Ejemplo n.º 1
0
        /// <summary>
        /// 删除一条信息
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Btn_Delete_Click(object sender, EventArgs e)
        {
            XmlDocument document = new XmlDocument();

            document.Load("BookXML.xml");
            //选择一个根元素
            XmlElement element  = document.DocumentElement;
            string     strPath  = string.Format("/bookstore/book[@ISBN=\"{0}\"]", dataGridView1.CurrentRow.Cells[1].Value.ToString());
            XmlElement selectXe = (XmlElement)element.SelectSingleNode(strPath);  //selectSingleNode 根据XPath表达式,获得符合条件的第一个节点.

            selectXe.ParentNode.RemoveChild(selectXe);

            //Linq 删除数据
            LinqXML.LinqXMLDeleteFunc(dataGridView1);
            MessageBox.Show("删除成功!");
            //Linq 删除所有数据
            LinqXML.LinqXMLDeleteAllFunc();
            MessageBox.Show("删除成功!");
        }
Ejemplo n.º 2
0
        /// <summary>
        /// 读取XML信息
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Btn_ReadXML_Click(object sender, EventArgs e)
        {
            List <BookModel> bookModels = new List <BookModel>();
            //加载XML
            XmlDocument       document          = new XmlDocument();
            XmlReaderSettings xmlReaderSettings = new XmlReaderSettings
            {
                IgnoreComments = true
            };
            XmlReader reader = XmlReader.Create("BookXML.xml", xmlReaderSettings);

            document.Load(reader);

            //获取XML根节点
            XmlNode xmlNode = document.SelectSingleNode("bookstore");
            //获取XML根节点下所有子节点
            XmlNodeList xmlNodeList = xmlNode.ChildNodes;

            foreach (XmlNode node in xmlNodeList)
            {
                BookModel bookModel = new BookModel();
                //将节点转换为元素,便于得到节点属性
                XmlElement xmlElement = (XmlElement)node;
                bookModel.BookType = xmlElement.GetAttribute("Type").ToString();
                bookModel.BookISBN = xmlElement.GetAttribute("ISBN").ToString();
                //获取book节点中的所有子节点
                XmlNodeList nodeList = node.ChildNodes;
                bookModel.BookName   = nodeList.Item(0).InnerText;
                bookModel.BookAuthor = nodeList.Item(1).InnerText;
                bookModel.BookPrice  = Convert.ToDouble(nodeList.Item(2).InnerText);

                bookModels.Add(bookModel);
            }
            dataGridView1.AutoGenerateColumns = false;
            dataGridView1.DataSource          = bookModels;
            reader.Close();

            //Linq 读取
            IEnumerable <XElement> elements = LinqXML.LinqReadXM了Func();

            showInfoByElements(elements);
        }
Ejemplo n.º 3
0
        /// <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!");
        }
Ejemplo n.º 4
0
        /// <summary>
        /// 添加一条信息
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Btn_AddItem_Click(object sender, EventArgs e)
        {
            XmlDocument document = new XmlDocument();

            document.Load("BookXML.xml");
            //选择一个要节点
            XmlNode xmlNode = document.SelectSingleNode("bookstore");
            //创建一个节点并设置属性
            XmlElement   element   = document.CreateElement("book");
            XmlAttribute attribute = document.CreateAttribute("Type");

            attribute.InnerText = "asdfg";
            element.SetAttributeNode(attribute);
            XmlAttribute attribute1 = document.CreateAttribute("ISBN");

            attribute1.InnerText = "1234";
            element.SetAttributeNode(attribute1);

            //设置子节点属性
            XmlElement elementchild = document.CreateElement("title");

            elementchild.InnerText = "qaz";
            element.AppendChild(elementchild);
            XmlElement elementchild1 = document.CreateElement("auther");

            elementchild1.InnerText = "qwert";
            element.AppendChild(elementchild1);
            XmlElement elementchlid2 = document.CreateElement("price");

            elementchlid2.InnerText = "22.00";
            element.AppendChild(elementchlid2);

            xmlNode.AppendChild(element);
            document.Save("BookXML.xml");

            //Linq 插入数据
            LinqXML.LinqXMLAddFunc();
            MessageBox.Show("插入成功!");
        }