Thursday, March 1, 2012

Delete selected row in gridview in Asp.Net



************************************************************************

/*Add Stylesheet in your application names StyleSheet.css*/

body {}
.gridView{width:800px;background:#ffffff;border:1px solid #476db6; border-collapse:separate;}
.gridView th{border:0px;background:#a7b7fe;color:#000000;text-align:center;font-size:18px;}
.gridView td{border:0px;padding-left:10px;}
.gridView tr:hover{cursor:pointer; background:#ffff00;}
.gridView tr:last-child:hover{ background:#000;background:#a7b7fe;}
.altRow{background:#d1daff;}
.gridPager{background:#a7b7fe;color:#000000;}
.gridPager table{margin:0px auto;}
.gridPager table td{width:20px;}
.gridPager table span{cursor:pointer;font-weight:bold;color:#1a1ac9;}
.gridPager table a{cursor:pointer;text-decoration:none;color:#000000;}
.gridPager table a:hover{text-decoration:underline;}

************************************************************************

<%@ 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">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Delete selected row in gridview in Asp.Net</title>
    <link href="StyleSheet.css" rel="stylesheet" type="text/css" />
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <%="You are viewing page "+(GridView1.PageIndex+1)+" of "+GridView1.PageCount+" ,row count "+GridView1.Rows.Count %>
        <asp:GridView ID="GridView1"
        runat="server"
        AutoGenerateColumns="false"
        DataKeyNames="Id,Department_id"
        CssClass="gridView"
        AlternatingRowStyle-CssClass="altRow"
        PagerStyle-CssClass="gridPager"
        AllowPaging="true"
        PageSize="15"
        onpageindexchanging="GridView1_PageIndexChanging"
        onrowcancelingedit="GridView1_RowCancelingEdit"
        onrowdeleting="GridView1_RowDeleting"
        onrowediting="GridView1_RowEditing"
        onrowupdating="GridView1_RowUpdating" onrowdatabound="GridView1_RowDataBound">
        <Columns>
        <asp:CommandField EditText="Edit" ButtonType="Link"  ShowEditButton="true"/>
        <asp:TemplateField>
        <HeaderTemplate>
            <asp:Button ID="deleteSelected" runat="server" Text="Delete Selected" OnClick="deleteSelected_Click"/>
        </HeaderTemplate>
            <ItemTemplate>
            <asp:CheckBox ID="chkSelect" runat="server"/>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="Employeename" HeaderText="Employee Name" />
        <asp:BoundField DataField="Salary" HeaderText="Salary" />
        <asp:TemplateField HeaderText="Department Name">
        <ItemTemplate>
        <asp:Literal ID="litDepartment" runat="server" Text='<%#Eval("Department_id") %>'></asp:Literal>
        </ItemTemplate>
        <EditItemTemplate>
        <asp:DropDownList ID="ddlDepartment" runat="server">
        </asp:DropDownList>
        </EditItemTemplate>
        </asp:TemplateField>
        </Columns>

<PagerStyle CssClass="gridPager"></PagerStyle>

<AlternatingRowStyle CssClass="altRow"></AlternatingRowStyle>
        </asp:GridView>
    </div>
    </form>
</body>
</html>
<script type="text/javascript" language="javascript">
    function DeleteConfirmation() {
        if (confirm("Are you sure, you want to delete the selected records ?") == true)
            return true;
        else
            return false;
    }
 </script>

************************************************************************

using System;
using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page
{
    private Employee employee = new Employee();
    private Department department = new Department();
    protected void Page_Load(object sender, EventArgs e)
    {
        GridView1.CellSpacing = -1;
        if (!IsPostBack)
        {
            BindGrid();
        }
    }

    private void BindGrid()
    {
        GridView1.DataSource = employee.ReadAll();
        GridView1.DataBind();
    }
    protected void GridView1_PageIndexChanging(object sender, System.Web.UI.WebControls.GridViewPageEventArgs e)
    {
        GridView1.PageIndex = e.NewPageIndex;
        BindGrid();
    }
    protected void GridView1_RowEditing(object sender, System.Web.UI.WebControls.GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        BindGrid();
    }

    protected void GridView1_RowUpdating(object sender, System.Web.UI.WebControls.GridViewUpdateEventArgs e)
    {
        GridViewRow currentRow = GridView1.Rows[e.RowIndex];
        String dataKey = GridView1.DataKeys[e.RowIndex].Values[0].ToString();
        String employeeName = ((TextBox)currentRow.Cells[2].Controls[0]).Text;
        String salary = ((TextBox)currentRow.Cells[3].Controls[0]).Text;
        String department_id = ((DropDownList)currentRow.FindControl("ddlDepartment")).SelectedValue;
        try
        {
            employee = new Employee();
            employee.Id = Convert.ToInt16(dataKey);
            employee.Employeename = employeeName;
            employee.Salary = Convert.ToDecimal(salary);
            employee.Department_id = Convert.ToInt16(department_id);
            employee.UpdateById(employee);
        }
        catch { }

