Categories:-aspdotnet interview question and answer , create wcf restful web service in asp.net
Introduction :-
Here i am explain how i can retrieve data from XML file in asp.net. show the data of XML file on the web form.
Description :-
XML stands for Extensible Markup Language.XML is a markup language much like HTML. Using xml we can store the data and we can easily retrieve and display the data without using database in our application.Using XML no need to connect any database. If we want to display data dynamically then we use the XML file.On the XML file we can Perform the read write and update operation .
Now i will explain how i can read data from xml in asp.net.
Design your aspx page as show below
In the above aspx page design i have taken a one textobx and on button .Textbox use for insert the Employee id which present in xml file and press submit button get the detail related to this employee id.
code behind file as show below
Introduction :-
Here i am explain how i can retrieve data from XML file in asp.net. show the data of XML file on the web form.
Description :-
XML stands for Extensible Markup Language.XML is a markup language much like HTML. Using xml we can store the data and we can easily retrieve and display the data without using database in our application.Using XML no need to connect any database. If we want to display data dynamically then we use the XML file.On the XML file we can Perform the read write and update operation .
Now i will explain how i can read data from xml in asp.net.
Design your aspx page as show below
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="xmlpageread.aspx.cs" Inherits="xml_file_xmlpageread" %>
<!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>
<style type="text/css">
.style1 {
text-align: center;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div class="style1">
Enter ID
<asp:TextBox ID="txt_id" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Submit" />
<br />
<br />
<br />
</div>
</form>
</body>
</html>
<!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>
<style type="text/css">
.style1 {
text-align: center;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div class="style1">
Enter ID
<asp:TextBox ID="txt_id" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Submit" />
<br />
<br />
<br />
</div>
</form>
</body>
</html>
In the above aspx page design i have taken a one textobx and on button .Textbox use for insert the Employee id which present in xml file and press submit button get the detail related to this employee id.
code behind file as show below
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml;
public partial class xml_file_xmlpageread : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
try
{
string empid1 = txt_id.Text.ToString();
if (empid1 != null)
{
//Response.Write("<br>XML file searching using asp.net<br><br>");
XmlDocument doc = new XmlDocument();
string xmlFile = System.Web.HttpContext.Current.Server.MapPath("~/XMLFile.xml");
doc.Load(xmlFile);
int empid = int.Parse(empid1);// convert the empid1 to int
XmlNodeList xmlnode = doc.GetElementsByTagName("blockid"); //this is tag of xml file
for (int i = 0; i < xmlnode.Count; i++)
{
XmlAttributeCollection xmlattrc = xmlnode[i].Attributes;
if (int.Parse(xmlattrc[0].Value) == empid)
{
Response.Write("<br>Employee-ID: " + xmlattrc[0].Value);
Response.Write("<br>First Name: " + xmlnode[i].ChildNodes[0].InnerText);
Response.Write("<br>");
}
}
}
}
catch (Exception exp)
{
}
}
}
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml;
public partial class xml_file_xmlpageread : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
try
{
string empid1 = txt_id.Text.ToString();
if (empid1 != null)
{
//Response.Write("<br>XML file searching using asp.net<br><br>");
XmlDocument doc = new XmlDocument();
string xmlFile = System.Web.HttpContext.Current.Server.MapPath("~/XMLFile.xml");
doc.Load(xmlFile);
int empid = int.Parse(empid1);// convert the empid1 to int
XmlNodeList xmlnode = doc.GetElementsByTagName("blockid"); //this is tag of xml file
for (int i = 0; i < xmlnode.Count; i++)
{
XmlAttributeCollection xmlattrc = xmlnode[i].Attributes;
if (int.Parse(xmlattrc[0].Value) == empid)
{
Response.Write("<br>Employee-ID: " + xmlattrc[0].Value);
Response.Write("<br>First Name: " + xmlnode[i].ChildNodes[0].InnerText);
Response.Write("<br>");
}
}
}
}
catch (Exception exp)
{
}
}
}
Xml Form at run time as show below
figure
Download sample code attached
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