LINQ

Insert and Update Data With LINQ Using XSD

Introduction

Question: What is insert data with LINQ using XSD?

In simple terms "It enables insertion of data using XSD with LINQ queries".

Step 1: Create a new webform project, as in:

Output1.png

Step 2: Add a new XSD dataset item, as in:

Output2.png

Step 3: Add a new employee table to dataset, as in:

Output3.png

Step 4: The complete code of webform1.aspx looks like this:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="LINQtoXSDInsertApp.WebForm1" %> 
<!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 id="Head1" runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <center>
            <table>
                <tr>
                    <td>
                        <asp:Label ID="Label1" runat="server" Text="Insert Data with LINQ using XSD (DataSet)"
                            Font-Bold="true"></asp:Label>
                    </td>
                </tr>
                <tr>
                    <td align="center">
                        <asp:GridView ID="GridView1" runat="server" BackColor="#CCCCCC" BorderColor="#999999"
                            BorderStyle="Solid" BorderWidth="3px" CellPadding="4" CellSpacing="2" ForeColor="Black"
                            OnLoad="Page_Load">
                            <FooterStyle BackColor="#CCCCCC" />
                            <HeaderStyle BackColor="Black" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="#CCCCCC" ForeColor="Black" HorizontalAlign="Left" />
                            <RowStyle BackColor="White" />
                            <SelectedRowStyle BackColor="#000099" Font-Bold="True" ForeColor="White" />
                            <SortedAscendingCellStyle BackColor="#F1F1F1" />
                            <SortedAscendingHeaderStyle BackColor="#808080" />
                            <SortedDescendingCellStyle BackColor="#CAC9C9" />
                            <SortedDescendingHeaderStyle BackColor="#383838" />
                        </asp:GridView>
                    </td>
                </tr>
            </table>
            <br />
            <br />
            <table>
                <tr>
                    <td>
                        <asp:Label ID="Label2" runat="server" Text="Please Enter FirstName: " ForeColor="Brown"
                            Font-Bold="true" Font-Italic="true"></asp:Label>
                    </td>
                    <td>
                        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td>
                        <asp:Label ID="Label3" runat="server" Text="Please Enter LastName: " ForeColor="Brown"
                            Font-Bold="true" Font-Italic="true"></asp:Label>
                    </td>
                    <td>
                        <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td>
                        <asp:Label ID="Label4" runat="server" Text="Please Enter Age: " ForeColor="Brown"
                            Font-Bold="true" Font-Italic="true"></asp:Label>
                    </td>
                    <td>
                        <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td colspan="2">
                        <asp:Button ID="Button1" runat="server" Text="Insert Data" OnClick="Button1_Click"
                            BackColor="Orange" Font-Bold="true" /><br />
                        <br /> 
                   </td>
                </tr>
            </table>
            <br />
            <br />
            <table>
                <tr>
                    <td colspan="3">
                        <asp:Label ID="Label5" runat="server" ForeColor="Red" Font-Bold="true"></asp:Label>
                    </td>
                </tr>
            </table>
        </center>
    </div>
    </form>
</body>
</html>

Step 5: The complete code of webform1.aspx.cs looks like this:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace LINQtoXSDInsertApp
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
        }
        protected void Button1_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(TextBox1.Text) || string.IsNullOrEmpty(TextBox2.Text)
                || string.IsNullOrEmpty(TextBox3.Text))
            {
                Label5.Text = "Please Enter Some Values";
                Label5.ForeColor = System.Drawing.Color.Red;
            }
            else
            {
                objAdapter.Insert(TextBox1.Text, TextBox2.Text, int.Parse(TextBox3.Text));
                EmployeeDS.EmployeeDataTable objEmployeeTable = objAdapter.GetData();
                var query = from r in objEmployeeTable select new
                {
                    FirstName = r.FirstName, LastName = r.LastName, Age = r.Age };
                GridView1.DataSource = query;
                GridView1.DataBind();
                Label5.Text = "Records Inserted Successfully";
                Label5.ForeColor = System.Drawing.Color.Green;
                TextBox1.Text = string.Empty;
                TextBox2.Text = string.Empty;
                TextBox3.Text = string.Empty;
            }
        }
        #region Instance MembersEmployeeDSTableAdapters.EmployeeTableAdapter
        objAdapter = new EmployeeDSTableAdapters.EmployeeTableAdapter();
        #endregion
    }
}

Step 6: The output of the application looks like this:

Output4.png

Step 7: The data inserted output of the application looks like this:

Output5.png

Question: What is update data with LINQ using XSD?

In simple terms "It enables the update of data using XSD with LINQ queries".

Step 1: Create a new webform project.

