C# 带参数的 ASP.NET Web Api HttpClient.GetAsync
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ASP.NET Web Api HttpClient.GetAsync with parameters
提问by Null Reference
I have the following Web Api method signature
我有以下 Web Api 方法签名
public HttpResponseMessage GetGroups(MyRequest myRequest)
In the client, how do I pass MyRequest to the calling method?
在客户端，如何将 MyRequest 传递给调用方法？
Currently, I have something like this
目前，我有这样的事情
var request = new MyRequest()
{
RequestId = Guid.NewGuid().ToString()
};
var response = client.GetAsync("api/groups").Result;
How can I pass requestto GetAsync?
如何传递request到GetAsync？
If it's a POSTmethod, I can do something like this
如果这是一种POST方法，我可以做这样的事情
var response = client.PostAsJsonAsync("api/groups", request).Result;
采纳答案by Badri
You cannot send a message body for HTTP GET requests and for that reason, you cannot do the same using HttpClient. However, you can use the URI path and the query string in the request message to pass data. For example, you can have a URI like api/groups/12345?firstname=bill&lastname=Lloydand the parameter class MyRequestlike this.
您不能为 HTTP GET 请求发送消息正文，因此，您不能使用HttpClient. 但是，您可以使用请求消息中的 URI 路径和查询字符串来传递数据。例如，您可以拥有像这样的 URIapi/groups/12345?firstname=bill&lastname=Lloyd和MyRequest像这样的参数类。
public class MyRequest
{
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
}
Since MyRequestis a complex type, you have to specify model binding like this.
由于MyRequest是复杂类型，您必须像这样指定模型绑定。
public HttpResponseMessage GetGroups([FromUri]MyRequest myRequest)
Now, the MyRequestparameter will contain the values from the URI path and the query string. In this case, Idwill be 12345, FirstNamewill be bill and LastNamewill be Lloyd.
现在，该MyRequest参数将包含来自 URI 路径和查询字符串的值。在这种情况下，Id将是 12345，FirstName将是 billLastName并将是 Lloyd。
