C# 关于xml读写操作

喜欢ヅ旅行 2022-02-01 13:55 286阅读 0赞

项目中用到关于xml文件读写操作，保存数据较少，目前仅用简单的方法实现（XmlDocument），另外两种方法：以后再添加：XmlTextReader和Linq to Xml。  
1保存xml数据

private void savexml_Click(object sender, EventArgs e)
            {
                ///bbj 2019-5-14
                ///将panel容器中的控件保存到xml文件中
                ///
                XmlDocument ledConfigDoc = new XmlDocument();//建立XmlDocument对象
                string filepath = Environment.CurrentDirectory;//获取当前路径
                filepath += "\\LedxmlConfig.xml";
                ledConfigDoc.Load(filepath);//加载xml文件
                ledConfigDoc.LoadXml("<ledconfig></ledconfig>");//覆盖保存
    
                XmlNode root = ledConfigDoc.SelectSingleNode("ledconfig");//建立跟节点
    
                XmlElement xeKey = ledConfigDoc.CreateElement("config");//创建子节点，并且设置子节点的属性
                XmlAttribute xeType = ledConfigDoc.CreateAttribute("Type");
                xeType.InnerText = "form";
                xeKey.SetAttributeNode(xeType);
    
                XmlAttribute xeType2 = ledConfigDoc.CreateAttribute("subtype");
                xeType2.InnerText = "form";
                xeKey.SetAttributeNode(xeType2);
    
                XmlElement xeformX = ledConfigDoc.CreateElement("formX");//创建子节点
                xeformX.InnerText = panel.Tag.ToString();
                xeKey.AppendChild(xeformX);
    
                XmlElement xeformY = ledConfigDoc.CreateElement("formY");
                xeformY.InnerText = panel.TabIndex.ToString();
                xeKey.AppendChild(xeformY);
    
                XmlElement xeformWidth = ledConfigDoc.CreateElement("formWidth");
                xeformWidth.InnerText = panel.Width.ToString();
                xeKey.AppendChild(xeformWidth);
    
                XmlElement xeformHeight = ledConfigDoc.CreateElement("formHeight");
                xeformHeight.InnerText = panel.Height.ToString();
                xeKey.AppendChild(xeformHeight);
                root.AppendChild(xeKey);//挂载父节点
    
                //保存面板中所有标签的配置
    
                
    
                foreach (Control ctro in this.panel.Controls)//将容器中的控件遍历保存配置到xml文件，每个控件作为一个节点
                {
                    XmlElement xeKeytmp = ledConfigDoc.CreateElement("config");
                    XmlAttribute xeTypetmp = ledConfigDoc.CreateAttribute("Type");
                    XmlAttribute xesubTypetmp = ledConfigDoc.CreateAttribute("subtype");
                    XmlElement xelabelX = ledConfigDoc.CreateElement("labelX");
                    XmlElement xelabelY = ledConfigDoc.CreateElement("labelY");
                    XmlElement xelabelWidth = ledConfigDoc.CreateElement("labelWidth");
                    XmlElement xelabelHeight = ledConfigDoc.CreateElement("labelHeight");
                    XmlElement xelabelFontStr = ledConfigDoc.CreateElement("labelFontStr");
                    XmlElement xelabelFontSize = ledConfigDoc.CreateElement("labelFontSize");
                    XmlElement xelabelFontStyle = ledConfigDoc.CreateElement("labelFontStyle");
                    XmlElement xelabelForeColor = ledConfigDoc.CreateElement("labelForeColor");
                    XmlElement xelabelText = ledConfigDoc.CreateElement("labelText");
    
                        xeTypetmp.InnerText = "label";
                        xeKeytmp.SetAttributeNode(xeTypetmp);
    
                        xesubTypetmp.InnerText = ctro.Tag.ToString();
                        xeKeytmp.SetAttributeNode(xesubTypetmp);
    
                        xelabelX.InnerText = ctro.Location.X.ToString();
                        xeKeytmp.AppendChild(xelabelX);
    
                        xelabelY.InnerText = ctro.Location.Y.ToString();
                        xeKeytmp.AppendChild(xelabelY);
    
