Question

我有这段代码：

   public void OpenFile(string fileName)
        {
            var url = Path.Combine(Server.MapPath("~/App_Data/uploads"), fileName);
            using (var fileStream =  new FileStream(url, FileMode.Open))
            {
                byte[] bytes = new byte[fileStream.Length];
                int numBytesToRead = (int)fileStream.Length;
                int numBytesRead = 0;
                fileStream.Read(bytes,numBytesRead, numBytesToRead);              
            }
        }

该代码工作正常，但我想在浏览器中显示该文件，我在文件名中单击执行此方法，参数工作正常，这是我需要的其他代码要在浏览器中显示该文件？大多数文件将是.doc和.pdf。如何在浏览器中显示文档??

Answer 1

您可以从操作方法返回FileStreamResult。将方法返回类型从void更改为ActionResult

public ActionResult OpenFile(string fileName)
{
   var pathToTheFile = Path.Combine(Server.MapPath("~/App_Data/uploads"), fileName);
   var fileStream = new FileStream(pathToTheFile,
                                    FileMode.Open,
                                    FileAccess.Read
                                );
   return  new FileStreamResult(fileStream,  MimeMapping.GetMimeMapping(fileName));    
}

在浏览器中显示文件C＃

1 个答案: