如何在C#项目中调用WebApi？针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
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private void button1_Click(object sender, EventArgs e)
{
string ss= HttpPost("http://localhost:41558/api/Demo/PostXXX", "{Code:\"test089\",Name:\"test1\"}");
}
public static string HttpPost(string url, string body)
{
//ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
Encoding encoding = Encoding.UTF8;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "POST";
request.Accept = "text/html, application/xhtml+xml, */*";
request.ContentType = "application/json";
byte[] buffer = encoding.GetBytes(body);
request.ContentLength = buffer.Length;
request.GetRequestStream().Write(buffer, 0, buffer.Length);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
{
return reader.ReadToEnd();
}
}Get：
private void button1_Click(object sender, EventArgs e)
{
string ss = HttpGet("http://localhost:41558/api/Demo/GetXXX?Name=北京");
}
public static string HttpGet(string url)
{
//ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
Encoding encoding = Encoding.UTF8;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "GET";
request.Accept = "text/html, application/xhtml+xml, */*";
request.ContentType = "application/json";
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
{
return reader.ReadToEnd();
}
}Post:
private async void button2_Click(object sender, EventArgs e)
{
HttpClient client = new HttpClient();
//由HttpClient发出Delete Method
HttpResponseMessage response = await client.DeleteAsync("http://localhost:41558/api/Demo"+"/1");
if (response.IsSuccessStatusCode)
MessageBox.Show("成功");
}
private async void button3_Click(object sender, EventArgs e)
{
//创建一个处理序列化的DataContractJsonSerializer
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(People));
MemoryStream ms = new MemoryStream();
//将资料写入MemoryStream
serializer.WriteObject(ms, new People() { Id = 1, Name = "Hello ni" });
//一定要在这设定Position
ms.Position = 0;
HttpContent content = new StreamContent(ms);//将MemoryStream转成HttpContent
content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json");
HttpClient client = new HttpClient();
//由HttpClient发出Put Method
HttpResponseMessage response = await client.PutAsync("http://localhost:41558/api/Demo"+ "/1", content);
if (response.IsSuccessStatusCode)
MessageBox.Show("成功");
}Get:
using (WebClient client = new WebClient())
{
client.Headers["Type"] = "GET";
client.Headers["Accept"] = "application/json";
client.Encoding = Encoding.UTF8;
client.DownloadStringCompleted += (senderobj, es) =>
{
var obj = es.Result;
};
client.DownloadStringAsync("http://localhost:41558/api/Demo");
}关于如何在C#项目中调用WebApi问题的解答就分享到这里了，希望以上内容可以对大家有一定的帮助，如果你还有很多疑惑没有解开，可以关注亿速云行业资讯频道了解更多相关知识。
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