在单个表达式中初始化协议缓冲区

Question

我正在中使用协议缓冲区。net，并使用protoc生成C#类。例如，让我们从https://developers.google.com/protocol-buffers/docs/proto3:

message SearchResponse {
  repeated Result results = 1;
}

message Result {
  string url = 1;
  string title = 2;
  repeated string snippets = 3;
}

并让我们尝试初始化生成的C#类。

他们看起来像这样

public class SearchResponse
{
    public RepeatedField<Result> Results { get; } = new RepeatedField<Result>();
}

public class Result
{
    public string Url { get; set; }
    public string Title { get; set; }
    public RepeatedField<string> Snippets { get; } = new RepeatedField<string>();
}

现在，让我们尝试初始化它。理想情况下，我希望能够做到以下几点：

SearchResponse GetSearchResponse => new SearchResponse
{
    Results = new RepeatedField<SearchResponse>
    {
        new Result
        {
            Url = "..."
            Title = "..."
            Snippets = new RepeatedField<string> {"a", "b", "c"}
        }
    }
};

但是，由于集合没有setter，因此我必须跨多个表达式初始化它：

SearchResponse GetSearchResponse
{
    get
    {
        var response = new SearchResponse();
        var result = new Result
        {
            Url = "..."
            Title = "..."
        }
        result.Snippets.AddRange(new[]{"a", "b", "c"});
        response.Results.Add(result);
        return response;
    }
}

理想情况下，一个表达式是由5个表达式和语句组成的混合体。

有没有更简洁的方法来初始化我所缺少的这些结构？

Answer 1

<代码>重复字段

new SearchResponse {
    Results = {
        new Result {
            Url = "...",
            Title = "...",
            Snippets = { "a", "b", "c" }
        }
    }
}