Winform中自定义xml配置文件后对节点进行读取与写入

逃离我推掉我的手 2024-04-18 08:31 60阅读 0赞

## 场景 ##

Winform中自定义xml配置文件，并配置获取文件路径：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/article/details/100522648][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100522648]

上面已经实现自定义配置文件的配置和读取的基础上，继续对配置文件进行读取与写入。

xml配置文件如下：

<?xml version="1.0" encoding="utf-8" ?>
    <Configure>
        
        <yConut>1</yConut>
        
        <YAxis>
            
            <YAxi>
                <num>1</num>
                <title>温度</title>
                <color>black</color>
                <min>-1500</min>
                <max>1500</max>
            </YAxi>
            
            <Yaxi>
                <num>2</num>
                <title>电压</title>
                <color>black</color>
                <min>-1500</min>
                <max>1500</max>
            </Yaxi>
        </YAxis>
      
    </Configure>

关注公众号  
霸道的程序猿  
获取编程相关电子书、教程推送与免费下载。

大量编程视频教程：[https://space.bilibili.com/164396311][https_space.bilibili.com_164396311]

## 实现 ##

### 配置文件读取 ###

添加一个工具类的方法

public static void readConfig()
            {
                //获取可执行文件的路径-即bin目录下的debug或者release目录
                string context = System.Windows.Forms.Application.StartupPath;
                string path = String.Concat(context,@"\config\YAxisSet.xml");
                XmlDocument xml = new XmlDocument();
                //打开一个xml
                try
                {
                    xml.Load(path);
                    //选择匹配 XPath 表达式的第一个 XmlNode
                    XmlNode Configure = xml.SelectSingleNode("Configure/YAxis/YAxi");
                    //读取节点数据
                    if (Configure !=null)
                    {
                        string portName = Configure.SelectSingleNode("title").InnerText;
                        MessageBox.Show("第一个节点名是：" + portName);
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
             }

然后添加一个按钮，在按钮的点击事件中调用此方法

private void simpleButton1_Click(object sender, EventArgs e)
            {
                ConfigAccessUtils.readConfig();
            }

### 效果 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

### 写入配置文件 ###

同样在工具类中新增方法

public static void writeConfig()
            {
                //获取可执行文件的路径
                string context = System.Windows.Forms.Application.StartupPath;
                string path = String.Concat(context, @"\config\YAxisSet.xml");
                XmlDocument xml = new XmlDocument();
                //打开一个xml
                try
                {
                    xml.Load(path);
                    //选择匹配 XPath 表达式的第一个 XmlNode
                    XmlNode Configure = xml.SelectSingleNode("Configure/YAxis/YAxi");
                    //读取节点数据
                    if (Configure != null)
                    {
                        string portName = Configure.SelectSingleNode("title").InnerText;
                        MessageBox.Show("写入之前节点名是：" + portName);
                    }
                    //写入节点数据
                    Configure.SelectSingleNode("title").InnerText = "霸道";
                    string afterWrite = Configure.SelectSingleNode("title").InnerText;
                    xml.Save(path);
                    MessageBox.Show("写入之后节点名是：" + afterWrite);
                  
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
            }

### 效果 ###

写入之前

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1][]

写入之后

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 2][]

注：

进行修改配置文件的内容，真正被修改的是bin下的debug目录下的配置文件。

[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100522648]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/100522648
[https_space.bilibili.com_164396311]: https://space.bilibili.com/164396311
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/438a47fd47a64c5d8f38cd6b074b4268.jpg
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/0e05c20d1dc448e09581fc4c05196631.jpg
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 2]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/17/b34e9c93b089405cb0f71182de924f6a.jpg