Question

I have more than one user control on my aspx page, and each user control call it’s own service or method to display content retrieved from SQL DB. I want to reduce these round trips, and get the job done in one call. Any idea what’s the best practice.

Answer 1

You can put your all select statements in one stored procedure that mean you will hit your database just one time and load the result into a DataSet using SqlAdapter.Fill(MyDataSet) and pass the each table in your dataset to corresponding user control by creating public property with DataTable type

public class UserControl_1
{
   private DataTable _dbTable;
   public DataTable dbTable;
   {
      get
      {
          return _dbTable;
      }
      set
      {
         _dbTable = value
      }
   }
}

in your page

Private DataSet myDataSet;
public void Page_Load(Object sender,EventArgs e)
{
   myDataSet = PopulateData(); // call your stored procedure inside it
   UserControl_1.dbTable = myDataSet.Tables[0];
   UserControl_2.dbTable = myDataSet.Tables[1];

   //... and so on
}

I wish that give you a good idea