GroupDocs.Meger-for-.NET_SwapPagesInDiagrams.cs

// For complete examples and data files, please go to https://github.com/groupdocs-merger/GroupDocs.Merger-for-.NET
string sourceFile = CommonUtilities.sourcePath + fileName;
// Preparing.
string password = "SomePasswordString";
int pageNumber1 = 1;
int pageNumber2 = 2;
SwapOptions pagesOptions = new SwapOptions(pageNumber2, pageNumber1, FileFormat.Vsdx, password);
Stream openFile = new FileStream(sourceFile, FileMode.Open);

// Main method.
DocumentResult result = new DocumentHandler().SwapPages(openFile, pagesOptions);
Stream documentStream = result.Stream;
var fileStream = File.Create(CommonUtilities.outputPath + "OutPut." + FileFormat.Vsdx);
documentStream.CopyTo(fileStream);
documentStream.Close();