                        xelabelWidth.InnerText = ctro.Width.ToString() ;
                        xeKeytmp.AppendChild(xelabelWidth);
    
                        xelabelHeight.InnerText = ctro.Height.ToString();
                        xeKeytmp.AppendChild(xelabelHeight);
    
                        xelabelFontStr.InnerText = ctro.Font.FontFamily.Name;
                        xeKeytmp.AppendChild(xelabelFontStr);
    
                        xelabelFontSize.InnerText = ctro.Font.Size.ToString();
                        xeKeytmp.AppendChild(xelabelFontSize);
    
                        xelabelFontStyle.InnerText = ctro.Font.Style.ToString();
                        xeKeytmp.AppendChild(xelabelFontStyle);
    
                        xelabelForeColor.InnerText = ctro.ForeColor.Name;
                        xeKeytmp.AppendChild(xelabelForeColor);
    
                        xelabelText.InnerText = ctro.Text;
                        xeKeytmp.AppendChild(xelabelText);
                        root.AppendChild(xeKeytmp);               
                }
                ledConfigDoc.Save(filepath);//保存xml文件         
            }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jhb2JpbmdqaQ_size_16_color_FFFFFF_t_70]  
2读取xml文件

XmlDocument doc;
                #region 
                ///<summary>
                ///bbj 2019-5-14
                ///防止xml中的注释对读取文档有影响
                doc = new XmlDocument();
                XmlReaderSettings settings = new XmlReaderSettings();
                settings.IgnoreComments = true;//忽略文档中的注释
                string filepath = Environment.CurrentDirectory;
                filepath += "\\LedxmlConfig.xml";
                XmlReader reader = XmlReader.Create(filepath, settings);
                doc.Load(reader);
                #endregion
                XmlNode xn = doc.SelectSingleNode("ledconfig");//得到根节点
                XmlNodeList xnl = xn.ChildNodes;//得到根节点下所有的子节点
                LedFormConfig lfc = new LedFormConfig();
                List<LedLabelControls> labelList = new List<LedLabelControls>();
                LedLabelControls labelTmp = null;
                foreach (XmlNode xnode in xnl)
                {
                    //xmlclass bookclass = new xmlclass();
                    XmlElement xe = (XmlElement)xnode;
                    string str = xe.GetAttribute("Type").ToString();
                    XmlNodeList xnlist = xe.ChildNodes;
                    if(str == "form")
                    {
                        lfc.formX =Convert.ToInt32(xnlist.Item(0).InnerText);
                        lfc.formY = Convert.ToInt32(xnlist.Item(1).InnerText);
                        lfc.formWidth = Convert.ToInt32(xnlist.Item(2).InnerText);
                        lfc.formHeight = Convert.ToInt32(xnlist.Item(3).InnerText);
                    }
                    if (str == "label")
                    {
                        labelTmp = new LedLabelControls();
                        labelTmp.labelX = Convert.ToInt32(xnlist.Item(0).InnerText);
                        labelTmp.labelY = Convert.ToInt32(xnlist.Item(1).InnerText);
                        labelTmp.labelWidth = Convert.ToInt32(xnlist.Item(2).InnerText);
                        labelTmp.labelHeight = Convert.ToInt32(xnlist.Item(3).InnerText);               
                        labelTmp.labelFontStr = xnlist.Item(4).InnerText;
                        labelTmp.labelFontSize = Convert.ToInt32(xnlist.Item(5).InnerText);
                        labelTmp.labelFontStyle = xnlist.Item(6).InnerText;
                        labelTmp.labelForeColor = xnlist.Item(7).InnerText;
                        labelTmp.labelText = xnlist.Item(8).InnerText;
                        labelTmp.labelTag = xe.GetAttribute("subtype").ToString();
                        labelList.Add(labelTmp);
                    }
                }
                reader.Close();//读取xml文件结束
                。。。。后续操作。。。

![在这里插入图片描述][20190514172056742.png]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jhb2JpbmdqaQ_size_16_color_FFFFFF_t_70]: /images/20220201/78f96cce70f04a47bbb965027fc784bb.png
[20190514172056742.png]: /images/20220201/3d6d8f08a20a47e6a80910dc01c78894.png