Questions on Reporting Forum

4 answers

427 views

Expression from datasource in the report header

Hi All,
I am trying to make this expression in textbox1 in the report header "= IsNull(Sum(IsNull(Fields.part1,0) - IsNull(Fields.part1,0) + IsNull(Fields.part3,0)),0)" where part1 ,part2 and part3 come from datasource1

And I have in a table the detailed section, its datasource is datasource1
this make result in table duplicated more times

any suggestion for setting textbox1 with different way ??

General Discussions

answered on 26 Aug 2016

12 answers

555 views

Hiding columns , reclaiming the space.

I apologise first for not trying this, but I'm currently out of the office, but have a user request to deal with concerning reporting.

Imagine I have a report with 4 columns - Col1, Col2, Col3 and Col4

Optionally, the user can request that they do not want Col2 on the report. Is there an easy way to hide Col2 (that i can do Visible=false), but ensure that Col3 and Col4 (and their headers) then move left to take up that space?

Regards
Paul.

General Discussions

answered on 26 Aug 2016

5 answers

771 views

"No parameterless constructor defined for this object" error on Telerik Reporting

I created a report and I'm encountering this error. My main report is doing fine, but my sub-reports are not. The error is

"An error has occurred while processing SubReport 'SubReport1': Invalid report type ------------- InnerException ------------- No parameterless constructor defined for this object."

I have 2 sub-reports both of them have this error. The way I connected my main report to its data source which is an XML file located on my hard disk is the same with connecting 2 sub-reports. Can someone tell me what causes this error?

Environment: vb.net, xml data source, .net 4.0, visual studio 2012

General Discussions

answered on 24 Aug 2016

4 answers

94 views

Adding sorting to Crosstab

Hi, can please someone tell me how can I put a sorting criterion in a totals column in a Crosstab.
I'm using the Visual Studio Report Designer.

Thank you.

Luis Cruz
NCR Angola

General Discussions

answered on 24 Aug 2016

1 answer

61 views

Problem with keeping distance between two tables

Hello,

I'm using wpf reporting and I faced to problem: when the height of the top table increases, it begins to cover the bottom table. What I need to do is to keep the distance between them, and I don't know how to do it. I tried doing that using itemdatabinding event

private void OnItemDataBinding(object sender, EventArgs args)
{
table1.Location = new PointU(Unit.Cm(0.0D), Unit.Cm(1.2D + table2.Height.Value));
}

but it doesn't work, because table2's actual height is unknown until report wasn't generated.

So are there any ways to do it?

Thanks,

Ivan

General Discussions

answered on 24 Aug 2016

5 answers

500 views

Give the report parameter initial value from another passed parameter

Hi All,

I am trying to make parameter at report its initial value passed from the code as a parameter

when I set the value field in the "report parameter editor" = Parameters.param2.Value , the initial value became empty after running the report

The type of 2 parameters is string , one has datasource and the other witch passed from code didn't have

any suggestion for solution??

General Discussions

answered on 24 Aug 2016

1 answer

231 views

Header and Footer in Download Telerik to Excel

Hi,

Hello, i'm new in telerik. I want to ask, why when i download the Telerik Reporting (R2 2016) to Excel the header and footer in print preview is just in page 1?

I'm using "Page Header" and "Page Footer" to set header and footer in telerik, when i download in PDF its fine, the header show in every page in print preview. Why just in Excel i cant see the header and footer in the every page?

Best Regards,

Julian Agam Riantiadi

General Discussions

answered on 23 Aug 2016

2 answers

399 views

How to access report name and report parameters via JavaScript/Jquery in the report viewer.

All of my reports shown in the report viewer in my MVC site.

However there is a need to add my own event to the viewer. (i.e. I will add a new button to the view).

My question is how can I get the report name and report parameters via javascript? I will need this information to pass back to my controller to do my own "custom" action.

General Discussions

answered on 23 Aug 2016

1 answer

159 views

MVC/HTML5 Report Viewer Instructions Unclear (R2 2016)

After spending several days trying to get the Report Viewer working in an existing MVC5 application, I thought I would layout here the "real" steps you need to do to get this working in a project, including any caveats NOT detailed in Telerik's online resources. These suggestions are based on all the errors you will get once you've added the "Telerik MVC Report Viewer View R2 2016" item template as suggested in the online forums and documentation.

1.) Startup / Global.asax order of operations IS IMPORTANT!

