使用XmlDocument将dropdownlist中显示的书名的其它信息读入到相应的文本框中

 protected void Button1_Click(object sender, EventArgs e)
        {
           XmlNode node= xdoc.DocumentElement.SelectSingleNode("book[name='"+this.DropDownList1.Text+"']");
           #region 方法一
           foreach (XmlNode item in node.ChildNodes)
            {
            if(item.LocalName=="author")
            {
                this.TextBox1.Text = item.InnerText;
            }
            if (item.LocalName == "publisher")
            {
                this.TextBox2.Text = item.InnerText;
            }
            if (item.LocalName == "date")
            {
                this.TextBox3.Text = item.InnerText;
            }
            if (item.LocalName == "isbn")
            {
                this.TextBox4.Text = item.InnerText;
            }
            if (item.LocalName == "price")
            {
                this.TextBox5.Text = item.InnerText;
            }
            }
            #endregion
  #region 方法二
           TextBox1.Text = node.SelectSingleNode("author").InnerText;
           TextBox2.Text = node.SelectSingleNode("publisher").InnerText;
           TextBox3.Text = node.SelectSingleNode("date").InnerText;
           TextBox4.Text = node.SelectSingleNode("isbn").InnerText;
           TextBox5.Text = node.SelectSingleNode("price").InnerText;
            #endregion
}