In this article, I would like to discuss about "Sports results" on your Mobile phone. When we are away from home or away from our computer, everyone curious to know about the Sports results.
Description
In this example, I am just using text file as a dynamic data source, so we have to update the text file periodically.
The whole concept of File Manipulation in ASP.NET revolves around the System.IO namespace. This namespace has the classes required for reading and writing file manipulations.
we need to have the namespace "System.IO" in our ASP.NET page for file manipulations. The first step is to import this namespace as follows:
<%@ Import Namespace="System.IO" %>
Reading the content from the text file
Reading the content from the file is very much similar to writing into file. For File reading we need to use StreamReader class.
In Stream Reader class one method called "Readline" used for reading line by line data.
The following example shows updated sports results:
Source Code
//Source Code Starts
<%@ Import Namespace="System.IO" %>
<%@ Page inherits="System.Web.UI.MobileControls.MobilePage"Language="cs" %>
<%@ Register TagPrefix="mobile"Namespace="System.Web.UI.MobileControls"Assembly="System.Web.Mobile"%>
<scripts runat="server" ID="Scripts1">
public void List_ClickEventHandler(Object source, ListCommandEventArgs e)
{
String sportstr;
switch (e.ListItem.Value)
{
case "cricket":
sportstr="c:/sports/cricket.txt";
break;
case "tennis":
sportstr="c:/sports/tennis.txt";
break;
case "basketball":
sportstr="c:/sports/basketball.txt";
break;
case "olympics":
sportstr="c:/sports/olympics.txt";
break;
case "boxing":
sportstr="c:/sports/boxing.txt";
break;
case "swimming":
sportstr="c:/sports/swimming.txt";
break;
case "athletics":
sportstr="c:/sports/athletics.txt";
break;
default:
//code here
break;
}
StreamReader reader=File.OpenText(sportstr);
string output="";
string sportsresult="";
while((output=reader.ReadLine()) !=null)
{
sportsresult = sportsresult + output;
}
reader.Close();
SportsLabel.Text = sportsresult;
ActiveForm = Sports;
}
</scripts>
//List of Sports
<mobile:Form runat="server" ID="Form1">
<mobile:Label runat="server" ID="Label1">Select a Sport</mobile:Label>
<mobile:List runat="server" id="Sportslist"
OnItemCommand="List_ClickEventHandler" >
<item Text="Cricket" Value="cricket" />
<item Text="Tennis" Value="tennis" />
<item Text="Basketball" Value="basketball" />
<item Text="Winter Olympics" Value="olympics" />
<item Text="Boxing" Value="boxing" />
<item Text="Swimming" Value="swimming" />
<item Text="Athletics" Value="athletics" />
</mobile:List>
</mobile:Form>
<mobile:Form id="Sports" runat = "server">
<mobile:Label runat="server" id="SportsLabel"/>
</mobile:Form>
//Source Code End