c#之将 WebClient.UploadString() 替换为 HttpClient.PostAsync

我想在我的代码中将 WebClient 替换为 HttpClient。我必须在 HttpClient 中使用什么 HttpContent 来替换 WebClient.UploadString？ 我的网络客户端代码:

string data = string.Format("name={0}&warehouse={1}&address={2}", name, shop.Warehouse.Id, shop.Address); 
 
using (var wc = new WebClient()) { 
    wc.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded"; 
    wc.Encoding = Encoding.UTF8; 
 
    string fullUrl = BaseUrl + url; 
    string response = wc.UploadString(fullUrl, data); 
    // ... 
} 

请您参考如下方法:

您可以构建您的 postdata 并在 FormUrlEncodedContent 的实例中使用它，如下所示:

// This is the postdata 
var data = new List<KeyValuePair<string, string>>(); 
data.Add(new KeyValuePair<string, string>("Name", "test")); 
 
HttpContent content = new FormUrlEncodedContent(data); 

此页面上指定了解决方案:

How to use System.Net.HttpClient to post a complex type?

您可以决定是异步发布还是同步发布，例如:

HttpResponseMessage x = await httpClient.PostAsync(fullUrl, content);