SQL Pool Connections

Hi
I have written the following function

public System.Data.SqlClient.SqlDataReader ExcuteReader(string strQuery, string strConnection)
    {
        System.Data.SqlClient.SqlCommand myCommand;
        System.Data.SqlClient.SqlDataReader myReader;
        myCommand = new System.Data.SqlClient.SqlCommand(strQuery, new System.Data.SqlClient.SqlConnection(strConnection));
        myCommand.Connection.Open();
        myReader = myCommand.ExecuteReader();
        return myReader;
    }

to return a datareader for me but right now I am facing the problem that it seems this function isn't closing the connection by itself which is resulting in an error saying "Timeout expired.  The timeout period elapsed prior to
obtaining a connection from the pool.  This may have occurred because
all pooled connections were in use and max pool size was reached" and if I close it manually I will lose the data in the reader

so are there any suggestions of what I should do?

thank you