Hi,

The WPF DocumentViewer's search function do not appear to work with FixedDocument documents. You can convert the FixedDocument created by MindFusion.Reporting to an XPS document and show this XPS document in the viewer. The following method can help you convert FixedDocument objects to XPS:

private IDocumentPaginatorSource FixedToXps(FixedDocument doc)
{
	var stream = new MemoryStream();
	var documentUri = new Uri("pack://document.xps");
	var p = Package.Open(stream, FileMode.Create, FileAccess.ReadWrite);
	PackageStore.AddPackage(documentUri, p);

	var xpsDoc = new XpsDocument(p, CompressionOption.NotCompressed, documentUri.AbsoluteUri);

	var dw = XpsDocument.CreateXpsDocumentWriter(xpsDoc);
	dw.Write(doc);

	return xpsDoc.GetFixedDocumentSequence();
} 

Note, that you need to add references to ReachFramework.dll and System.Printing.dll assemblies in order to compile this method.

Regards,
Meppy