c# - 如何将数据写入yaml文件

Question

我正在尝试构建一个简单的 windows 窗体，该窗体应该将值写入 yaml 配置文件。发布后，exe 文件保存在 中。配置目录。

private void buttonSaveSettings_Click(object sender, EventArgs e)
{
    string hostname = hostnameBox.Text;

    var path = "C:\\Users\\Nick\\Desktop\\packages\\doctrine.yaml";
    var deserializer = new YamlDotNet.Serialization.Deserializer();

    try
    {
        using (var reader = new StreamReader(path))
        {
            var obj = deserializer.Deserialize<Dictionary<object, object>>(reader);
            var doctrine = (Dictionary<object, object>)obj["doctrine"];
            var dbal = (Dictionary<object, object>)doctrine["dbal"];
            var connections = (Dictionary<object, object>)dbal["connections"];
            var dict = (Dictionary<object, object>)connections["default"];

            // TODO: Modify the dictionary
            // dict["dbname"] = "test";

            dict["dbname"] = "test";

            using (StreamWriter writer = new StreamWriter(path))
            {
                // Save Changes
                var serializer = new YamlDotNet.Serialization.Serializer();
                serializer.Serialize(writer, obj);
            }
        }
    }
    catch (Exception exception)
    {
        dumpBox.Text = exception.Message;
    }
}

那是学说配置文件(packages/doctrine.yaml)

doctrine:
    dbal:
        default_connection: default
        connections:
            default:
                dbname: dbname
                user: user
                password: password
                host: host
                driver: pdo_mysql
                server_version: '10.0.38-MariaDB'

        # IMPORTANT: You MUST configure your server version,
        # either here or in the DATABASE_URL env var (see .env file)
        #server_version: '5.7'
    orm:
        auto_generate_proxy_classes: true
        naming_strategy: doctrine.orm.naming_strategy.underscore_number_aware
        auto_mapping: true
        mappings:
            App:
                is_bundle: false
                type: annotation
                dir: '%kernel.project_dir%/src/Entity'
                prefix: 'App\Entity'
                alias: App

我不确定该任务是否可以仅通过使用 System.IO 来处理，因为我们可能需要一些额外的解析器。

问题是，我怎样才能重写属于doctrine/dbal/connections/default 的每个键的值？

Answer 1

您可以执行以下操作:

首次安装 YamlDotNet
(如果您使用 .NET Core dotnet add package YamlDotNet --version 8.1.2 )或(如果您使用包管理器 PM> Install-Package YamlDotNet -Version 8.1.2 )

根据您的需要调整代码

var path = "/path/to/file.yaml";
var deserializer = new YamlDotNet.Serialization.Deserializer();

try {
    using (var reader = new StreamReader(path)) {
        var obj = deserializer.Deserialize<Dictionary<object, object>>(reader);
        var doctrine = (Dictionary<object, object>)obj["doctrine"];
        var dbal = (Dictionary<object, object>)doctrine["dbal"];
        var connections = (Dictionary<object, object>)dbal["connections"];
        var dict = (Dictionary<object, object>)connections["default"];

        // TODO: Modify the dictionary
        // dict["dbname"] = "test";                    

        using (var writer = new StreamWriter(path)) {
            // Save Changes
            var serializer = new YamlDotNet.Serialization.Serializer();
            serializer.Serialize(writer, obj);
        }
    }                
} catch (Exception e) {
    // TODO: manage
}