This comes into play especially for large existing projects which may have a lot of altered startup code in the Global.asax. You may be tempted to place the Telerik Reporting configuration (Telerik.Reporting.Services.WebApi.ReportsControllerConfiguration.RegisterRoutes(System.Web.Http.GlobalConfiguration.Configuration)) at the end of your "Application_Startup" code. However, it needs to be placed JUST right.

In most existing apps there may already be setup code for the WebApi routes (specifically "GlobalConfiguration.Configure(YourRegisterWebApiCode)"). If the call to your "GlobalConfiguration.Configure(...)" method comes BEFORE the Telerik reporting registration, you will NEVER be able to browse your reports and will have all kinds of issues, nor will you be able to even browse to "/api/reports/formats". Although not mentioned anywhere in the documentation, this is because the default routes setup for the WebApi already have a "Default" route which will get hit before even trying to resolve the Telerik ones (essentially overriding the Telerik ones). Once you register the Telerik reporting BEFORE your calls to register your custom routes "GlobalConfiguration.Configure(...)", everything is just fine!

2.) You get exceptions about "Telerik.Reporting.OpenXmlRendering.dll".
The report may still render, however, you run across this exception:
An exception of type 'System.TypeInitializationException' occurred in Telerik.Reporting.OpenXmlRendering.dll and wasn't handled before a managed/native boundary.

Upon further inspection of the Inner Exceptions, you may see:
Could not load file or assembly 'DocumentFormat.OpenXml' or one of its dependencies.
The system cannot find the file specified.":"DocumentFormat.OpenXml, Version=2.0.5022.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"

Adding a nuget reference to Microsoft's "DocumentFormat.OpenXml" will most likely fix this part, but there are more exceptions to fix yet...

3.) "InvalidCastException" occured:

After fixing the issue from #2, you may run across this exception:
An exception of type 'System.InvalidCastException' occurred in Telerik.Reporting.dll and wasn't handled before a managed/native boundary
Additional information: Specified cast is not valid.

Additional information: The type initializer for 'Telerik.Reporting.OpenXmlRendering.Wordprocessing.WordprocessingReport' threw an exception.
Additional information: The type initializer for 'Telerik.Reporting.OpenXmlRendering.Presentation.PresentationReport' threw an exception.
Additional information: The type initializer for 'Telerik.Reporting.OpenXmlRendering.Spreadsheet.SpreadsheetReport' threw an exception.

Oh so helpful! But what you may need to do (especially since the Telerik dlls are not on the current "DocumentFormat.OpenXml" version) is simply add this xml section into your web.config under the "runtime/assemblyBinding" section (of course, once you've followed #2 above):

And viola! Now your reports should run without errors!

General Discussions

answered on 19 Aug 2016

2 answers

467 views

Error path SubReport

I need to open a report that has subreports, so far managed to do.

Came the need to change the connection of the run-time report and then follow the articles of you I implemented an object that changes the connection string, but my subreport always gets the wrong path, that is, the main report opens but the subreport has problem in the path of the file in the same directory. I've tried to solve the path of the subreport and did not succeed, can anyone help me?

Below is my code:
Code my view

01.@model Samich.Relatorios.ViewModels.SGO.RelAdvertenciaMotoristaViewModel

02.

03.@{

04. Layout = null;

05.}

06.<!DOCTYPE html>

07.<html xmlns="http://www.w3.org/1999/xhtml">

08.<head>

09. <title>Telerik MVC HTML5 Report Viewer</title>

10.

11. <meta http-equiv="X-UA-Compatible" content="IE=edge">

12.

13. <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1" />

14.

15. <script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>

16.

17. <link href="http://kendo.cdn.telerik.com/2015.3.930/styles/kendo.common.min.css" rel="stylesheet" />

18. <link href="http://kendo.cdn.telerik.com/2015.3.930/styles/kendo.blueopal.min.css" rel="stylesheet" />

19.

20. 

21. <script src="@Url.Content("~/ReportViewer/js/kendo.subset.2015.3.930.min.js")"></script>

22.

23. <style>

24. #reportViewer1 {

25. position: relative;

26. width: 1300px;

27. height: 900px;

28. font-family: Verdana, Arial;

29. }

30. </style>

31.

32. <script src="@Url.Content("~/ReportViewer/js/telerikReportViewer-10.1.16.615.min.js")"></script>

33.

34.</head>

35.<body>

36.

37. @{

38. Dictionary<string, object> parametros = new Dictionary<string, object>();

39. parametros.Add("DataOcorrencia", Model.DataOcorrencia);

40. }

41.

