首先,你需要定义一个与该数据对应的 Protobuf 消息类型。根据数据的格式,可以定义如下消息类型:
```protobuf
syntax = "proto3";
message Node {
string id = 1;
repeated Node children = 2;
}
```
然后,你可以使用 `DynamicMessage` 类来动态创建该消息类型的对象,并使用 `JsonParser` 将 JSON 数据解析为该对象。以下是示例代码:
```csharp
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using Google.Protobuf;
using Google.Protobuf.Reflection;
using Google.Protobuf.WellKnownTypes;
namespace ProtobufDemo
{
public partial class Form1 : Form
{
private MessageDescriptor _nodeDescriptor;
public Form1()
{
InitializeComponent();
// 获取消息类型描述符
FileDescriptorSet fileDescriptorSet = FileDescriptorSet.Parser.ParseFrom(Properties.Resources.NodeDescriptor);
_nodeDescriptor = fileDescriptorSet.File[0].MessageType[0];
}
private void button1_Click(object sender, EventArgs e)
{
// 将 JSON 字符串转换为字节数组
string jsonString = "{\"id\":\"root\",\"children\":[{\"id\":\"child1\",\"children\":[]},{\"id\":\"child2\",\"children\":[{\"id\":\"grandchild1\",\"children\":[]}]}]}";
byte[] bytes = System.Text.Encoding.UTF8.GetBytes(jsonString);
// 解析字节数组为动态 Protobuf 对象
DynamicMessage root = DynamicMessage.ParseFrom(_nodeDescriptor, bytes);
// 将动态 Protobuf 对象转换为树形结构
TreeNode rootNode = new TreeNode((string)root.Fields["id"]);
ConvertToTreeNode(root, rootNode);
// 将树形结构显示在树型框中
treeView1.Nodes.Clear();
treeView1.Nodes.Add(rootNode);
}
private void ConvertToTreeNode(DynamicMessage node, TreeNode treeNode)
{
List children = (List)node.Fields["children"];
foreach (DynamicMessage child in children)
{
TreeNode childNode = new TreeNode((string)child.Fields["id"]);
treeNode.Nodes.Add(childNode);
ConvertToTreeNode(child, childNode);
}
}