Here CustomerData contains one Table called Customerinfo which has three Columns
ID
Name
Age
And Currently the Table has 2 records.
//—————————–
Now to Read the XML File we will use DataSet ReadXML Property.

Consider that the file Customers.XML is stored in C:\
DataSet ds = new DataSet();
ds.ReadXml(“C:\\Customers.XML”) ;

After this is done you can bind your DataSet to any data bound controls like
GridView, DataGrid, Repeater, DropDownList and many others using their
DataSource Property.

Example
DataSet ds = new DataSet();

ds.ReadXml(“C:\\Customers.XML”) ;
GridView1.DataSource = ds;
GridView1.DataBind();
//————————–
To Add New Rows To your XML File you can use the DataSet WriteXML Property

DataSet ds = new DataSet();
ds.WriteXML() ;

Example
ds.Tables[0].Rows.Add();
ds.Tables[0].Rows[ds.Tables[0].Rows.Count – 1]["Name"] = “Ponting”;
ds.Tables[0].Rows[ds.Tables[0].Rows.Count – 1]["Age"] = “33″;
ds.Tables[0].AcceptChanges();
ds.WriteXml(“C:\\Customers.XML”);

//———————————-
To Search for An Existing Record and Update the Record,
you will have to Query the DataSet in the following way.
DataRow[] dr = ds.Tables[0].Select(“Name = ‘abraham’”);
if (dr!=null && dr.Length > 0)
{
dr[0]["Age"] = “25″;
}
ds.Tables[0].AcceptChanges();
//———————————-
To Delete a Particular Record.

DataRow[] dr = ds.Tables[0].Select(“Name = ‘Ponting’”);
if (dr!=null && dr.Length > 0)
{
ds.Tables[0].Rows.Remove(dr[0]);
}
ds.Tables[0].AcceptChanges();

To solve this problem do this:

1. Reregister ASP.NET for IIS:  Open an Visual Studio Command Prompt (or a regular command prompt and cd into the .Net dir – usually: C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727) then type:
   aspnet_regiis -i
2. When complete, from the same command prompt run: iisreset

Verify your IIS virtual/app dir is setup correctly (uses .Net 2).  If you don’t already have one…

To Host a WCF Service within IIS:

1. Develop your service in IIS (I’m not going to tell you how to do that!) and build it.
2. Within your computer management/MMC console (compmgmt.msc), open the Internet Information Service node and right click on the site you want to use and select New – Virtual Directory…
3. Enter the name you want.
4. Point this to the directory you created your WCF service project in (the project root dir – not the bin dir).
5. Complete the wizard then back in the MMC window right click on your new virtual dir and select Properties.
6. On the ASP.NET tab make sure uses version 2.0.50727 (or whatever your v2 is).

To test:  within the MMC console – open your new virtual dir, right click on one of your services (eg MyService.svc) and select Browse.

kanani Manish