HttpClient的不支持PostAsJsonAsync方法C# [英] HttpClient not supporting PostAsJsonAsync method C#
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问题描述
我想从使用.NET 4.5我的网络application.Am调用Web API,并在写入code我得到一个错误的HttpClient不包含定义PostAsJsonAsync方法
I am trying to call a web api from my web application.Am using .net 4.5 and while writing the code i am getting an error HttpClient does not contain a definition PostAsJsonAsync method
HttpClient client = new HttpClient();
client.BaseAddress = new Uri("http://localhost:51093/");
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
var user = new Users();
user.AgentCode = 100;
user.Remarks = "Test";
user.CollectionDate = System.DateTime.Today;
user.RemittanceDate = System.DateTime.Today;
user.TotalAmount = 1000;
user.OrgBranchID = 101;
var response = client.PostAsJsonAsync("api/AgentCollection", user).Result;
和我收到错误消息:
Error: 'System.Net.Http.HttpClient' does not contain a definition for 'PostAsJsonAsync' and
no extension method 'PostAsJsonAsync' accepting a first argument of type
'System.Net.Http.HttpClient' could be found (are you missing a using directive or an
assembly reference?)
请看看,并建议我。
推荐答案
是的,你需要添加一个参考。
Yes, you need to add a reference to
System.Net.Http.Formatting.dll
这可以在扩展组件区域被发现。
This can be found in the extensions assemblies area.
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