How to get link button id which is create at run time in asp.net

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C#

i want to get link button id which is created at run time, my code is below.

for(int i=0;i<2;i++)
{
LinkButton lnkbtn1 = new LinkButton();
lnkbtn1.ID=i.ToString();
lnkbtn1.Text="link Button "+i.ToString();
lnkbtn1.Click += new EventHandler(lnkbtn1_Click);
pnl1.Controls.Add(lnkbtn1);
}
protected void lnkbtn1_Click(object sender, EventArgs e)
{
LinkButton lnkk1 = (LinkButton)sender;
string str = lnkk1.Text;
}

but in above code,i get only text.
Please help me