C#进行Post请求（解决url过长的问题）

//实例代码：

1.post请求

private string GetImageXY(string imgbyte)
{
string result3 = string.Empty;
try
{
string requestUri = "";//请求的url
HttpClient httpClient = new HttpClient();
//参数实例 p1=v1&p2=v2
string str = "imgbase64=" + imgbyte;
var content = new StringContent(str, Encoding.UTF8, "application/x-www-form-urlencoded");
HttpResponseMessage result = httpClient.PostAsync(requestUri, content).Result;
string result2 = result.Content.ReadAsStringAsync().Result;
result3 = result2;
}
catch (Exception ex)
{
result3 = "error";
}
return result3;
}

2.Get请求

//有时间再来补充