        GridView1.EditIndex = -1;
        BindGrid();
    }

    protected void GridView1_RowCancelingEdit(object sender, System.Web.UI.WebControls.GridViewCancelEditEventArgs e)
    {
        GridView1.EditIndex = -1;
        BindGrid();
    }

    protected void GridView1_RowDeleting(object sender, System.Web.UI.WebControls.GridViewDeleteEventArgs e)
    {
        String dataKey = GridView1.DataKeys[e.RowIndex].Values[0].ToString();
        employee.DeleteById(dataKey);
        GridView1.EditIndex = -1;
        BindGrid();
    }

    protected void GridView1_RowDataBound(object sender, System.Web.UI.WebControls.GridViewRowEventArgs e)
    {
        GridViewRow currentRow = e.Row;
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            try
            {
                Literal departmentName = (Literal)currentRow.Cells[3].FindControl("litDepartment");
                departmentName.Text = department.ReadAllById(departmentName.Text)[0].Departmentname;
            }
            catch
            {
            }
        }
     
        if (e.Row.RowType == DataControlRowType.DataRow &&
           (e.Row.RowState & DataControlRowState.Edit) == DataControlRowState.Edit)
        {
            String Department_id = GridView1.DataKeys[e.Row.RowIndex].Values[1].ToString();

            DropDownList ddlDepartment = (DropDownList)currentRow.Cells[4].FindControl("ddlDepartment");
            ddlDepartment.DataSource = department.ReadAll();
            ddlDepartment.DataTextField = "Departmentname";
            ddlDepartment.DataValueField = "Id";
            ddlDepartment.DataBind();

            ddlDepartment.SelectedValue = Department_id;
        }
    }


    protected void deleteSelected_Click(object sender, EventArgs e)
    {
        Button deleteselected = (Button)sender;
        deleteselected.OnClientClick = "return DeleteConfirmation();";
        String id = String.Empty;
        employee = new Employee();
        foreach (GridViewRow row in GridView1.Rows)
        {
            CheckBox chkDeleteSelected = (CheckBox)row.FindControl("chkSelect");
            if (chkDeleteSelected.Checked == true)
            {
                id = GridView1.DataKeys[row.RowIndex].Values[0].ToString();
                employee.DeleteById(id);
            }
        }
        BindGrid();
    }
}

************************************************************************ 

using System;
using System.Web.Configuration;
public class Connection
{
public Connection(){}
     /// <summary>
     /// Get Connection string.
     /// <summary>
  public static String Cs
    {
        get
        {
            return WebConfigurationManager.ConnectionStrings["cs"].ConnectionString;
        }
    }
}

************************************************************************ 

#region Namespaces
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
#endregion

/// <summary>
/// class Department
/// </summary>
 public class Department
 {
#region Properties
      private Int32 _Id;
     /// <summary>
     ///Gets or Sets the Int32 value of Id
     /// </summary>
      public Int32 Id { get { return _Id;} set { _Id = value;} }

      private String _Departmentname;
     /// <summary>
     ///Gets or Sets the String value of Departmentname
     /// </summary>
      public String Departmentname { get { return _Departmentname;} set { _Departmentname = value;} }

#endregion

#region Private Meambers
      private SqlCommand cmd;
      private SqlConnection con;
      private SqlDataReader table;
      private String ConnectionString = String.Empty;
#endregion

#region Constructor
     /// <summary>
     ///Default constructor 
     /// </summary>
      public Department()
      {
        ConnectionString=Connection.Cs;
      }

     /// <summary>
     ///Parameterised constructor 
     /// </summary>
      public Department(String connectionString)
      {
        ConnectionString=connectionString;
      }
#endregion

#region Public Methods

     /// <summary>
     /// This meathod returns all records of Department table.
     /// </summary>
     /// <returns> All rows of Department table.</returns>


      public List<Department> ReadAll()
       {
        using(con = new SqlConnection(ConnectionString))
         {
          try
           {
            List<Department> list = new List<Department>();
            if (con.State == ConnectionState.Closed)
            {
             con.Open();
            }
            cmd = new SqlCommand("Select * From [dbo].[Department]",con);
            using(table = cmd.ExecuteReader())
             {
              while (table.Read())
               {
                Department obj = new Department();
                obj._Id = table.GetInt32(0);
                obj._Departmentname = table.GetString(1);
                list.Add(obj);
               }
               return list;
              }
             }
           finally
            {
              if (con.State == ConnectionState.Open)
               {
                con.Close();
               }
            }
         }
      }

