RichEditDocumentServerExtensions.ExportToPdfAsync(RichEditDocumentServer, String, CancellationToken) Method

Asynchronously exports the document to the specified file in the PDF format.

Namespace: DevExpress.XtraRichEdit

Assembly: DevExpress.Docs.v20.2.dll

NuGet Package: DevExpress.Document.Processor

NuGet Packages: DevExpress.Document.Processor, DevExpress.WindowsDesktop.Document.Processor

Declaration

C#

public static Task ExportToPdfAsync(
    this RichEditDocumentServer self,
    string fileName,
    CancellationToken cancellationToken
)

VB.NET

<ExtensionAttribute>
Public Shared Function ExportToPdfAsync(
    self As RichEditDocumentServer,
    fileName As String,
    cancellationToken As CancellationToken
) As Task

Parameters

Name	Type	Description
self	RichEditDocumentServer	The current RichEditDocumentServer instance.
fileName	String	The file name (including the full path) for the newly created PDF file.
cancellationToken	CancellationToken	A CancellationToken object used to trace requests to cancel an operation.

Returns

Type	Description
Task	An asynchronous export operation.

Remarks

Important

The RichEditDocumentServerExtensions class is defined in the DevExpress.Docs.v20.2.dll assembly. Add this assembly to your project to use the RichEditDocumentServerExtensions members. You need a license for the DevExpress Office File API Subscription or DevExpress Universal Subscription to use this library in production code.

For information on PDF Export features and limitations, refer to the following help topic: Export to PDF.

If an application is hosted on Microsoft Azure, set the AzureCompatibility.Enable property to true on application startup.

Important

Take into account the following when you call this method:

• The events fired by this method’s call may occur in a different thread than the target operation.

• The operation is not thread safe (documents should not be accessed simultaneously by different threads). Wait until the operation is completed before working with the document, i.e., use the await operator.

The code sample below uses the CancellationToken object to asynchronously export a document to PDF format:

C#

private async void ConvertDocx2PdfWithCancellation()
{
  //10 second limit
  using (CancellationTokenSource source = new CancellationTokenSource(10000))
  {
    using (RichEditDocumentServer wordProcessor = new RichEditDocumentServer())
      {
          try
          {
              await wordProcessor.LoadDocumentAsync("Document.docx", source.Token);
              await wordProcessor.ExportToPdfAsync("result.pdf", source.Token);
          }
          catch (OperationCanceledException)
          {
              // Your code to handle cancellation
          }
      }
  }
}

VB.NET

Private Async Sub ConvertDocx2PdfWithCancellation()
    Using source As CancellationTokenSource = New CancellationTokenSource(10000)

        Using wordProcessor As RichEditDocumentServer = New RichEditDocumentServer()

            Try
                Await wordProcessor.LoadDocumentAsync("Document.docx", source.Token)
                Await wordProcessor.ExportToPdfAsync("result.pdf", source.Token)
            Catch __unusedOperationCanceledException1__ As OperationCanceledException
            ' Your code to handle cancellation
            End Try
        End Using
    End Using
End Sub