单击时下载 PDF（不在浏览器中打开）

Question

我有一个指向 PDF 文件的 href 链接，单击该链接会在浏览器的新页面中打开。我希望这个下载而不是在新标签中打开。

那么如何使 PDF 文件链接可下载而不是在浏览器中打开呢？

代码如下：

<asp:FormView ID="FormView2" runat="server">
            <ItemTemplate>
                <asp:LoginView ID="LoginView1" runat="server">
                    <LoggedInTemplate>
                          <asp:HyperLink ID="HyperLink1" ToolTip="Open" CssClass="button" runat="server" NavigateUrl='<%# Eval("PDFUrl") %>' Text="Open" Target="_blank"></asp:HyperLink>
                        <br />
                    </LoggedInTemplate>
                    <AnonymousTemplate>
                            <p>You need to log in to view the book.</p>
                    </AnonymousTemplate>
                </asp:LoginView>
            </ItemTemplate>
        </asp:FormView>

后面的代码：

protected void Page_Load(object sender, EventArgs e)
{
    int bookId = Convert.ToInt32(Request.QueryString.Get("BookId"));


    using (LibraryEntities entities = new LibraryEntities())
    {
        var book = (from r in entities.Books
                          where r.Id == bookId
                          select r);
        FormView2.DataSource = book;
        FormView2.DataBind();
    }
}

Answer 1

只需将属性download 添加到<asp:HyperLink>。

最终代码将是。

<asp:HyperLink ID="HyperLink1" ToolTip="Open" CssClass="button" runat="server" 
               NavigateUrl='<%# Eval("PDFUrl") %>' Text="Open" Target="_blank" download
</asp:HyperLink>

注意：这是一个HTML5 属性，所以它只适用于HTML5 兼容的浏览器。检查此链接以查看不同浏览器上的download 属性支持 - http://caniuse.com/#feat=download

Answer 2

Response.Clear(); //eliminates issues where some response has already been sent
Response.ContentType = "text/plain";
Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}.sql", filename));
Response.Write(yourSQL);
Response.End();

here 提出了类似的问题。