C#中关于Send WebRequest 方法和数据处理

   很久不更新博客了，这次大概说一下c#中的send webrequest，众所周知，.net网络编程在测试中是非常常见的，具体来说，比如我们如果测试一个api，通过send webrequest的方式来进行api层面的功能测试，然后用selenium完成前端的验证，这种模式应该说是比较方便而通用的，具体以其中最常见的http request为例，当我们需要传输数据时，需要 
1）地址：address作为webrequest参数实例化，然后设定相应属性，比如method（get还是post等等） 
2）数据：data作为httprequest的数据流写入： 

xmlresponse = null; 
responsecode = httpstatuscode.unused; 
serverresponse = string.empty; 

参数处理部分 
//format the data 
string output = data.aggregate(string.empty, (current, keyvaluepair) => current + ("&" + keyvaluepair.key + "=" + httputility.urlencode(keyvaluepair.value))); 
var encoding = new utf8encoding(); 
//设置postdata变量将output进行处理，最终得到byte[] d作为最终数据写入到webrequest中 
var postdata = encoding.ascii.getbytes(output); 
                byte[] d = encoding.getbytes(output.substring(1, output.length - 1)); 

var address = targeturl; 
//get部分的数据处理 
if (method.toupperinvariant() == "get") 
                    address=address+output; 

//post部分的数据处理 
webrequest request = webrequest.create(address) as httpwebrequest; 
//add post process 
if (request == null) 
  throw new exception("webrequest object is null."); 

request.method = "post"; 
request.contenttype = "application/x-www-form-urlencoded"; 
request.contentlength = d.length; 

serverresponse = string.empty; 

//数据读取及处理部分 
using (stream datastream = request.getrequeststream()) 
  { 
     datastream.write(d, 0, d.length); 
     datastream.close(); 

     using (var response = (httpwebresponse)request.getresponse()) 
        { 
          responsecode = response.statuscode; 
          using (stream mystream = response.getresponsestream()) 
            { 
               if (mystream != null) 
                            { 
                                var readstream = new streamreader(mystream, encoding.utf8); 
                                serverresponse = readstream.readtoend(); 
                            } 
                        } 
                        response.close(); 
            } 
         } 


                if (responsecode == httpstatuscode.ok) 
                { 
                    if (loadxml) 
                        loadxml(); 
                    return true; 
                } 
                    
                return false;