Question

I have made connection string in web.config file.

<connectionStrings>
  <add name="Test_registration" 
     connectionString="Data Source=DOTNET\SA;Initial Catalog=Test2009;User ID=trainee;Password=trainee123" 
     providerName="System.Data.SqlClient"/>
</connectionStrings>

And in CS file make a constructor for opening a connection.

public main_connection()
{
    sql_conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["Test_registration"].ConnectionString);
    sql.conn.open();
}

But I am getting connection pooling error at runtime of the program on server.

Can anyone tell me where I should close the connection? In web.config file of my project cs file where i open the connection?

I want to write that close() statement only one time as I start the connection only one time.

Answer 1

set connection string here.

then use following code. ( sql_conn is the name of connection object)

try { sql_conn.Open(); }
            catch (Exception)
            {
                if (sql_conn.State != ConnectionState.Closed)
                {
                    sql_conn.Close();
                    sql_conn.Open();
                }
            }