     /// <summary>
     /// This meathod returns all records of Department table by column Id.
     /// </summary>
     /// <param name="Id"></param>
     /// <returns>All rows of Department table.</returns>

      public List<Department> ReadAllById(String id)
       {
        using(con = new SqlConnection(ConnectionString))
         {
          try
           {
            List<Department> list = new List<Department>();
            if (con.State == ConnectionState.Closed)
            {
             con.Open();
            }
            cmd = new SqlCommand("Select * From [dbo].[Department] Where [Id]=@ID",con);
            cmd.Parameters.AddWithValue("@Id",id);
            using(table = cmd.ExecuteReader())
             {
              while (table.Read())
               {
                Department obj = new Department();
                obj._Id = table.GetInt32(0);
                obj._Departmentname = table.GetString(1);
                list.Add(obj);
               }
               return list;
              }
             }
           finally
            {
              if (con.State == ConnectionState.Open)
               {
                con.Close();
               }
            }
         }
      }

#endregion

 }

************************************************************************ 

#region Namespaces
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
#endregion

/// <summary>
/// class Employee
/// </summary>
 public class Employee
 {
#region Properties
      private Int32 _Id;
     /// <summary>
     ///Gets or Sets the Int32 value of Id
     /// </summary>
      public Int32 Id { get { return _Id;} set { _Id = value;} }

      private String _Employeename;
     /// <summary>
     ///Gets or Sets the String value of Employeename
     /// </summary>
      public String Employeename { get { return _Employeename;} set { _Employeename = value;} }

      private Decimal _Salary;
     /// <summary>
     ///Gets or Sets the Decimal value of Salary
     /// </summary>
      public Decimal Salary { get { return _Salary;} set { _Salary = value;} }

      private Int32 _Department_id;
     /// <summary>
     ///Gets or Sets the Int32 value of Department_id
     /// </summary>
      public Int32 Department_id { get { return _Department_id;} set { _Department_id = value;} }

#endregion

#region Private Meambers
      private SqlCommand cmd;
      private SqlConnection con;
      private SqlDataReader table;
      private String ConnectionString = String.Empty;
#endregion

#region Constructor
     /// <summary>
     ///Default constructor 
     /// </summary>
      public Employee()
      {
        ConnectionString=Connection.Cs;
      }

     /// <summary>
     ///Parameterised constructor 
     /// </summary>
      public Employee(String connectionString)
      {
        ConnectionString=connectionString;
      }
#endregion

#region Public Methods

     /// <summary>
     /// This meathod returns all records of Employee table.
     /// </summary>
     /// <returns> All rows of Employee table.</returns>


      public List<Employee> ReadAll()
       {
        using(con = new SqlConnection(ConnectionString))
         {
          try
           {
            List<Employee> list = new List<Employee>();
            if (con.State == ConnectionState.Closed)
            {
             con.Open();
            }
            cmd = new SqlCommand("Select Top(1000)* From [dbo].[Employee]",con);
            using(table = cmd.ExecuteReader())
             {
              while (table.Read())
               {
                Employee obj = new Employee();
                obj._Id = table.GetInt32(0);
                obj._Employeename = table.GetString(1);
                obj._Salary = table.GetDecimal(2);
                obj._Department_id = table.GetInt32(3);
                list.Add(obj);
               }
               return list;
              }
             }
           finally
            {
              if (con.State == ConnectionState.Open)
               {
                con.Close();
               }
            }
         }
      }

      /// <summary>
      /// This meathod returns all records of Employee table by column Department_id.
      /// </summary>
      /// <param name="Department_id" ></param>
      /// <returns>All rows of Employee table.</returns>


      public List<Employee> ReadAllEmployeeByDepartment_id(String department_id)
      {
          using (con = new SqlConnection(ConnectionString))
          {
              try
              {
                  List<Employee> list = new List<Employee>();
                  con = new SqlConnection(ConnectionString);
                  if (con.State == ConnectionState.Closed)
                  {
                      con.Open();
                  }
                  cmd = new SqlCommand("Select * From [dbo].[Employee] where [Department_id]=@Department_id", con);
                  cmd.Parameters.AddWithValue("@Department_id", department_id);
                  using (table = cmd.ExecuteReader())
                  {
                      while (table.Read())
                      {
                          Employee obj = new Employee();
                          obj._Id = table.GetInt32(0);
                          obj._Employeename = table.GetString(1);
                          obj._Salary = table.GetDecimal(2);
                          obj._Department_id = table.GetInt32(3);
                          list.Add(obj);
                      }
                      //return (list.Count > 0) ? list : GetEmptyList(list);
                      return list;
                  }
              }
              finally
              {
                  if (con.State == ConnectionState.Open)
                  {
                      con.Close();
                  }
              }
          }
      }

