ReportViewer控件不显示报告

我已经到处寻找解决这个问题的方法，但还没找到一个对我有用的方法。 我在托管服务器上设置了报告服务器（2008 R2）。 我使用报表生成器从头创建了一个报表，在使用其URL登录到报表服务器时对其进行了测试，并成功生成了报表。

当我尝试从MVC应用程序查看报告时，只有报告工具栏呈现（显示导出，打印，页面和视图报告按钮）。 它显示它是“正在加载”，在它完成之后它只是一个空白报告，但是它在工具栏上显示了正确的参数，如果我在代码中更改了参数的名称，则返回一个错误，指出参数没有存在; 所以我知道地址user / pw信息是正确的。

页面的代码和标记

        
Back to Reports / 
 
 Start Date: <input type="text" name="start" class="datepicker" value="" /> End Date: <input type="text" name="end" class="datepicker" value="" /> <input type="hidden" name="id" value="" />  
  protected void Page_Load(object sender, EventArgs e) { try { if (!IsPostBack) { if (ViewData["Start"] != null) { var param = new List  (); var start = new ReportParameter("start", ViewData["Start"].ToString()); var end = new ReportParameter("end", ViewData["End"].ToString()); var region = new ReportParameter("region", "2"); param.Add(start); param.Add(end); param.Add(region); ReportViewer1.Width = 1100; ReportViewer1.Height = 900; ReportViewer1.ShowCredentialPrompts = false; ReportViewer1.ShowDocumentMapButton = false; ReportViewer1.ShowExportControls = true; ReportViewer1.ShowFindControls = false; ReportViewer1.ShowPrintButton = true; ReportViewer1.ShowPromptAreaButton = false; ReportViewer1.ShowRefreshButton = false; ReportViewer1.ShowToolBar = true; ReportViewer1.ShowZoomControl = false; ReportViewer1.SizeToReportContent = true; ReportViewer1.ProcessingMode = ProcessingMode.Remote; IReportServerCredentials irsc = new CustomReportCredentials(ConfigurationManager.AppSettings["ReportServerUser"], ConfigurationManager.AppSettings["ReportServerPassword"], "SERVERNAME"); ReportViewer1.ServerReport.ReportServerCredentials = irsc; ReportViewer1.ServerReport.ReportServerUrl = new Uri(string.Format("https://{0}/ReportServer", ConfigurationManager.AppSettings["ReportServerUrl"])); ReportViewer1.ServerReport.ReportPath = string.Format("/{0}", ViewData["Report"]); ReportViewer1.ServerReport.SetParameters(param); ReportViewer1.ShowReportBody = true; ReportViewer1.ServerReport.Refresh(); } } } catch (Exception ex) { Response.Write(ex.Message); } }  
  
  
 
  

网络配置

 Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim UserName = HttpContext.Current.User.Identity.Name Dim paramList As New Generic.List(Of ReportParameter) paramList.Add(New ReportParameter("UserID", UserName, False)) ReportViewer1.ServerReport.SetParameters(paramList) End Sub 

 Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim UserName = HttpContext.Current.User.Identity.Name If IsPostBack = False Then ReportViewer1.Width = 900 ReportViewer1.Height = 900 Dim paramList As New Generic.List(Of ReportParameter) paramList.Add(New ReportParameter("UserID", UserName, False)) ReportViewer1.ServerReport.SetParameters(paramList) ReportViewer1.ShowReportBody = True ReportViewer1.ServerReport.Refresh() End If