ServerReport渲染超时

Question

我在CRM工作流程中实施serverReport。（不是在线版本）

我设置了工作流程非沙箱，我试图在C＃Webservice中实现一个版本的ServerReport。

这是代码:(最后一行是抛出异常的那一行）

        sr.ReportServerUrl = new Uri(reportServerBaseURL);
        sr.ReportPath = reportDir + reportName;

        // Credential to connect with CRM
        IReportServerCredentials irsc = new CustomReportCredentials(username, password, "");
        sr.ReportServerCredentials = irsc;

        if (paramList != null && paramList.Count > 0)
        {
            bool isTimeout = true;
            for (int i = 0; i < 6; i++)
            {
                try
                {
                    sr.Timeout = 5000;
                    sr.Refresh();
                    sr.SetParameters(paramList);
                    isTimeout = false;
                    break;
                }
                catch (Exception ex)
                {
                }
            }
            if (isTimeout)
            {
                string message = "Report timeout";
                throw new Exception(message);
            }
        }
        sr.Timeout = 5000;
        sr.Refresh();
        string renderingString = null;

        switch (renderingMethod)
        {
            case RSRenderingMethods.PDF:
                renderingString = "PDF";
                break;
            case RSRenderingMethods.EXCEL:
                renderingString = "EXCEL";
                break;
            case RSRenderingMethods.PNG:
            case RSRenderingMethods.JPEG:
            case RSRenderingMethods.GIF:
            case RSRenderingMethods.TIFF:
                renderingString = "IMAGE";
                break;
        }
        //I'm reaching this point without problems, the format I'm using is PDF
        byte[] bytes = bytes = sr.Render(renderingString, null); //this line is throwing the exception

使用WebService，我对报告呈现没有任何问题，而且我不知道为什么这次我会使用它们。

报告大约30-40行，所以它根本不大。可能问题出在我正在做的事情上吗？