C# 我应该将 StringContent 类用于什么目的？
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What purposes should I use class StringContent for?
提问by mtkachenko
There is StringContent classin System.Net.Http namespace. What purposes should I use class StringContent for?
System.Net.Http 命名空间中有StringContent 类。我应该将 StringContent 类用于什么目的？
采纳答案by Siva Charan
It provides HTTP content based on a string.
它提供基于字符串的 HTTP 内容。
Example:
例子：
Adding the content on HTTPResponseMessage Object
在 HTTPResponseMessage 对象上添加内容
response.Content = new StringContent("Place response text here");
回答by Nenad
Every response that is basically text encoded can be represented as StringContent.
每个基本上是文本编码的响应都可以表示为StringContent.
Html reponse is text too (with proper content type set):
Html 响应也是文本（设置了适当的内容类型）：
response.Content = new StringContent("<html><head>...</head><body>....</body></html>")
On the other side, if you download/upload file, that is binary content, so it cannot be represented by string.
另一方面，如果你下载/上传文件，那是二进制内容，所以不能用字符串表示。
回答by Lombas
StringContent class creates a formatted text appropriate for the http server/client communication. After a client request, a server will respond with a HttpResponseMessageand that response will need a content, that can be created with the StringContentclass.
StringContent 类创建适合 http 服务器/客户端通信的格式化文本。在客户端请求之后，服务器将响应HttpResponseMessage并且该响应将需要一个内容，该内容可以使用StringContent该类创建。
Example:
例子：
string csv = "content here";
var response = new HttpResponseMessage();
response.Content = new StringContent(csv, Encoding.UTF8, "text/csv");
response.Content.Headers.Add("Content-Disposition",
"attachment;
filename=yourname.csv");
return response;
In this example, the server will respond with the content present on the csvvariable.
在此示例中，服务器将使用csv变量中存在的内容进行响应。
回答by Liam
Whenever I want to send an object to web api server I use StringContent to add format to HTTP content, for example to add Customer object as json to server:
每当我想将对象发送到 Web api 服务器时，我都会使用 StringContent 向 HTTP 内容添加格式，例如将 Customer 对象作为 json 添加到服务器：
public void AddCustomer(Customer customer)
{
String apiUrl = "Web api Address";
HttpClient _client= new HttpClient();
string JsonCustomer = JsonConvert.SerializeObject(customer);
StringContent content = new StringContent(JsonCustomer, Encoding.UTF8, "application/json");
var response = _client.PostAsync(apiUrl, content).Result;
}
