/// <summary>
/// 修改一条信息
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Btn_Modify_Click(object sender, EventArgs e)
{
XmlDocument document = new XmlDocument();
document.Load("BookXML.xml");
XmlElement xe = document.DocumentElement; // DocumentElement 获取xml文档对象的根XmlElement.
string strPath = string.Format("/bookstore/book[@ISBN=\"{0}\"]", dataGridView1.CurrentRow.Cells[1].Value.ToString());
XmlElement selectXe = (XmlElement)xe.SelectSingleNode(strPath); //selectSingleNode 根据XPath表达式,获得符合条件的第一个节点.
selectXe.SetAttribute("Type", dataGridView1.CurrentRow.Cells[0].Value.ToString()); //也可以通过SetAttribute来增加一个属性
selectXe.GetElementsByTagName("title").Item(0).InnerText = dataGridView1.CurrentRow.Cells[2].Value.ToString();
selectXe.GetElementsByTagName("author").Item(0).InnerText = dataGridView1.CurrentRow.Cells[3].Value.ToString();
selectXe.GetElementsByTagName("price").Item(0).InnerText = dataGridView1.CurrentRow.Cells[4].Value.ToString();
document.Save("Book.xml");
//Linq 修改数据
LinqXML.LinqXMLModifyFunc(dataGridView1);
MessageBox.Show("修改成功！");
}
