TdxReport.Language Property

Specifies the required language (for UI and report localization).

Declaration

property Language: string read; write;

Property Value

Type	Description
string	The target culture name for UI and report localization. You can use any ISO-based culture identifier to select the corresponding available localization.

Remarks

Use the Language property to switch between available languages for the Report Designer/Report Viewer UI and report layouts/resulting reports.

Deploy UI Localizations for Report Viewer and Designer Dialogs

Web-based Report Designer and Report Viewer end-user dialogs available for the TdxReport component support JSON localization strings obtained from the DevExpress Localization Service.

Refer to the following help topic for detailed instructions: Report Viewer and Designer UI Localization.

Localize Reports

The Language property allows you to switch between multiple languages for a report if corresponding localized values are stored in the report template layout (in the XML-like REPX format).

Refer to the following help topic for detailed information on report content localization: Report Localization.

Code Examples

Related GitHub-Hosted Example Project

View Example: Localize the DevExpress Viewer and Report Designer

Switch Between UI Languages at Runtime

The code example in this section demonstrates three button OnClick event handlers that allow users to switch between the base language (English) and two localizations (Greek and Italian). Once the TdxReport.Language property value is changed, Report Designer and Report Viewer dialogs use the corresponding localization when displayed the next time.

Delphi

uses
  dxReport;  // Declares the TdxReport class
// ...

procedure TMyForm.btnEnglishClick(Sender: TObject);
begin
  dxReport1.Language := 'en-US';
end;

procedure TMyForm.btnGreekClick(Sender: TObject);
begin
  dxReport1.Language := 'el-GR';
end;

procedure TMyForm.btnItalianClick(Sender: TObject);
begin
  dxReport1.Language := 'it-IT';
end;

C++

#include "dxReport.hpp"  // Declares the TdxReport class

// Add the following linker directive to the corresponding CPP source file:
#pragma link "dxReport"  // Required to use dxReport.hpp declarations

void __fastcall TMyForm::btnEnglishClick(TObject *Sender)
{
  dxReport1->Language = "en-US";
}

void __fastcall TMyForm::btnGreekClick(TObject *Sender)
{
  dxReport1->Language = "el-GR";
}

void __fastcall TMyForm::btnItalianClick(TObject *Sender)
{
  dxReport1->Language = "it-IT";
}

Change Report Language

This code example loads an XML-based report template (REPX) from a dataset, configures export settings, populates the template with data from another dataset, and displays the report preview:

Delphi

uses
  dxReport,  // Declares the TdxReport component and related types
  dxReport.ConnectionString.JSON.DB;  // Declares the TdxReportDataSetJSONConnection component
// ...

procedure TMyForm.Button1Click(Sender: TObject);
var
  ADataConnection: TdxReportDataSetJSONConnection;
  AReport: TdxReport;
  ALayoutStream: TStream;
begin
  ADataConnection := TdxReportDataSetJSONConnection.Create(Self);
  try
    ADataConnection.Name := 'DataSetJSONData';
    ADataConnection.DataSets.Add('Data', FDataSet);
    AReport := TdxReport.Create(Self);
    try
      AReport.ReportName := 'Report';
      ALayoutStream := FLayoutDataSet.CreateBlobStream(FLayoutDataSet.FieldByName('Layout'), bmRead);
      try
        AReport.Layout.LoadFromStream(ALayoutStream);
      finally
        ALayoutStream.Free;
      end;
      AReport.Language := 'fr-FR';
      AReport.ExportFormats := [TdxReportExportFormat.PDF,
        TdxReportExportFormat.RTF, TdxReportExportFormat.HTML];
      AReport.FilterString := 'id = 5';
      AReport.ShowViewer;
    finally
      AReport.Free;
    end;
  finally
    ADataConnection.Free;
  end;
end;

C++

#include "dxReport.hpp"  // Declares the TdxReport component and related types
#include "dxReport.ConnectionString.JSON.DB.hpp" // Declares the TdxReportDataSetJSONConnection component

// Add the following linker directives to the corresponding CPP source file:
#pragma link "dxReport"  // Required to use dxReport.hpp declarations
#pragma link "dxReport.ConnectionString.JSON.DB" //Required to use TdxReportDataSetJSONConnection declarations
// ...

void __fastcall TMyForm::Button1Click(TObject *Sender)
{
  TdxReportDataSetJSONConnection *ADataConnection;
  TdxReport *AReport;
  TStream *ALayoutStream;
  ADataConnection = new TdxReportDataSetJSONConnection(this);
  try
  {
    ADataConnection->Name = "DataSetJSONData";
    ADataConnection->DataSets->Add("Data", FDataSet);
    AReport = new TdxReport(this);
    try
    {
      AReport->ReportName = "Report";
      ALayoutStream = FLayoutDataSet->CreateBlobStream(FLayoutDataSet->FieldByName("Layout"), bmRead);
      try
      {
        AReport->Layout->LoadFromStream(ALayoutStream);
      }
      __finally
      {
        delete ALayoutStream;
      }
      AReport->Language = "fr-FR";
      AReport->ExportFormats = TdxReportExportFormats() << TdxReportExportFormat::PDF
        << TdxReportExportFormat::RTF << TdxReportExportFormat::HTML;
      AReport->FilterString = "id = 5";
      AReport->ShowViewer();
    }
    __finally
    {
      delete AReport;
    }
  }
  __finally
  {
    delete ADataConnection;
  }
}

Default Value

The Language property’s default value is an empty string.

The default Language property value indicates the en-US culture.