42. @(Html.TelerikReporting().ReportViewer()

43. .Id("reportViewer1")

44. .ServiceUrl(Url.Content("/api/reports"))

45. //.ReportSource("_SGO_Relatorio_Ocorrencia_Monitoramento.trdp", parametros)

46. .ReportSource("_SGO_Relatorio_Ocorrencia_Monitoramento.trdx", parametros)

47. //.ReportSource("_SGO_Relatorio_Ocorrencia_Monitoramento.trdx")

48. //.ReportSource(Model.ReportSource)

49.

50. .ViewMode(ViewMode.PrintPreview)

51. .ScaleMode(ScaleMode.FitPageWidth)

52. .Scale(1.0)

53. .PersistSession(false)

54. .PrintMode(PrintMode.AutoSelect)

55. )

56.

57.</body>

58.

59.

60.

61.

62.

63.

64.

65.

66.

67.

68.

69.

70.

71.

72.

73.

74.

75.</html>

Code my controller RelAdvertenciaMotorista

01.using System;

02.using System.Web.Mvc;

03.using Samich.Relatorios.ViewModels.SGO;

04.using Samich.Relatorios.Helpers;

05.using Telerik.Reporting;

06.using System.Collections.Generic;

07.using System.IO;

08.using Telerik.Reporting.Services.WebApi;

09.using Telerik.Reporting.Services;

10.using Telerik.Reporting.Cache.File;

11.using System.Collections.ObjectModel;

12.

13.namespace Samich.Relatorios.Controllers.SGO

14.{

15. public class RelAdvertenciaMotoristaController : Controller

16. {

17. public ActionResult GerarRelatorio()

18. {

19.

20.

21. ////Crio e populo a ViewModel com os dados do novo relatório

22. RelAdvertenciaMotoristaViewModel vm = new RelAdvertenciaMotoristaViewModel();

23. vm.DataOcorrencia = DateTime.Now;

24. //vm.ReportSource = reportSource;

25.

26. //Chamo a ViewModel que contém o relatório

27. return View("../SGO/RelAdvertenciaMotorista/GerarRelatorio", vm);

28. }

29. }

30.}

Code my class ReportConnectionStringManager

001.using System;

002.using System.Linq;

003.using Telerik.Reporting;

004.

005.namespace Samich.Relatorios.Helpers

006.{

007. public class ReportConnectionStringManager

008. {

009. readonly string connectionString;

010.

011. public ReportConnectionStringManager(string connectionString)

012. {

013. this.connectionString = connectionString;

014. }

015.

016. public ReportSource UpdateReportSource(ReportSource sourceReportSource)

017. {

018. if (sourceReportSource is UriReportSource)

019. {

020. var uriReportSource = (UriReportSource)sourceReportSource;

021.

022. //Monto o caminho do arquivo aqui, pois podem existir subreports no relatório e

023. //a rotina pega os mesmos dinamicamente

024. if (!uriReportSource.Uri.Contains(@"\Reports\"))

025. {

026. uriReportSource.Uri = System.Web.HttpContext.Current.Server.MapPath(@"~/Reports/" + uriReportSource.Uri);

027.

028. }

029.

030.

031. var reportInstance = DeserializeReport(uriReportSource);

032. ValidateReportSource(uriReportSource.Uri);

033. this.SetConnectionString(reportInstance);

034.

035. return CreateInstanceReportSource(reportInstance, uriReportSource);

036. }

037.

038. if (sourceReportSource is XmlReportSource)

039. {

040. var xml = (XmlReportSource)sourceReportSource;

041. ValidateReportSource(xml.Xml);

042. var reportInstance = this.DeserializeReport(xml);

043. this.SetConnectionString(reportInstance);

044. return CreateInstanceReportSource(reportInstance, xml);

045. }

046.

047. if (sourceReportSource is InstanceReportSource)

048. {

049. var instanceReportSource = (InstanceReportSource)sourceReportSource;

050. this.SetConnectionString((ReportItemBase)instanceReportSource.ReportDocument);

051. return instanceReportSource;

052. }

053.

054. if (sourceReportSource is TypeReportSource)

055. {

056. var typeReportSource = (TypeReportSource)sourceReportSource;

057. var typeName = typeReportSource.TypeName;

058. ValidateReportSource(typeName);

059. var reportType = Type.GetType(typeName);

060. var reportInstance = (Report)Activator.CreateInstance(reportType);

061. this.SetConnectionString((ReportItemBase)reportInstance);

062. return CreateInstanceReportSource(reportInstance, typeReportSource);

063. }

064.

065. throw new NotImplementedException("Handler for the used ReportSource type is not implemented.");

066. }

067.

068. ReportSource CreateInstanceReportSource(IReportDocument report, ReportSource originalReportSource)

069. {

070. var instanceReportSource = new InstanceReportSource { ReportDocument = report };

071. instanceReportSource.Parameters.AddRange(originalReportSource.Parameters);

072. return instanceReportSource;

073. }

074.

075. void ValidateReportSource(string value)

076. {

077. if (value.Trim().StartsWith("="))

078. {

079. throw new InvalidOperationException("Expressions for ReportSource are not supported when changing the connection string dynamically");

080. }

081. }

082.

083.

084. public Report DeserializeReport(UriReportSource uriReportSource)

085. {

086. var settings = new System.Xml.XmlReaderSettings();

087. settings.IgnoreWhitespace = true;

088.

089. //Monto o caminho do arquivo aqui, pois podem existir subreports no relatório e

090. //a rotina pega os mesmos dinamicamente

091. if (!uriReportSource.Uri.Contains(@"\Reports\"))

092. {

093. uriReportSource.Uri = System.Web.HttpContext.Current.Server.MapPath(@"~/Reports/" + uriReportSource.Uri);

094. }

095.

096. using (var xmlReader = System.Xml.XmlReader.Create(uriReportSource.Uri, settings))

097. {

098. var xmlSerializer = new Telerik.Reporting.XmlSerialization.ReportXmlSerializer();

099. var report = (Telerik.Reporting.Report)xmlSerializer.Deserialize(xmlReader);

100. return report;

101. }

102. }

103.

104. Report DeserializeReport(XmlReportSource xmlReportSource)

105. {

106. var settings = new System.Xml.XmlReaderSettings();

107. settings.IgnoreWhitespace = true;

108. var textReader = new System.IO.StringReader(xmlReportSource.Xml);

109. using (var xmlReader = System.Xml.XmlReader.Create(textReader, settings))

110. {

111. var xmlSerializer = new Telerik.Reporting.XmlSerialization.ReportXmlSerializer();

112. var report = (Telerik.Reporting.Report)xmlSerializer.Deserialize(xmlReader);

113. return report;

114. }

115. }

116.

117. void SetConnectionString(ReportItemBase reportItemBase)

118. {

119. if (reportItemBase.Items.Count < 1)

120. return;

121.

122. if (reportItemBase is Report)

123. {

124. var report = (Report)reportItemBase;

125.

126.

127. if (report.DataSource is SqlDataSource)

128. {

129. var sqlDataSource = (SqlDataSource)report.DataSource;

130. sqlDataSource.ConnectionString = connectionString;

131. }

132. foreach (var parameter in report.ReportParameters)

133. {

134. if (parameter.AvailableValues.DataSource is SqlDataSource)

135. {

136. var sqlDataSource = (SqlDataSource)parameter.AvailableValues.DataSource;

137. sqlDataSource.ConnectionString = connectionString;

138. }

139. }

140. }

141.

142. foreach (var item in reportItemBase.Items)

143. {

144. //recursively set the connection string to the items from the Items collection

145. SetConnectionString(item);

146.

147. //set the drillthrough report connection strings

148. var drillThroughAction = item.Action as NavigateToReportAction;

149. if (null != drillThroughAction)

150. {

151. var updatedReportInstance = this.UpdateReportSource(drillThroughAction.ReportSource);

152. drillThroughAction.ReportSource = updatedReportInstance;

153. }

154.

155. if (item is SubReport)

156. {

157. var subReport = (SubReport)item;

158.

159.

160.

161.

//UriReportSource uri = new UriReportSource() { Uri = System.Web.HttpContext.Current.Server.MapPath(@"~/Reports/SGO_Ocorrencias.trdx") };

162. //subReport.ReportSource = uri;

163.

164. subReport.ReportSource = this.UpdateReportSource(subReport.ReportSource);

165. continue;

166. }

167.

168. //if (item is DetailSection)

169. //{

170. // //Seta o uri paulo

171. // var detailSectionItem = (DetailSection)item;

172.

173. // detailSectionItem.Items.ToList().ForEach(x => {

174. // if (x is SubReport)

175. // {

176. // var subReportX = (SubReport)x;

177.

178.

//            string nameReport = ((ReportItemBase)(((InstanceReportSource)subReportX.ReportSource).ReportDocument)).Name;

179. // var uriItem = new UriReportSource() { Uri = nameReport + ".trdx" };

180.

