I have a project in which the connection string is defined a

Question

I have a desktop project in which i have sql server and visual studio 2010 

in my app.config i have the connection string defined as

<connectionStrings>

<add name="DMS_2008_Data.Properties.Settings.Default.DataConnection"

connectionString="Data Source=ASPKCO-DANISH\SQLEXPRESS1;Initial Catalog=DMS2008;Integrated Security=True;Connect Timeout=300;MultipleActiveResultSets=True"

providerName="System.Data.SqlClient" />

<!--<add name="DBPortal" connectionString="Data Source=ASPKCO-DANISH\SQLEXPRESS1;Initial Catalog=DMS2008;Integrated Security=True;Connect Timeout=30"

providerName="System.Data.SqlClient"/>-->

<add name="DMS2008_DataLayer.Properties.Settings.DataConnection"

connectionString="Data Source=ASPKCO-DANISH\SQLEXPRESS1;Initial Catalog=DMS2008;Integrated Security=True;Connect Timeout=30"

providerName="System.Data.SqlClient" />

</connectionStrings>

 

and in code i am accessing it with below line

 

_objdocumentheader = null;

con = new SqlConnection(DMS_2008_Data.Properties.Settings.Default.DataConnection.ToString());

con.Open();

but it gives an error saying a network or instance specific error

 

please assists