How do I fully dynamic GridPanel from server side?

[hakanertug]

This is my GridPanel:

<ext:GridPanel runat="server" ID="GridPanel1">
</ext:GridPanel>

This is my server side codes:

Store s = new Store();
Ext.Net.Model m = new Ext.Net.Model();

GridPanel1.Store.Add(s);
m.Fields.Add("Column0");

Column cb0 = new Column();
cb0.Text = "";
cb0.DataIndex = "Column0";
GridPanel1.AddColumn(cb0);

List<object[]> rows = new List<object[]>();

foreach (var v in List<T>)
{
     m.Fields.Add("Column" + v.Id);

     Column cb = new Column();
     cb.Text = v.name;
     cb.MinWidth = 150;
     cb.DataIndex = "Column" + v.Id;
     GridPane1.AddColumn(cb);

     rows.Add(new object[] { v.name, "", "", "" });
}
s.Model.Add(m);

s.DataSource = rows;
s.DataBind();

Problem:
consists of columns
but does not rows and values​​

Information comes from the database
variable number of rows and number of columns

I want to do the attached picture.

Thank you...