How to create dataset in ASP.NET3.5

Hi All,

I couldn' t create dataset in ASP.NET 3.5 Using the following code....

using System.Data.SqlClient;


protected void Button4_Click1(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(" Data Source =RAM;Initial Catalog = master;User ID=sa;Password=krish");
con.Open();
SqlCommand cmd = new SqlCommand("select * from emp", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
}

There is no intelligence option for dataset.....

T.RAM KUMAR