i m getting an error while adding service reference ,as i created new project as u suggested

There was an error downloading 'http://localhost:2021/Service1.svc'.
The request failed with the error message:
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<title>Parser Error

body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;}
p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px}
b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px}
H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red }
H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon }
pre {font-family:"Lucida Console";font-size: .9em}
.marker {font-weight: bold; color: black;text-decoration: none;}
.version {color: gray;}
.error {margin-bottom: 10px;}
.expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; }

Server Error in '/' Application.

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Parser Error

Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.




Parser Error Message: The ServiceHost directive must specify either the 'Factory' or the 'Service' attribute.



Source Error:

<pre> <font color=red>Line 1: <%@ ServiceHost Language="C#" Debug="true" CodeBehind="Service1.svc.cs" %> </font></pre>

Source File: /Service1.svc    Line: 1

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Version Information: Microsoft .NET Framework Version:2.0.50727.4952; ASP.NET Version:2.0.50727.4927






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Metadata contains a reference that cannot be resolved: 'http://localhost:2021/Service1.svc'.
The server did not provide a meaningful reply; this might be caused by a contract mismatch, a premature session shutdown or an internal server error.
If the service is defined in the current solution, try building the solution and adding the service reference again.