c＃将固定文档转换为xps，但是xps查看器将无法打开新创建的xps文件

Question

i am trying to take a fixed document in c# and convert it to an xps and then save the xps so that i may attach it to an outlook email, but after i create the xps file and for testing purposes try to open the xps file in the xps file viewer, i get an error saying that the file cannot be opened, copy of the portion of the code where i am converting the fixed doc to an xps is pasted below:

//save fixed document in temp directory as xps document
            string filename = System.Environment.GetEnvironmentVariable("TEMP") + @"\TempFixedDocument.xps";
            System.IO.File.Delete(filename);
            XpsDocument xpsd = new XpsDocument(filename, FileAccess.ReadWrite);
            XpsDocumentWriter xw = XpsDocument.CreateXpsDocumentWriter(xpsd);
            xw.WriteAsync(fxdDoc);
            xpsd.Close();

Answer 1

I think it's because you use WriteAsync , but not wait until writing is finished. You should wait until file writing is finished and only then close the document.

You can use await keyword:

await xw.WriteAsync(fxdDoc);