Unable to find connection 'MyConnection' for object MySetting

Question

I have a connection string in my App.Config for Visual Studio 2012 Express for Desktop.
The App.Config and Connection String  like following,
It was working to connect,
Suddenly, I got 'unable to find connection 'MyConnectionString' for Object MySetting, The Connection string could not be found, or data provider associated with Connection String could not be loaded' when I tried to config query on for Data Adapter on DataSet.xsd
files.
Any suggestions is appreciated,
Regards,
Souris,
<?xml version="1.0"?>
<configuration>
    <configSections>
    </configSections>
    <connectionStrings>
    <add name="MyProject.My.MySettings.MyConnectionString" connectionString="Data Source=MyServer;Initial Catalog=MyDatabase;User ID=MyUser;Password=MyPassword;encrypt=true;"/>
    </connectionStrings>
      <startup>
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
    </startup>
</configuration>

Answer 1

Keith, I can already access the hidden status page, what it is NOT showing me, is the duration of my active connection which is what I need to see.
That status page just shows me the following stats:
Configured
Current
Line Status
SHOWTIME
Link Type
Fast Path
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Data Rate:
Stream Type
Actual Data Rate
Up Stream
288 (Kbps.)
Down Stream
2272 (Kbps.)
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Operation Data / Defect Indication:
Operation Data
Operation Data
Upstream
Downstream
Noise Margin
27 dB
28 dB
Attenuation
40 dB
--- dB
Defect Indication
Indicator Name
Near End Indicator
Far End Indicator
Fast Path FEC Correction
0
0
Interleaved Path FEC Correc
0
0
Fast Path CRC Error
2
0
Interleaved Path CRC Error
0
0
Loss of Signal Defect
0
0
Fast Path HEC Error
0
0
Interleaved Path HEC Error
0
0
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Statistics:
Received Cells
2838470
Transmitted Cells
2336236