I am trying to download an Excel document to a client browser. I used to use the following, but ContentDisposition.Attachment is no longer valid in .NET Core. I am using .NET Core 6. I’ve just spent a couple of hours try…...Family cells-net FireWave May 10, 2023, 11:15pm #1 I am trying to download...mat.Xlsx)); John.He May 11, 2023, 3:08am #2 @FireWave , In. NET...