Databinding methods such as Eval() XPath() and Bind() can only be used in the context

       SqlCommand _cmd1 = new SqlCommand("Viewstate2", _cn);
       _cmd1.CommandType = CommandType.StoredProcedure;
       _cmd1.Parameters.AddWithValue("@behcode", data);
       string data1 = Request.QueryString["id"].ToString();
       _cmd1.Parameters.AddWithValue("@id", data1);
       _cn.Open();
       SqlDataReader _dr1 = _cmd1.ExecuteReader();
       while (_dr1.Read())
       {

     lblprice.Text = _dr1["price"].ToString();
            Lbldate.Text = System.Convert.ToDateTime(miladitoshamsi(Eval("Date"))).ToString(" yyyy/MM/dd");

In the above code I get the following error

Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.  Exception Details: System.InvalidOperationException: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control. Source Error: 

Line 97:             lblprice1.Text = _dr1["price1"].ToString();
Line 98:             lblprice.Text = _dr1["price"].ToString();
Line 99: Lbldate.Text = System.Convert.ToDateTime(miladitoshamsi(Eval("Date"))).ToString(" yyyy/MM/dd");