Correlated SubQuery...

What Is Correlated Subquery...??
If the Subquery depends on the outer query for its values than that Subquery  is called Correlated Subquery

Example:

First of create  2 Table Like

(1) Table Tbl_Product
create table Tbl_Product
(
    Id int identity ,
    Name varchar(500)
)
(2)Table Tbl_Product_Sales
 create table Tbl_Product_Sales
(
    Id int identity,
    ProductId int,
    Quntity int
)

Now Insert Record Into Table Like.

Insert Record As per Image Given Below Into Tbl_Product ..

Insert Record As per Image Given Below Into Tbl_Product_Sales ..

Now, How to Write SubQuery......(Show Example1, Example2)

Example1:-
select Id , Name  from
Tbl_Product where Id NOT IN (select distinct ProductId   from Tbl_Product_Sales )

Example2:-
select Name ,
(select SUM (Quntity)  from Tbl_Product_Sales where ProductId  = Tbl_Product .Id  )as TotalQuantity
 from Tbl_Product

Enjoyyyyyyyyyyyyyyyyyyy......
By:- Arvind Kataria.

Insert Update Delete in Repetar in asp.net...........

First create Table 

Now Design  Web-Form like..

Design file code(.aspx file)


<div>
    <table>
    <tr>
        <td>Name:</td>
        <td><asp:TextBox runat="server" ID="txtname"></asp:TextBox></td>
    </tr>
    <tr>
        <td>Email:</td>
        <td><asp:TextBox runat="server" ID="txtemail"></asp:TextBox></td>
    </tr>
    <tr>
        <td colspan="2" align="center"><asp:Button  runat="server" ID ="btnsubmit"
                Text="Submit" onclick="btnsubmit_Click"/></td>
    </tr>
    </table>
     <asp:Repeater ID="Repeater1" runat="server" onitemcommand="Repeater1_ItemCommand">
        <HeaderTemplate>
            <table>
                <tr>
                    <th align="left" width="250px" class="name">
                    </th>
                    <th align="right" width="250px" class="size">
                    </th>
                </tr>
            </table>
        </HeaderTemplate>
        <ItemTemplate>
            <table>
                <tr>
                    <td align="left" width="250px" class="name">
                    <asp:Label ID="lblname" runat="server" Text='<%# Eval("Name")%>'></asp:Label>
                      
                    </td>
                    <td align="left" width="250px" class="name">
                    <asp:Label ID="lblemail" runat="server" Text='<%# Eval("Email")%>'></asp:Label>
                      
                    </td>
                    <td align="left" width="250px" class="name">
                    <asp:Label ID="lblid" runat="server" Text='<%# Eval("ID")%>' Visible="false"></asp:Label>
                      
                    </td>
                    <td>
                  <asp:LinkButton ID="lnkEdit" runat="server" CommandArgument='<%#Eval("ID") %>' CommandName="edit">Edit</asp:LinkButton>
                  </td>
                   <td>
                  <asp:LinkButton ID="Lnkdelete" runat="server" CommandArgument='<%#Eval("ID") %>' CommandName="Delete" OnClientClick="return confirm('Are u sure u wnat to delete this record?');">Delete</asp:LinkButton>
                  </td>
                 
                </tr>
               
               
            </table>
        </ItemTemplate>
    </asp:Repeater>
    </div>

code Behind (.CS File code)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;

namespace repetar1
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        static int CuID;
        protected void Page_Load(object sender, EventArgs e)
        {
            fillrepetar();
        }

        private void fillrepetar()
        {
            SqlConnection con = new SqlConnection("Data Source=ARVINDKATARIA\\SQLEXPRESS;Initial Catalog=practice;Integrated Security=True");
            con.Open();
            SqlCommand cmd = new SqlCommand("select * from namedetail", con);
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            DataTable dt = new DataTable();
            sda.Fill(dt);
            cmd.ExecuteReader();
            Repeater1.DataSource = dt;
            Repeater1.DataBind();
            con.Close();
        }

        protected void btnsubmit_Click(object sender, EventArgs e)
        {
            if (btnsubmit.Text == "Submit")
            {
                SqlConnection con = new SqlConnection("Data Source=ARVINDKATARIA\\SQLEXPRESS;Initial Catalog=practice;Integrated Security=True");
                con.Open();
                SqlCommand cmd = new SqlCommand("INSERT INTO  namedetail(Name,Email)VALUES('" + txtname.Text + "','" + txtemail.Text + "')", con);
                cmd.ExecuteNonQuery();
                con.Close();
            }
            else
            {
                SqlConnection con = new SqlConnection("Data Source=ARVINDKATARIA\\SQLEXPRESS;Initial Catalog=practice;Integrated Security=True");
                con.Open();
                SqlCommand cmd = new SqlCommand("update namedetail set Name='" + txtname.Text + "' , Email='" + txtemail.Text + "' where id = '" + CuID + "' ", con);
                cmd.ExecuteNonQuery();
                con.Close();
                fillrepetar();
            }
        }

