get value from dynamically created TextBoxes c#

Question

get value from dynamically created TextBoxes by code is

txt show null value 

 

 

foreach (System.Web.UI.WebControls.ListItem item in ddsize.Items)

{

if (item.Selected)

{

TextBox txt = (TextBox)Panel1.FindControl("price"+ item.Value);

}

 

 

 

protected void ddsize_SelectedIndexChanged(object sender, EventArgs e)

{

if (counter > 1)

return;

foreach (ListItem item in ddsize.Items)

{

if (item.Selected)

{

Panel1.Visible = true;

TextBox price = new TextBox();

price.ID = "price" + item.Value;

//txtprice.ID = "txtprice";

Label lbl = new Label();

//lbl.ID = "lblsize";

lbl.Text = item.Text;

Panel1.Controls.Add(lbl);

Panel1.Controls.Add(price);

}

}

counter++;

}