C# 每个行的PostExecute（）输出缓冲区

我在SSIS中的脚本组件中有以下代码

我试图反序列化JSON输出并将响应输出到数据库

反序列化部分正在返回响应

但是，我得到的“对象引用”未设置为实例 OutputBuffer.AddRow（）上的错误

我在兜圈子。我做错了什么

public class ScriptMain : UserComponent
{

   public override void PostExecute()
    {
        base.PostExecute();

        string vOpportunityURL = Variables.pardotopportunityurl;
        System.Windows.Forms.MessageBox.Show(vOpportunityURL);

        int vMaxOpportunityId = Variables.pardotopportunitymaxid;
        System.Windows.Forms.MessageBox.Show(Convert.ToString(vMaxOpportunityId));

        int vProcessedRecordCount = Variables.pardotrecordcnt;
        System.Windows.Forms.MessageBox.Show(Convert.ToString(vProcessedRecordCount));

        var vProcessDate = Variables.pardotprocessdt;
        System.Windows.Forms.MessageBox.Show(Convert.ToString(vProcessDate));

        RootObject oppOutputResponse = GetWebServiceResult(vOpportunityURL);

        foreach (Opportunity op in oppOutputResponse.result.opportunity)
        {

            OpportunityDataBuffer.AddRow();
            OpportunityDataBuffer.ID = op.id;
            System.Windows.Forms.MessageBox.Show(Convert.ToString(op.id));
            OpportunityDataBuffer.Name = op.name;
            System.Windows.Forms.MessageBox.Show(Convert.ToString(op.name));

        }


    }


    private RootObject GetWebServiceResult(string vOpportunityURL)
    { 
        // Create API WEeb Service Request

        HttpWebRequest opportunityFullDataReq = (HttpWebRequest)WebRequest.Create(vOpportunityURL);

        var opportunityDataPostStr = "user_key=";
            opportunityDataPostStr += Variables.pardotauthusrkey;
            opportunityDataPostStr += "&api_key=";
            opportunityDataPostStr += Variables.pardotapikey;
            opportunityDataPostStr += "&output=full";
            opportunityDataPostStr += "&format=json";
            opportunityDataPostStr += "&sort_by=id";
            opportunityDataPostStr += "&sort_order=ascending";
            opportunityDataPostStr += "&id_greater_than=";
            opportunityDataPostStr += Variables.pardotopportunitymaxid;

            System.Windows.Forms.MessageBox.Show(Convert.ToString(opportunityDataPostStr));
            System.Windows.Forms.MessageBox.Show(vOpportunityURL + Convert.ToString(opportunityDataPostStr));

        var opportunityPostStream = Encoding.ASCII.GetBytes(opportunityDataPostStr);

        opportunityFullDataReq.Method = "POST";
        opportunityFullDataReq.ContentType = "application/x-www-form-urlencoded";
        opportunityFullDataReq.ContentLength = opportunityPostStream.Length;

        using(var opportunityStream = opportunityFullDataReq.GetRequestStream())
        {
            opportunityStream.Write(opportunityPostStream, 0, opportunityPostStream.Length);
        }

        // Capture Web Service Respose

        HttpWebResponse opportunityFullDataResponse = (HttpWebResponse)opportunityFullDataReq.GetResponse();

        RootObject opportunityWSResponse = null;

        Stream opportunityJsonStream = opportunityFullDataResponse.GetResponseStream();
        string wsResponseString = null;

        using (StreamReader wsResponseReader = new StreamReader(opportunityJsonStream))
        {
            wsResponseString = wsResponseReader.ReadToEnd();
            wsResponseReader.Close();
        }

        JavaScriptSerializer wsResponseJson = new JavaScriptSerializer();

        //var serialJsonResponseString = wsResponseJson.Serialize(wsResponseString);
        System.Windows.Forms.MessageBox.Show(wsResponseString.ToString());

        opportunityWSResponse = wsResponseJson.Deserialize<RootObject>(wsResponseString);

        return opportunityWSResponse;
   }

public类ScriptMain:UserComponent
{
公共重写void PostExecute（）
{
base.PostExecute（）；
字符串vOpportunityURL=Variables.pardotportunityurl；
System.Windows.Forms.MessageBox.Show（vOpportunityURL）；
int-vMaxOpportunityId=Variables.pardotopportunitymaxid；
System.Windows.Forms.MessageBox.Show（Convert.ToString（vMaxOpportunityId））；
int vProcessedRecordCount=Variables.pardoRecordCnt；
Show（Convert.ToString（vProcessedRecordCount））；
var vProcessDate=Variables.pardotprocessdt；
System.Windows.Forms.MessageBox.Show（Convert.ToString（vProcessDate））；
RootObject oppOutputResponse=GetWebServiceResult（vOpportunityURL）；
foreach（Opportunity op in Opportunity OutputResponse.result.Opportunity）
{
OpportunityDataBuffer.AddRow（）；
OpportunityDataBuffer.ID=op.ID；
System.Windows.Forms.MessageBox.Show（Convert.ToString（op.id））；
OpportunityDataBuffer.Name=op.Name；
System.Windows.Forms.MessageBox.Show（Convert.ToString（op.name））；
}
}
私有根对象GetWebServiceResult（字符串vOpportunityURL）
{ 
//创建API WEeb服务请求
HttpWebRequest opportunityFullDataReq=（HttpWebRequest）WebRequest.Create（vOpportunityURL）；
var opportunityDataPostStr=“user_key=”；
opportunityDataPostStr+=Variables.pardoAuthusRkey；
opportunityDataPostStr+=”&api_key=“；
opportunityDataPostStr+=Variables.pardotapikey；
opportunityDataPostStr+=“&output=full”；
opportunityDataPostStr+=“&format=json”；
opportunityDataPostStr+=“&sort_by=id”；
opportunityDataPostStr+=“&sort\u order=升序”；
opportunityDataPostStr+=”&id_大于“”；
opportunityDataPostStr+=Variables.pardotopportunitymaxid；
Show（Convert.ToString（opportunityDataPostStr））；
System.Windows.Forms.MessageBox.Show（vOpportunityURL+Convert.ToString（opportunityDataPostStr））；
var opportunityPostStream=Encoding.ASCII.GetBytes（opportunityDataPostStr）；
opportunityFullDataReq.Method=“POST”；
opportunityFullDataReq.ContentType=“应用程序/x-www-form-urlencoded”；
opportunityFullDataReq.ContentLength=opportunityPostStream.Length；
使用（var opportunityStream=opportunityFullDataReq.GetRequestStream（））
{
写入（opportunityPostStream，0，opportunityPostStream.Length）；
}
//捕获Web服务响应
HttpWebResponse opportunityFullDataResponse=（HttpWebResponse）opportunityFullDataReq.GetResponse（）；
RootObject opportunityWSResponse=null；
Stream opportunityJsonStream=opportunityFullDataResponse.GetResponseStream（）；
字符串wsResponseString=null；
使用（StreamReader wsResponseReader=新的StreamReader（opportunityJsonStream））
{
wsResponseString=wsResponseReader.ReadToEnd（）；
wsResponseReader.Close（）；
}
JavaScriptSerializer wsResponseJson=新的JavaScriptSerializer（）；
//var serialJsonResponseString=wsResponseJson.Serialize（wsResponseString）；
System.Windows.Forms.MessageBox.Show（wsResponseString.ToString（））；
opportunityWSResponse=wsResponseJson.Deserialize（wsResponseString）；
返回机会WSResponse；
}