        protected void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e)
        {
            if (e.CommandName == "edit")
            {
                Label l3 = (Label)e.Item.FindControl("lblid");
                CuID = Convert.ToInt32(l3.Text);
                Label l1 = (Label)e.Item.FindControl("lblname");
                txtname.Text = l1.Text;
                Label l2 = (Label)e.Item.FindControl("lblemail");
                txtemail.Text = l2.Text;
                btnsubmit.Text = "Update";
            }
          
            if (e.CommandName == "Delete")
            {
                Label l3 = (Label)e.Item.FindControl("lblid");
                CuID = Convert.ToInt32(l3.Text);
                SqlConnection con = new SqlConnection("Data Source=ARVINDKATARIA\\SQLEXPRESS;Initial Catalog=practice;Integrated Security=True");
                con.Open();
                SqlCommand cmd = new SqlCommand("delete from namedetail where ID = '" + CuID + "' ", con);
                cmd.ExecuteNonQuery();
                fillrepetar();
            }
          
        }
    }
}

Show Edit like...

 

Show Delete Like....

 

Enjoyyyyyyyy......

Insert , Delete , View In Console Application........

Insert , Delete , View In Console Application........

class Program
    {

        public  static void insert()
        {
            SqlConnection con = new SqlConnection("Data Source=ARVIND-KATARIA\\SQLEXPRESS;Initial Catalog=practice;Integrated Security=True");
            SqlCommand com = new SqlCommand();
            com.Connection = con;
            com.CommandType = CommandType.Text;
            Console.WriteLine("Enter student id");
            int id = Convert.ToInt16(Console.ReadLine());
            Console.WriteLine("Enter student Name");
            string name = Convert.ToString(Console.ReadLine());

            com.CommandText = "insert into stu1(ID,Name)values(@param1,@param2)";
            com.Parameters.AddWithValue("@param1", id);
            com.Parameters.AddWithValue("@param2", name);

            con.Open();
            SqlDataReader datareader = com.ExecuteReader();
            DataTable dt = new DataTable();
            dt.Load(datareader);
            Console.WriteLine("\n Record insert ");

        }
        public static void display()
        {
            SqlConnection con = new SqlConnection("Data Source=ARVIND-KATARIA\\SQLEXPRESS;Initial Catalog=practice;Integrated Security=True");
            con.Open();
            DataSet ds = new DataSet();
            try
            {
                string sql = "select * from stu1";
                SqlCommand cmd = new SqlCommand(sql, con);
                SqlDataReader dr = cmd.ExecuteReader();
                while (dr.Read())
                {
                   
                    printrow(Convert.ToString(dr["ID"]), Convert.ToString(dr["Name"]));

                }

                con.Close();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);

            }

           
        }
        static void printline()
        {
            Console.WriteLine(new string('-', 80));
        }
        static void printrow(string ID, string Name)
        {
            Console.WriteLine(string.Format("|{0}|{1}|", AlignCenter(ID, 17), AlignCenter(Name, 17)));
        }
        static string AlignCenter(string text, int width)
        {

            if (string.IsNullOrEmpty(text))
            {
                return new string(' ', width);

            }

            else
            {

               
                return text.PadRight(width - (width - text.Length) / 2).PadLeft(width);

            }

        }
       
         
        public static void delete()
        {
            SqlConnection con = new SqlConnection("Data Source=ARVIND-KATARIA\\SQLEXPRESS;Initial Catalog=practice;Integrated Security=True");
            SqlCommand com = new SqlCommand();
            com.Connection = con;
            com.CommandType = CommandType.Text;
            Console.WriteLine("Enter student  id");
            string id1 = Convert.ToString(Console.ReadLine());

            Console.WriteLine("Enter student Name");
            string name1 = Convert.ToString(Console.ReadLine());

            com.CommandText = string.Format("delete from stu1 where ID={0}", id1);
            com.Parameters.AddWithValue("@param1", "id");

            con.Open();
            SqlDataReader datareader = com.ExecuteReader();
            DataTable dt = new DataTable();
            dt.Load(datareader);

            com.ExecuteNonQuery();
            Console.WriteLine("Data Deleated");

         
            com.CommandText = ("select * from stu1");

