XML:将信息写入到XML中

来源：互联网发布：网络交友的坏处编辑：程序博客网时间：2024/05/22 01:33
        private void btnWrite_Click(object sender, EventArgs e)        {            if (txtName.Text.Trim().Length == 0)            {                MessageBox.Show("没有输入学生姓名", "友情提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);                txtName.Focus();                return;            }            dlgSave.Filter= "*.xml|*.xml";            dlgSave.InitialDirectory=Application.StartupPath + @"/xml";            dlgSave.RestoreDirectory = true;            dlgSave.OverwritePrompt = false;            if (dlgSave.ShowDialog() == DialogResult.OK)            {                XmlDocument xmlDoc = new XmlDocument();                FileInfo fi = new FileInfo(dlgSave.FileName);                XmlNode root = null;                if (!fi.Exists)                {                    flag = true;                    XmlNode xmlnode = xmlDoc.CreateNode(XmlNodeType.XmlDeclaration, "", "");                    xmlDoc.AppendChild(xmlnode);                    root = xmlDoc.CreateNode(XmlNodeType.Element, "成绩单", null);                    xmlDoc.AppendChild(root);                }                else                {                    flag = false;                    xmlDoc.Load(dlgSave.FileName);                    root = xmlDoc.SelectSingleNode("成绩单");//查找<成绩单>                }                XmlComment xc = xmlDoc.CreateComment(cbComment.Text);//创建一个注释                root.AppendChild(xc);                XmlElement xe1 = xmlDoc.CreateElement("学生");//创建一个<学生>节点                xe1.SetAttribute("性别", (rbMen.Checked) ? "男" : "女");//设置该节点性别属性                string sTemp = nudID.Value.ToString();                xe1.SetAttribute("学号", lab0512.Text + ((sTemp.Length == 1) ? "0" : "") + sTemp);//设置该节点学号属性                XmlElement xesub1 = xmlDoc.CreateElement("姓名");                xesub1.InnerText = txtName.Text;//设置文本节点                xe1.AppendChild(xesub1);//添加到<学生>节点中                XmlElement xesub2 = xmlDoc.CreateElement("分数");                XmlElement xesub20 = xmlDoc.CreateElement("语文");                xesub20.InnerText = nudyw.Value.ToString();                xesub2.AppendChild(xesub20);                XmlElement xesub21 = xmlDoc.CreateElement("数学");                xesub21.InnerText = nudsx.Value.ToString();                xesub2.AppendChild(xesub21);                XmlElement xesub22 = xmlDoc.CreateElement("外语");                xesub22.InnerText = nudwy.Value.ToString();                xesub2.AppendChild(xesub22);                xe1.AppendChild(xesub2);                XmlElement xesub3 = xmlDoc.CreateElement("城市");                if (cmbCity.SelectedIndex != -1)                    xesub3.InnerText = cmbCity.SelectedItem.ToString();                else                    xesub3.InnerText = "本地";                xe1.AppendChild(xesub3);                root.AppendChild(xe1);//添加到<bookstore>节点中                xmlDoc.Save(dlgSave.FileName);                if (flag)                    MessageBox.Show("成功生成XML文件!","系统提示",MessageBoxButtons.OK,MessageBoxIcon.Information);                else                    MessageBox.Show("信息已加入XML文件!" , "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Information);                cbComment.SelectedIndex = 0;                nudID.Value = 1;                txtName.Text = "";                nudyw.Value = nudsx.Value = nudwy.Value = 60;                rbMen.Checked = true;                rbWomen.Checked = false;                cmbCity.SelectedIndex = 0;            }        }
运行效果图如下: