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无法加载文件或程序集Microsoft.ReportViewer.WebForms.XmlSerializers

我在我的aspx页面中使用ReportViewer控件.我正在从远程处理模式访问报告.

这是我的代码:

      ReportServerDomain = System.Configuration.ConfigurationSettings.AppSettings["ReportServerDomain"];

       ReportServerUserName = System.Configuration.ConfigurationSettings.AppSettings["ReportServerUserName"];

       ReportServerPassword = System.Configuration.ConfigurationSettings.AppSettings["ReportServerPassword"];

       String ReportFolder = System.Configuration.ConfigurationSettings.AppSettings["ReportFolderName"];

       rptUrl = new Uri(Convert.ToString(System.Configuration.ConfigurationSettings.AppSettings["ReportURL"]));

       IReportServerCredentials irsc = new CustomReportCredentialsToCreateStatement(ReportServerUserName, ReportServerPassword, ReportServerDomain);

       ReportViewer1.ServerReport.ReportServerCredentials = irsc;     

       ReportViewer1.ProcessingMode = Microsoft.Reporting.WebForms.ProcessingMode.Remote;

       parameters = new ReportParameter[1];

       parameters[0] = new ReportParameter("ClientStatementBatchId", ds.Tables["ClientStatemtntBatch"].Rows[0]["ClientStatementBatchID"].ToString());

       ReportViewer1.ServerReport.ReportServerUrl = rptUrl;

       ReportViewer1.ServerReport.ReportPath = "/" + ReportFolder + "/Client Statements";


       ReportViewer1.ServerReport.SetParameters(parameters);    // i am getting error on this line.

       ReportViewer1.ServerReport.Refresh();

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错误是: