ToString();
                revstring = revstring + str[length];
                length--;
             
            }
            MessageBox.Show(revstring);
        }
        private int getcount(string text)
        {
            int wordcount=text.Split(' ').Length;
            return wordcount;

        }

        private void button2_Click(object sender, EventArgs e)
        {
            int mm = getcount(txtrev.Text);
            MessageBox.Show(mm.ToString());

        }
    }
}