asp.net - ASP.Net将文件下载到客户端浏览器

Question

我正在编写一个简单的测试页，以在单击按钮时从浏览器下载文本文件。我遇到了一个从未见过的非常奇怪的错误。有什么想法吗？

该错误发生在Response.End();上，该文件从不访问客户端浏览器

码:

  string filePath = "C:\\test.txt";
  FileInfo file = new FileInfo(filePath);
  if (file.Exists)
  {
    Response.ClearContent();
    Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);
    Response.AddHeader("Content-Length", file.Length.ToString());
    Response.ContentType = "text/plain";
    Response.TransmitFile(file.FullName);
    Response.End();
  }

错误:

Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack.

Answer 1

尝试将其更改为。

 Response.Clear();
 Response.ClearHeaders();
 Response.ClearContent();
 Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);
 Response.AddHeader("Content-Length", file.Length.ToString());
 Response.ContentType = "text/plain";
 Response.Flush();
 Response.TransmitFile(file.FullName);
 Response.End();