如何在C#中更改SSRS报告的高度？

Question

嗨,我正在开发一个MVC项目,其中我有一个报告页面,用户可以使用报告查看器查看报告.

我需要为报告动态设置页面大小,我尝试了很多方法来解决这个问题,但我做不到.

我可以使用此代码更改ReportViewer大小

rptviewer.Height = Unit.Pixel(520);

请帮助我解决以下问题.

1.是否可以使用C#代码更改SSRS报告页面高度？

2.是否可以在运行时更改纸张尺寸？

我以前的解决方法

<-------- 1 --------->

 System.Drawing.Printing.PageSettings pg = new System.Drawing.Printing.PageSettings();
                pg.Margins.Top = 0;
                pg.Margins.Bottom = 0;
                pg.Margins.Left = 0;
                pg.Margins.Right = 0;
                System.Drawing.Printing.PaperSize size = new PaperSize(); 
                size.RawKind = (int)PaperKind.A5;
                pg.PaperSize = size;  
                rptviewer.SetPageSettings(pg);  
                ViewBag.ReportViewer = rptviewer;
                return View("_ReportView");

<-------- 2 --------->

 System.Drawing.Printing.PageSettings MyPageSize= new System.Drawing.Printing.PageSettings(); 
 MyPageSize.PaperSize = new System.Drawing.Printing.PaperSize("Custom", 17, 12); 
 rptviewer.SetPageSettings(MyPageSize);

<-------- 3 --------->

var setup = rptviewer.GetPageSettings();           
setup.PaperSize.Height = 1500;
rptviewer.SetPageSettings(setup);

上述逻辑都不适合我:-(

Answer 1

问题是，为了控制渲染过程中的页面大小，我们需要在运行时将正确的设备信息设置传递给报表。这适用于面向物理页面的渲染，如 PDF、图像等。这是一个简单的 Xml 字符串，可以作为参数传递到报表以控制这些设置。每种导出类型都有一组不同的属性，可以通过这种方式覆盖和控制这些属性。

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在以下示例中，执行导出为 PDF 并传递页面高度和宽度以匹配 A4 纸张尺寸作为目标设备（第 66 行）：

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 private void RenderReportToClient()\n {\n     //set credentials\n     RSExecuteProxy.ReportExecutionService rs = new RSExecuteProxy.ReportExecutionService();\n    rs.Credentials = System.Net.CredentialCache.DefaultCredentials;\n\n    RSProxy.ReportingService2005 rsInfo = new RSProxy.ReportingService2005();\n    rsInfo.Credentials = System.Net.CredentialCache.DefaultCredentials;\n     // init render args\n    byte[] result = null;\n    string reportPath = rptViewer.ServerReport.ReportPath;\n   string format = "PDF";\n    string historyId = null;\n     string encoding;\n    string mimeType;\n     string extension;\n    RSExecuteProxy.Warning[] warnings = null;\n     string[] streamIDs = null;\n     //init exec info\n     RSExecuteProxy.ExecutionInfo execInfo = new RSExecuteProxy.ExecutionInfo();\n     RSExecuteProxy.ExecutionHeader execHeader = new RSExecuteProxy.ExecutionHeader();\n     rs.ExecutionHeaderValue = execHeader;\n     //get report\n     execInfo = rs.LoadReport(reportPath, historyId);\n     String SessionId = rs.ExecutionHeaderValue.ExecutionID;\n    //get parameter info\n     ReportParameterInfoCollection parameters = rptViewer.ServerReport.GetParameters();\n    //figure out how many parameters we will have \n     //those with multi-value will need there own ParameterValue in the array\n    int paramCount = 0;\n     foreach (ReportParameterInfo pramInfo in parameters)\n     {\n         paramCount += pramInfo.Values.Count;\n    }\n\n    RSExecuteProxy.ParameterValue[] prams = new SSRSWeb.RSExecuteProxy.ParameterValue[paramCount];\n    int currentPramPosition = 0;\n\n     //set pram values\n     foreach (ReportParameterInfo pramInfo in parameters)\n     {\n         foreach (string pramValue in pramInfo.Values)\n         {\n           prams[currentPramPosition] = new SSRSWeb.RSExecuteProxy.ParameterValue();\n            prams[currentPramPosition].Label = pramInfo.Name;\n            prams[currentPramPosition].Name = pramInfo.Name;\n         prams[currentPramPosition].Value = pramValue;\n            currentPramPosition++;\n        }\n      }\n\n       rs.SetExecutionParameters(prams, "en-US");\n\n      //build the device settings  (A4 8.3 \xc3\x97 11.7)\n       string deviceInfo = string.Format("<DeviceInfo><PageHeight>{0}</PageHeight><PageWidth>{1}</PageWidth></DeviceInfo>", "11.7in", "8.3in");\n\n    //get report bytes\n     result = rs.Render(format, deviceInfo, out extension, out encoding, out mimeType, out warnings, out streamIDs);\n\n       Response.ClearContent();\n      Response.AppendHeader("Content-Disposition", "inline;filename=report.pdf");\n       Response.AppendHeader("content-length", result.Length.ToString());\n     Response.ContentType = "application/pdf";\n    Response.BinaryWrite(result);\n    Response.Flush();\n     Response.Close();\n   }\n

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保存报告后，您可以查看 PDF 并检查属性，并注意到页面高度和宽度为指定的 8.3 英寸 x 11.7 英寸。

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