Hi Gary Pansino,
Thank you for choosing Syncfusion products.
Currently we don’t have support for passing StorageFile as
an argument for saving CSV files. Please use the following code snippet to
achieve the above scenario.
Code Snippets:
StorageFile storageFile = await ApplicationData.Current.LocalFolder.CreateFileAsync("Test.csv");
await sheet.SaveAsAsync(await storageFile.OpenStreamForWriteAsync(), ",", System.Text.Encoding.UTF8);
Please let us know if you any further clarifications.
Regards,
Manojkumar.