Error: Connection string already added

Server Error in '/BabuTest' Application.


Configuration Error Description: An error occurred during the processing of a configuration file required to service this request.
Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: The entry 'SiteSqlServer' has already been added.

Source Error:





Line 23:       providerName="System.Data.SqlClient" />-->
Line 24:   <!-- Connection String for SQL Server 2000/2005-->
Line 25:  <add name="ConnectionString" connectionString="Server=(local);
Database=babu
uid=sa;pwd=sa12345678;" providerName="System.Data.SqlClient"/>
Line 26:  </connectionStrings>
Line 27:  <appSettings>

Source File: c:\inetpub\wwwroot\dnntest\web.config    Line: 25




Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42 
 
This is the config error i get.  Has anyone experienced this problem?
 
// Moderator edit to reduce scroll

How to solve the Issue

The common cause for the error is the connecting string name
name="ConnectionString" already is present in
the machine.config file.

It is default in the machine.config file.

The best way of giving the name of the connection string is
project Name + ConnString

Or if the problem still exists.

<connectionstrings>
    <clear>
    <!-- OR -->
    <remove name="SiteSqlServer">
    <add name="SiteSqlServer" connectionstring="..." 
providername="System.Data.SqlClient"></add>
  </connectionstrings>