            Console.WriteLine("Detail Of the New Data Of student ");
            foreach (DataColumn colum in dt.Columns)
            {
                Console.WriteLine(string.Format("{0}", colum.ColumnName));
            }
            foreach (DataRow row in dt.Rows)
            {
                Console.WriteLine(string.Format("{0}\t\t{1}", row["ID"], row["Name"]));

            }
            dt.Load(datareader);


                          
        }
        public static void update()
        {
            string connString = "Data Source=ARVIND-KATARIA\\SQLEXPRESS;Initial Catalog=practice;Integrated Security=True";
         string qry = @"select * from stu1 ";
         string upd = @"update stu1 set Name = @Name where ID = @ID";

         SqlConnection conn = new SqlConnection(connString);

         try {
            SqlDataAdapter da = new SqlDataAdapter();
            da.SelectCommand = new SqlCommand(qry, conn);

            DataSet ds = new DataSet();  
            da.Fill(ds, "stu1");

            DataTable dt = ds.Tables["stu1"];

            dt.Rows[0]["Name"] = "W";

            foreach (DataRow row in dt.Rows)
            {
               Console.WriteLine(
                  "{0} ",
                  row["Name"].ToString().PadRight(15));
                 
            }

            // Update employees
            SqlCommand cmd = new SqlCommand(upd, conn);
            cmd.Parameters.Add("@Name",SqlDbType.NVarChar,50, "Name");
            SqlParameter parm = cmd.Parameters.Add("@ID",SqlDbType.Int,4,"ID");
            parm.SourceVersion = DataRowVersion.Original;
            da.UpdateCommand = cmd;
            da.Update(ds, "stu1");
         } catch(Exception e) {
            Console.WriteLine("Error: " + e);
         } finally {
            conn.Close();
         }
      } 



       

        static void Main(string[] args)
        {
            int ch;
            do
            {
                Console.WriteLine("\n ---------- MENU --------------");
                Console.WriteLine("\n 1. INSERT ");
                Console.WriteLine("\n 2. DISPLAY");
                Console.WriteLine("\n 3. DELETE ");
                Console.WriteLine("\n 4. UPDATE ");
                Console.WriteLine("\n 5. EXIT");
                Console.WriteLine("\n ENTER YOUR CHOICE");
                string s = Convert.ToString(Console.ReadLine());
                ch = int.Parse(s);

                if (ch == 1)
                {
                    insert(); 
                }
                else if (ch == 2)
                {
                    display();
                    printrow("ID","Name");
                    printline();
                    Console.ReadKey();
                }
                else if (ch == 3)
                {
                    delete();
                }

                else if (ch == 4)
                {
                    update();
                }
                else if (ch == 5)
                {
                    Console.WriteLine("\n Good Byeeeeeee");
                }
            } while (ch != 4);
        }
 }
BY:- Kataria Arvind...!!!!!!

C# get, set properties

Example.....


 class Arvind
    {

        private int rollno;
        private string name;

        public int setrollno()
        {
            return rollno;
        }
        public void getrollno(int values)
        {
            rollno = values;
        }
        public string getname()
        {
            return name;
        }
       public void setname(string abc)
       {
           name = abc;
       }
      
      
          static void Main(string[] args)
        {
            Arvind example = new Arvind();
            example.rollno = 5; // set { }
            example.name = "arvind";
            Console.WriteLine(example.rollno); // get { }
            Console.WriteLine(example.name);
            Console.ReadLine();
        }
    }

Enumeration Example......

Example......

 class Program
    {
        enum gender
        {
            male,
            female
           
        }
        static void Main(string[] args)
        {
           Console.WriteLine("select the 0 for male and 1 for female");
           gender name = (gender)Int32.Parse(Console.ReadLine());
           if (name == gender.male)
           {
               Console.WriteLine("select male");
               Console.ReadLine();
           }
           else if(name == gender.female)
           {
               Console.WriteLine("select female");
               Console.ReadLine();
           }
         
         
        }
    }

How To Unlock Password of Android Phone And Tablet.?????

How To Unlock Password of Android Phone And Tablet.?
1.First of all Power Off your device.

2.After this just press Up Volume Key and hold it.

3.Now press the power button and hold it.

4.It will start a secret terminal.

5.You can use home button for go up and down.

6.You can use option DELETE ALL USER DATA.

7.It will take some time, and problem is solved.

WARNING :- if you use this trick then the data of your mobile will be lost

*****@RVIND*****

How to Change Windows Login Text

     1) First type in search “regedit”

  

    2) Open this path

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System

3) Then click on  “legalnoticecaption” than  change Your name

 

 
 

    4) Click on “legalnoticetext” than change your field

  

      Restart your computer and enjoy the trick…………..!!!!!!!!!!!!

   **************@rvind Kataria**************

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