Question

我必须使用FileUpload控件在Web应用程序中上传.pdf文件。我试过这段代码，但它有一些问题。任何人都可以帮我这个吗？

 protected void Button1_Click(object sender, EventArgs e)
 {
      if (FileUpload1.HasFile)
      {
           if (FileUpload1.PostedFile.ContentType == ".pdf")
           {
                string path = Server.MapPath(".") + "\\" + FileUpload1.FileName;
                FileUpload1.PostedFile.SaveAs(path);
                Label6.Text = "File Uploaded Successfully...";
                StreamReader reader = new StreamReader(FileUpload1.FileContent);
                string text = reader.ReadToEnd();
           }
           else
                Label6.Text = "Upload .pdf File";
      }
      else
           Label6.Text = "Upload file";
 }

Answer 1

您应该重新构建代码，以便它可以准确地告诉您上传的错误。像这样：

 protected void Button1_Click(object sender, EventArgs e)
 {
    Label6.Text = ProcessUploadedFile();
 }

 private string ProcessUploadedFile()
 {
    if(!FileUpload1.HasFile)
        return "You must select a valid file to upload.";

    if(FileUpload1.ContentLength == 0)
        return "You must select a non empty file to upload.";

    //As the input is external, always do case-insensitive comparison unless you actually care about the case.
    if(!FileUpload1.PostedFile.ContentType.Equals("application/pdf", StringComparison.OrdinalIgnoreCase))
        return "Only PDF files are supported. Uploaded File Type: " + FileUpload1.PostedFile.ContentType;

    //rest of the code to actually process file.

    return "File uploaded successfully.";
 }

我的猜测是浏览器没有提供正确的内容/类型。试试上面的代码并告诉我们你得到的信息。

Answer 2

<INPUT id="FileUp" type="file" name="File1" runat="server">

      if(FileUp.PostedFile.ContentLength > 0)
        {
            string ext = System.IO.Path.GetExtension(FileUp.PostedFile.FileName);
            if(ext=="pdf"){
            string Filename=YourFileName+ext;
            FilePath=Server.MapPath("..") + "\\path\\toyourfile\\" + Filename;
            FileUp.PostedFile.SaveAs(FilePath);
            Label6.Text = "File Uploaded Successfully...";
            }

        }

Answer 3

您只需替换以下代码行

if (FileUpload1.PostedFile.ContentType == ".pdf")

使用此

if (FileUpload1.PostedFile.ContentType == "application/pdf")

并且您的代码运行正常。

我怎样才能上传pdf文件？

3 个答案: