Creating Datasets on the Fly

I need c# code example that will be work for create dataset on the fly 
Thanks

can u please be more specific?? creating datasets on fly... ???

Hi,

Use this code:

DataSet ds = new DataSet();
DataTable dt = new DataTable("Customers");

DataColumn col = dt.Columns.Add("CustID", typeof(Int32));
col.AllowDBNull = false;
col.Unique = true;
dt.Columns.Add("CustName", typeof(String));
dt.Columns.Add("CustStreet1", typeof(String));
dt.Columns.Add("CustStreet2", typeof(String));

ds.Tables.Add(dt);

HTH,
Suprotim Agarwal

Thanks for replay. 
I don't understand why when I run the page nothing on it. It's empty
How I can add data in these cells? I need to work with a virtual data.

Now  code on page
         <asp:GridView ID="GridView1" runat="server"
AutoGenerateColumns="true" Width="77%">
</asp:GridView>
behinde:

protected void Page_Load(object sender, EventArgs e)
{
DataSet ds = new DataSet();
DataTable dt = new DataTable("Customers");
DataColumn col = dt.Columns.Add("CustID", typeof(Int32));
col.AllowDBNull = false;
col.Unique = true;
dt.Columns.Add("CustName", typeof(String));
dt.Columns.Add("CustStreet1", typeof(String));
dt.Columns.Add("CustStreet2", typeof(String));
ds.Tables.Add(dt);
GridView1.DataSource = ds;
GridView1.DataBind(); 

}

Thanks for help :)