     /// <summary>
     /// This meathod is for updating record in Employee table by column Id.
     /// </summary>
     /// <param name="object of Employee"></param>
     /// <returns>Number of row affected by query.</returns>


      public Int32 UpdateById(Employee obj)
       {
        using(con = new SqlConnection(ConnectionString))
        {
         try
          {
           if (con.State == ConnectionState.Closed)
           {
             con.Open();
           }
           cmd = new SqlCommand("Update [dbo].[Employee] Set [Employeename] = @Employeename,[Salary] = @Salary,[Department_id] = @Department_id Where [Id] =@Id",con);
           cmd.Parameters.AddWithValue("@Employeename",obj._Employeename);
           cmd.Parameters.AddWithValue("@Salary",obj._Salary);
           cmd.Parameters.AddWithValue("@Department_id",obj._Department_id);
           cmd.Parameters.AddWithValue("@Id",obj._Id);
           return cmd.ExecuteNonQuery();
          }
         finally
          {
           if (con.State == ConnectionState.Open)
           {
             con.Close();
           }
           cmd.Parameters.Clear();
          }
        }
       }

     /// <summary>
     /// This meathod is for deleting records in Employee table by column Id.
     /// </summary>
     /// <param name="Id" ></param>
     /// <returns>Number of row affected by query.</returns>


      public Int32 DeleteById(String id)
       {
        using(con = new SqlConnection(ConnectionString))
        {
         try
          {
           if (con.State == ConnectionState.Closed)
           {
             con.Open();
           }
           cmd = new SqlCommand("Delete From [dbo].[Employee] Where [Id] =@Id",con);
           cmd.Parameters.AddWithValue("@Id",id);
           return cmd.ExecuteNonQuery();
          }
         finally
          {
           if (con.State == ConnectionState.Open)
           {
             con.Close();
           }
           cmd.Parameters.Clear();
          }
        }
       }
#endregion

 }

************************************************************************

<connectionStrings>
<add name="cs" connectionString="Data Source=Your Data Source;Initial Catalog=softwarekaffee;Persist Security Info=True;User ID=Your User Id;Password=Your Password"/>
</connectionStrings>

************************************************************************


Go
Create database softwarekaffee

Go
use softwarekaffee

Go
create table Department
(
Id int identity primary key,
DepartmentName nvarchar(30)
)
Insert Into Department Values ('Sales');
Insert Into Department Values ('Production');
Insert Into Department Values ('Purchase');
Insert Into Department Values ('Stock');

Go
create table Employee
(
Id int identity primary key,
EmployeeName nvarchar(30),
Salary decimal(7,2),
Department_Id int references Department(Id)
)

Insert Into Employee Values ('Kaushik',41000,1);
Insert Into Employee Values ('Rahul',25000,2);
Insert Into Employee Values ('Sumit',26000,3);
Insert Into Employee Values ('Ravi',40000,4);
Insert Into Employee Values ('Rajeev',41000,1);
Insert Into Employee Values ('Amit',25000,2);
Insert Into Employee Values ('Gautam',26000,3);
Insert Into Employee Values ('Ranveer',40000,4);
Insert Into Employee Values ('Devendra',40000,4);
Insert Into Employee Values ('Sunil',40000,4);
Insert Into Employee Values ('Manas',41000,1);
Insert Into Employee Values ('Mishri Lal',25000,2);
Insert Into Employee Values ('Avinash',26000,3);
Insert Into Employee Values ('Alok',40000,4);
Insert Into Employee Values ('Pooja',41000,1);
Insert Into Employee Values ('Geeta',25000,2);
Insert Into Employee Values ('Lalita',26000,3);
Insert Into Employee Values ('Meenakshi',40000,4);
Insert Into Employee Values ('Rajendra',40000,4);
Insert Into Employee Values ('Sunita',40000,4);
Insert Into Employee Values ('Sandeep',26000,3);
Insert Into Employee Values ('Vinod',40000,4);
Insert Into Employee Values ('Remo',40000,4);
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