use
SQL Joins [
^] and create one one sql statement to return final data using multiple tables. then you can run that sql statement and fetch data on one request. for example you can join first two database calls as below
string sql = @"SELECT g1.Bcode, g1.Bdesc,g2.Bndesc
FROM Gl_bSheet1 g1
JOIN Gl_bSheet2 on g1.Bcode = g2.Bcode
where g1.Compcode='" + baranchcode + "' and g2.Compcode='" + baranchcode + "'";