Code Master: Select,Insert,Update,Delete Using LINQ in ASP.NET

Default.aspx(Design):

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

<!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></title>
</head>
<body>
<form id="form1" runat="server">
<div>

<asp:Button ID="Button1" runat="server" Text="Show" onclick="Button1_Click" />    <asp:Button
ID="BtnUpdate" runat="server" Text="Update" onclick="BtnUpdate_Click" />    <asp:Button
ID="BtnDelete" runat="server" Text="Delete" onclick="BtnDelete_Click" />    <asp:Button
ID="BtnInsert" runat="server" Text="Insert" onclick="BtnInsert_Click" />
<asp:GridView ID="GridView1" runat="server" BackColor="White"
BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="4"
ForeColor="Black" GridLines="Horizontal" Width="443px">
<FooterStyle BackColor="#CCCC99" ForeColor="Black" />
<HeaderStyle BackColor="#333333" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="White" ForeColor="Black" HorizontalAlign="Right" />
<SelectedRowStyle BackColor="#CC3333" Font-Bold="True" ForeColor="White" />
<SortedAscendingCellStyle BackColor="#F7F7F7" />
<SortedAscendingHeaderStyle BackColor="#4B4B4B" />
<SortedDescendingCellStyle BackColor="#E5E5E5" />
<SortedDescendingHeaderStyle BackColor="#242121" />
</asp:GridView>

</div>
</form>
</body>
</html>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

public partial class Default2 : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Button1_Click(object sender, EventArgs e)

{

DataClassesDataContext DC = new DataClassesDataContext();

var items = from product in DC.PRODUCTMASTs where product.CatagoryID == 1 select product;

GridView1.DataSource = items;

GridView1.DataBind();

}

protected void BtnUpdate_Click(object sender, EventArgs e)

{

DataClassesDataContext dc = new DataClassesDataContext();

PRODUCTMAST prod = dc.PRODUCTMASTs.Single(p => p.ProductID == 1);

prod.ProductName = "Sanjay";

prod.UnitPrice = 500.50M;

dc.SubmitChanges();

}

protected void BtnInsert_Click(object sender, EventArgs e)

{

DataClassesDataContext dc = new DataClassesDataContext();

CATAGORYMAST ct = new CATAGORYMAST();

ct.CatagoryID = 4;

ct.CatagoryName = "OFFICE STATIONARY";

ct.Description = "STATIONARY";

dc.CATAGORYMASTs.InsertOnSubmit(ct);

//PRODUCTMAST P1 = new PRODUCTMAST();

//P1.ProductID = 12;

//P1.ProductName = "PEN";

//P1.CatagoryID = 4;

//P1.UnitPrice = 10.00M;

//PRODUCTMAST P2 = new PRODUCTMAST();

//P1.ProductID = 13;

//P1.ProductName = "OFFICE PAD";

//P1.CatagoryID = 4;

//P1.UnitPrice = 50.00M;

//ct.PRODUCTMASTs.Add(P1);

//ct.PRODUCTMASTs.Add(P2);

//dc.CATAGORYMASTs.

dc.SubmitChanges();

}

protected void BtnDelete_Click(object sender, EventArgs e)

{

DataClassesDataContext dc = new DataClassesDataContext();

//PRODUCTMAST pp=new PRODUCTMAST();

var del = from cc in dc.PRODUCTMASTs where cc.ProductID == 11 select cc;

foreach (var dd in del)

{

dc.PRODUCTMASTs.DeleteOnSubmit(dd);

}

dc.SubmitChanges();

}

Code Master

Wednesday, 28 December 2011

Select,Insert,Update,Delete Using LINQ in ASP.NET

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