CommandName and CommandArgument

private void Page_Load(object sender, System.EventArgs e){
Button bt = new Button();
bt.Text = "new button";
bt.Click += new System.EventHandler(Button1_Click);

bt.CommandName = "ddddd";
bt.CommandArgument = "CommandArguments";
}
private void Button1_Click(object sender, System.EventArgs e)
{
string cdm = ((Button)(sender)).CommandArgument.ToLower();
string nowvalue = "";
string strcmdName = this.Button1.CommandName;
foreach(DataGridItem item in RecssDataGrid1.Items)
{

foreach(Control control in item.Cells[1].Controls)
{
if(control.GetType().ToString()=="System.Web.UI.WebControls.TextBox")
{
TextBox lb = (TextBox)control;

nowvalue = lb.Text;
}
}

}
}