Step 2: Add a new XSD dataset item.

Step 3: Add a new employee table to dataset, as in:

Output3 (1).png

Step 4: The complete code of webform1.aspx looks like this:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="LINQtoXSDUpdateApp.WebForm1" %> 
<!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 id="Head1" runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <center>
            <table>
                <tr>
                    <td>
                        <asp:Label ID="Label1" runat="server" Text="Update with LINQ using WCF" Font-Bold="true"></asp:Label>
                    </td>
                </tr>
                <tr>
                    <td>
                        <asp:GridView ID="GridView1" runat="server" BackColor="#CCCCCC" BorderColor="#999999"
                            BorderStyle="Solid" BorderWidth="3px" CellPadding="4" CellSpacing="2" ForeColor="Black"
                            OnLoad="Page_Load">
                            <FooterStyle BackColor="#CCCCCC" />
                            <HeaderStyle BackColor="Black" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="#CCCCCC" ForeColor="Black" HorizontalAlign="Left" />
                            <RowStyle BackColor="White" />
                            <SelectedRowStyle BackColor="#000099" Font-Bold="True" ForeColor="White" />
                            <SortedAscendingCellStyle BackColor="#F1F1F1" />
                            <SortedAscendingHeaderStyle BackColor="#808080" />
                            <SortedDescendingCellStyle BackColor="#CAC9C9" />
                            <SortedDescendingHeaderStyle BackColor="#383838" />
                        </asp:GridView>
                    </td>
                </tr>
            </table>
            <br />
            <br />
            <table>
                <tr>
                    <td>
                        <asp:Label ID="Label6" runat="server" Text="Please Enter Id: " ForeColor="Brown"
                            Font-Bold="true" Font-Italic="true"></asp:Label>
                    </td>
                    <td>
                        <asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td>
                        <asp:Label ID="Label2" runat="server" Text="Please Enter FirstName: " ForeColor="Brown"
                            Font-Bold="true" Font-Italic="true"></asp:Label>
                    </td>
                    <td>
                        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td>
                        <asp:Label ID="Label3" runat="server" Text="Please Enter LastName: " ForeColor="Brown"
                            Font-Bold="true" Font-Italic="true"></asp:Label>
                    </td>
                    <td>
                        <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td>
                        <asp:Label ID="Label4" runat="server" Text="Please Enter Age: " ForeColor="Brown"
                            Font-Bold="true" Font-Italic="true"></asp:Label>
                    </td>
                    <td>
                        <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td colspan="2">
                        <asp:Button ID="Button1" runat="server" Text="Update Data" OnClick="Button1_Click"
                            BackColor="Orange" Font-Bold="true" /><br />
                        <br />
                    </td>
                </tr>
            </table>
            <br />
            <br />
            <table>
                <tr>
                    <td colspan="3">
                        <asp:Label ID="Label5" runat="server" ForeColor="Red" Font-Bold="true"></asp:Label>
                    </td>
                </tr>
            </table>
        </center>
    </div>
    </form>
</body>
</html>

Step 5: The complete code of webform1.aspx.cs looks like this:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace LINQtoXSDUpdateApp
{   
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
        }
        protected void Button1_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(TextBox4.Text) || string.IsNullOrEmpty(TextBox1.Text)
                || string.IsNullOrEmpty(TextBox2.Text) || string.IsNullOrEmpty(TextBox3.Text))
            {
                Label5.Text = "Please Enter Some Values";
                Label5.ForeColor = System.Drawing.Color.Red;
            }
            else
            {
                objAdapter.Update(TextBox1.Text, TextBox2.Text, int.Parse(TextBox3.Text), int.Parse(TextBox4.Text));
                EmployeeDS.EmployeeDataTable objEmployeeTable = objAdapter.GetData();
                var query = from r in objEmployeeTable select new
                {
                    FirstName = r.FirstName, LastName = r.LastName, Age = r.Age };
                GridView1.DataSource = query;
                GridView1.DataBind();
                Label5.Text = "Records Updated Successfully";
                Label5.ForeColor = System.Drawing.Color.Green;
                TextBox1.Text = string.Empty;
                TextBox2.Text = string.Empty;
                TextBox3.Text = string.Empty;
                TextBox4.Text = string.Empty;
            }
        }
        #region Instance MembersEmployeeDSTableAdapters.EmployeeTableAdapter
        objAdapter = new EmployeeDSTableAdapters.EmployeeTableAdapter();
        #endregion
    }
}

Step 6: The output of the application looks like this:

Output4 (1).png

Step 7: The data updated output of the application looks like this:

Output5 (1).png

I hope this article is useful for you. I look forward for your comments and feedback. Thanks Vijay Prativadi

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