关于c＃：如何为HttpClient PostAsync第二个参数设置HttpContent？

How do I set up HttpContent for my HttpClient PostAsync second parameter?

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17

public static async Task<string> GetData(string url, string data)
{
UriBuilder fullUri = new UriBuilder(url);

if (!string.IsNullOrEmpty(data))
fullUri.Query = data;

HttpClient client = new HttpClient();

HttpResponseMessage response = await client.PostAsync(new Uri(url), /*expects HttpContent*/);

response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
response.EnsureSuccessStatusCode();
string responseBody = await response.Content.ReadAsStringAsync();

return responseBody;
}

PostAsync采用另一个需要为HttpContent的参数。

如何设置HttpContent？没有任何适用于Windows Phone 8的文档。

如果我执行GetAsync，效果很好！但它必须是POST，其内容为key =" bla"，something =" yay"

//编辑

非常感谢您的回答...效果很好，但是在这里仍然不确定：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

public static async Task<string> GetData(string url, string data)
{
data ="test=something";

HttpClient client = new HttpClient();
StringContent queryString = new StringContent(data);

HttpResponseMessage response = await client.PostAsync(new Uri(url), queryString );

//response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
response.EnsureSuccessStatusCode();
string responseBody = await response.Content.ReadAsStringAsync();

return responseBody;
}

我假设数据" test = something"将在api方面作为发布数据" test"获得，显然不是。另一方面，我可能需要通过发布数据来发布整个对象/数组，因此我认为json将是最好的选择。关于如何获取帖子数据的任何想法？

也许像这样：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

class SomeSubData
{
public string line1 { get; set; }
public string line2 { get; set; }
}

class PostData
{
public string test { get; set; }
public SomeSubData lines { get; set; }
}

PostData data = new PostData {
test ="something",
lines = new SomeSubData {
line1 ="a line",
line2 ="a second line"
}
}
StringContent queryString = new StringContent(data); // But obviously that won't work