Here in this blog we will
see how to first write data from data set into a XML file and then how to read
that XML file data into a Dataset.
To elaborate this we will
use two grids on the page.
Step1:
Create a web page and put
two Button
-
Button to write XML (
named btnImport)
-
Button to read XML (
named btnExport)
and also two grids
-
To show written data
(named grdImport)
-
To show Read data (
named grdExport)
Here is the HTML Code (ReadWriteXML.aspx
page) for the program
<%@
Page Language="C#"
AutoEventWireup="true"
CodeFile="ReadWriteXML.aspx.cs"
Inherits="Pages_ReadWriteXML"
%>
<!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>
<table>
<tr>
<td>
<asp:Button
ID="btnImport"
runat="server"
Text="Write XML"
OnClick="btnImport_Click"
/>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
<asp:GridView
ID="grdImport"
runat="server">
</asp:GridView>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
<asp:Button
ID="btnExport"
runat="server"
Text="Read XML"
OnClick="btnExport_Click"
/>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
<asp:GridView
ID="grdExport"
runat="server">
</asp:GridView>
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
Code for
ReadWriteXML.aspx.cs
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;
using
Database.DAL;
public
partial class
Pages_ReadWriteXML : System.Web.UI.Page
{
Common objCommon =
new Common();
DataSet DS;
protected void Page_Load(object
sender, EventArgs e)
{
}
protected void btnImport_Click(object
sender, EventArgs e)
{
string FileName = "TEST_XML.xml";
string FilePath = Server.MapPath("~/XML_Files/");
using (SqlCommand cmd =
new SqlCommand())
{
cmd.CommandText =
"READ_XML_EMP";
DS =
DBHelper.SqlExecuteAdapter(cmd);
}
objCommon.Write_XML(DS, FileName, FilePath);
grdImport.DataSource
= DS;
grdImport.DataBind();
}
protected void btnExport_Click(object
sender, EventArgs e)
{
string FileName = "TEST_XML.xml";
string FilePath = Server.MapPath("~/XML_Files/");
DS =
objCommon.Read_XML(FileName, FilePath);
grdExport.DataSource
= DS;
grdExport.DataBind();
}
}
DBHelper Class
using
System;
using
System.Data.SqlClient;
using
System.Data;
using
System.Security.Cryptography;
using
System.IO;
using
System.Web;
using
System.Web.UI;
namespace
Database.DAL
{
///
<summary>
/// Summary description
for SqlHelper
///
</summary>
public class
DBHelper
{
private DBHelper()
{
//
// TODO: Add constructor logic here
//
}
#region
Connection String
//Pick connection string from
web.config
/*
which could be:
<connectionStrings>
<add name="Connection" connectionString="Data Source=TESTSQL;Initial Catalog=TESTDB;uid=sa;
pwd=TEST123;Connect Timeout=400;pooling='true'; MaxPool Size=100;" providerName="System.Data.SqlClient;"/>
</connectionStrings>
*/
private static
string conn =
System.Configuration.ConfigurationManager.ConnectionStrings["Connection"].ToString();
#endregion
#region
Execute Adapter
public static
DataSet SqlExecuteAdapter(SqlCommand cmd)
{
DataSet ds =
new DataSet();
cmd.CommandType =
CommandType.StoredProcedure;
using (SqlConnection con =
new SqlConnection(conn))
{
cmd.Connection = con;
con.Open();
SqlDataAdapter adapt = new SqlDataAdapter(cmd);
adapt.Fill(ds);
con.Close();
}
return ds;
}
#endregion
}
}
Common
class
using
System;
using
System.Data;
using
System.Configuration;
using
System.Collections;
using
System.Web;
using
System.Web.Security;
using
System.Web.UI;
using
System.Web.UI.WebControls;
using
System.Web.UI.WebControls.WebParts;
using
System.Web.UI.HtmlControls;
using
System.Data.SqlClient;
using
Database.DAL;
using
System.Xml;
using
System.Xml.Serialization;
using
System.IO;
namespace
Database.DAL
{
public class
Common
{
public Common()
{
//
// TODO: Add constructor logic here
//
}
#region
READ WRITE XML
public void
Write_XML(DataSet DS, string FileName,
string FilePath)
{
StreamWriter
XMLFile = new StreamWriter(FilePath + FileName,
false);
DS.WriteXml(XMLFile);
XMLFile.Close();
}
public DataSet Read_XML(string
FileName, string FilePath)
{
DataSet DS =
new DataSet();
DS.ReadXml(FilePath + FileName);
return DS;
}
#endregion
}
}
DB
Structure
TEST_XML
table
![Image1.jpg]()
INSERT VALUES IN TABLE LIKE
![Image2.jpg]()
READ_XML_EMP PROCEDUER
USE
[TESTDB]
GO
/******
Object: StoredProcedure [dbo].[READ_XML_EMP] Script Date: 07/11/2013
17:11:26 ******/
SET
ANSI_NULLS
ON
GO
SET
QUOTED_IDENTIFIER
ON
GO
CREATE
PROC [dbo].[READ_XML_EMP]
AS
BEGIN
SELECT
* FROM TEST_XML
END
GO
FIRST CLICK ON WRITE XML
Button to Write Data INTO XML File
Output will
be:
![Image3.jpg]()
Click on Export button to
read data from XML file
Output Will
be:
![Image4.jpg]()