181. // if (!uriItem.Uri.Contains(@"\Reports\"))

182. // {

183.

//                uriItem.Uri = System.Web.HttpContext.Current.Server.MapPath(@"~/Reports/" + uriItem.Uri);

184. // }

185.

186. // subReportX.ReportSource = uriItem;

187. // }

188. // });

189. //}

190.

191.

192. //Covers all data items(Crosstab, Table, List, Graph, Map and Chart)

193. if (item is DataItem)

194. {

195. var dataItem = (DataItem)item;

196. if (dataItem.DataSource is SqlDataSource)

197. {

198. var sqlDataSource = (SqlDataSource)dataItem.DataSource;

199. sqlDataSource.ConnectionString = connectionString;

200. continue;

201. }

202. }

203.

204. }

205. }

206. }

207.}

Code my class MyResolver

01.using System;

02.using System.Collections.Generic;

03.using System.Linq;

04.using System.Text;

05.using System.Threading.Tasks;

06.using Telerik.Reporting;

07.using Telerik.Reporting.Services.Engine;

08.

09.namespace Samich.Relatorios.Helpers

10.{

11. public class MyResolver : IReportResolver

12. {

13. public Telerik.Reporting.ReportSource Resolve(string report)

14. {

15. Report reportInstance = null;

16.

17. //Obtenho a string de conexão que irei usar para o relatório.

18. var stringConexao = System.Configuration.ConfigurationManager.ConnectionStrings["LinaveConnectionString"].ConnectionString;

19.

20. //retrieve an instance of the report

21. var uriReportSource = new UriReportSource { Uri = report };

22.

23. //Passo a string de conexão para a classe ReportConnectionStringManager que será

24. //responsável por alterar todas as conexões de dentro do relatório

25. var newReport = new ReportConnectionStringManager(stringConexao);

26.

27. //retrieve an instance of the report

28. reportInstance = newReport.DeserializeReport(uriReportSource);

29.

30. //Atualizo o relatório com a nova conexão

31. var reportSource = newReport.UpdateReportSource(uriReportSource);

32.

33. //change the report's DataSource settings

34. (reportInstance.DataSource as Telerik.Reporting.SqlDataSource).ConnectionString = stringConexao;

35.

36. //change a nested data item's DataSource

37. //((reportInstance.Items.Find("table1", true)[0] as Telerik.Reporting.Table).DataSource = GetStoredOnTheServerData();

38. //set report parameters values

39. //reportInstance.ReportParameters["UserId"].Value = GetUserId();

40. //}

41. return new InstanceReportSource { ReportDocument = reportInstance };

42. }

43.

44.

45. }

46.}

Code my ReportController

01.namespace Samich.Relatorios.Controllers

02.{

03. using Helpers;

04. using System.IO;

05. using System.Net.Http;

06. using System.Web;

07. using System.Web.Http;

08. using Telerik.Reporting.Cache.File;

09. using Telerik.Reporting.Services;

10. using Telerik.Reporting.Services.WebApi;

11.

12. //The class name determines the service URL.

13. //ReportsController class name defines /api/report/ service URL.

14. public class ReportsController : ReportsControllerBase

15. {

16. static ReportServiceConfiguration configurationInstance;

17.

18. static ReportsController()

19. {

20. //This is the folder that contains the report definitions

21. //In this case this is the Reports folder

22. var appPath = HttpContext.Current.Server.MapPath("~/");

23. var reportsPath = Path.Combine(appPath, "Reports");

24.

25. //Add resolver for trdx/trdp report definitions,

26. //then add resolver for class report definitions as fallback resolver;

27. //finally create the resolver and use it in the ReportServiceConfiguration instance.

28. //var resolver = new ReportFileResolver(reportsPath)

29. // .AddFallbackResolver(new ReportTypeResolver());

30.

31. //Setup the ReportServiceConfiguration

32. configurationInstance = new ReportServiceConfiguration

33. {

34. HostAppId = "Html5App",

35. Storage = new FileStorage(),

36. ReportResolver = new MyResolver(),

37. //ReportResolver = resolver

38. // ReportSharingTimeout = 0,

39. // ClientSessionTimeout = 15,

40. };

41. }

42.

43. public ReportsController()

44. {

45. //Initialize the service configuration

46. this.ReportServiceConfiguration = configurationInstance;

47. }

48. }

49.}

General Discussions

answered on 19 Aug 2016