Sql Data Reader does not contain the definition of Item

Hello Team,

Am trying to load data in the textbox but is like my formart is not working

 private void btn_Search_Click(object sender, EventArgs e)
        {
            int i = 0;
            dataGridView1.Rows.Clear();
            cn.Open();
            cm = new SqlCommand("select PCode,ProductDate, ProductName,Category,CostPrice,Profit,SalesPrice, Tax,TotalPrice,Barcode from tblProduct where PCode like '%" + txt_SearchProduct.Text + "%'", cn);
            dr = cm.ExecuteReader();
            while (dr.Read())
            {

                txt_ProductCode.Text = dr.Item("PCode");
                dtProductDate.Text = dr.Item("ProductDate");
                txt_Productname.Text = dr.Item("ProductName");
                cbo_Category.SelectedValue = dr.Item("Category");
                txt_CostPrice.Text = dr.Item("CostPrice");
                txt_SalesPrice.Text = dr.Item("SalesPrice");               
                cbo_Tax.SelectedValue = dr.Item("Tax");
                txt_TotalPrice.Text = dr.Item("TotalPrice");                
                txt_Barcode.Text = dr.Item("Barcode");
                dr.Close();
                cn.Close();
            }

        }