在visual studios 2010中添加gridview中的下载超链接

问题描述：

我的问题很简单，我想将gridview的最后一列作为我计算机本地文件的下载链接。

My problem is simple, I would like to make the last column of my gridview to be a download link to a file in local on my computer.

我的数据表有3列：

User_id, request_id, FilePath

FilePath是我计算机上文件的路径（字符串），我去过的地方尝试是：
在我的网页上的gridview中显示2个第一列（User_id和request_id）。
在第3列，我添加了一个超链接字段，并尝试将其（使用属性DataNavigateUrlField）链接到列FilePath的内容。

FilePath is the path (string) to the file on my computer, what I've been trying is : In my gridview on the webpage display the 2 first columns (User_id and request_id). On the 3rd column I added a hyperlink field and tried to link it (with the property DataNavigateUrlField) to the content of the column FilePath.

我是结果是我甚至无法点击的死链接，他们只是在鼠标悬停时改变颜色。

I've ended up with dead links on which i can't even click, they just change color on mouseover.

任何人都有这方面的线索？非常感谢

Any one have a clue about that ? Thanks a lot

答

可能的解决方案是使用 TemplateField 对于您的超链接列：

A possible solution could be to use a TemplateField for your Hyperlink column:

<asp:GridView AutoGenerateColumns="false">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <a href='<%# DataBinder.Eval(Container.DataItem, "FilePath") %>'>
                    <%# DataBinder.Eval(Container.DataItem, "FilePath")%>
                </a>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

将创建所需的输出：

<tr>
    <td>
        <a href='c:/directory/file.xxx'>c:/directory/file.xxx</a>
    </td>
</tr>

似乎 HyperLinkField 不接受其 DataNavigateUrlFields 属性的文件路径。

It seems that a HyperLinkField does not accept a file path for its DataNavigateUrlFieldsproperty.

我试过通过设置 DataNavigateUrlFormatString 属性来智取它：

I tried to outsmart it by setting the DataNavigateUrlFormatString property:

<asp:HyperLinkField DataNavigateUrlFormatString="file:///{0}" DataNavigateUrlFields="FilePath" DataTextField="FilePath" />

但问题仍然存在且只会产生

but the issue remains and will only produce

<tr>
    <td>
        <a>c:/directory/file.xxx</a>
    </td>
</tr>

在visual studios 2010中添加gridview中的下载超链接

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