Dynamic Gridview

using System;
using System.Linq;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace DynamicGridView
{
  public partial class DynamicGrid : Page
  {
    protected void Page_Load(object sender, EventArgs e)
    {
      var data = Enumerable.Range(1, 100).Select(x => new { ID = "id" + x, Data = x }).ToList();

      var gw = new GridView { DataKeyNames = new string[] { "ID" }, AutoGenerateColumns = false };

      var dataField = new BoundField { DataField = "Data", HeaderText = "Data" };

      var t = new TemplateField();

      var tf = new MyTemplate(x =>
      {
        ScriptManager.RegisterStartupScript(this, this.GetType(), "key", string.Format("alert('you click to item with ID = {0} and Data = {1}')", x.ID, x.Data), true);
      });

      t.ItemTemplate = tf;

      gw.Columns.Add(dataField);
      gw.Columns.Add(t);
      gw.DataSource = data;
      gw.DataBind();

      this.Form.Controls.Add(gw);
    }

    public class MyTemplate : ITemplate
    {
      private readonly Action<dynamic> action;

      public MyTemplate(Action<dynamic> action)
      {
        this.action = action;
      }

      public void InstantiateIn(Control container)
      {
        var bt = new Button();
        bt.Text = "press me please";

        bt.Click += bt_Click;

        var hfId = new HiddenField();
        hfId.ID = "hfId";
        hfId.DataBinding += hfId_DataBinding;

        var hfData = new HiddenField();
        hfData.ID = "hfData";
        hfData.DataBinding += hfData_DataBinding;

        container.Controls.Add(bt);
        container.Controls.Add(hfId);
        container.Controls.Add(hfData);
      }

      void hfData_DataBinding(object sender, EventArgs e)
      {
        var hf = sender as HiddenField;
        if (hf != null)
        {
          var row = hf.NamingContainer as GridViewRow;
          if (row != null)
          {
            object dataValue = DataBinder.Eval(row.DataItem, "Data");
            hf.Value = dataValue != null ? dataValue.ToString() : string.Empty;
          }
        }
      }

      void hfId_DataBinding(object sender, EventArgs e)
      {
        var hf = sender as HiddenField;
        if (hf != null)
        {
          var row = hf.NamingContainer as GridViewRow;
          if (row != null)
          {
            object dataValue = DataBinder.Eval(row.DataItem, "ID");
            hf.Value = dataValue != null ? dataValue.ToString() : string.Empty;
          }
        }
      }

      void bt_Click(object sender, EventArgs e)
      {
        var bt = sender as Button;
        if (bt != null)
        {
          var row = bt.BindingContainer as GridViewRow;
          if (row != null)
          {
            var id = ((HiddenField)row.FindControl("hfId")).Value;
            var data = ((HiddenField)row.FindControl("hfData")).Value;
            action(new { ID = id, Data = data });
          }
        }
      }
    }
  }
}