我有一个ASP.net
网络应用程序,它保存在会话中输入的所有详细信息,最后发送一封电子邮件,其中包含所有详细信息,包括上传文件的附件(所有这些目前工作正常)。
我遇到的问题是文件上传页面需要进行更改。我现在想要上传多个文档,但是分开上传,所以基本上用户找到要上传的文件,然后点击“添加”文件。按钮。然后应该清除上传文件字段,并且表格应该填充上传的文件,并删除&删除'每个上传文件的按钮。
此表中应显示的详细信息为:
正如我所说,我使用背后的代码进行单个文件上传,但我不知道如何实现我之后的所有内容,以便所有上传的文档都在我的电子邮件中发送。
当前HTML
<div class="form-group">
<div class="col-sm-offset-2 col-sm-5">
<div class="fileinput fileinput-new input-group" data-provides="fileinput">
<div class="form-control" data-trigger="fileinput" style="background-color: #ededed">
<span class="fileinput-filename"></span>
</div>
<span class="input-group-addon btn btn-default btn-file">
<span class="fileinput-new">
<span class="glyphicon glyphicon-folder-open" title="Click to select a file."></span>
</span>
<span class="fileinput-exists">
<span class="glyphicon glyphicon-folder-open" title="Click to change the selected file."></span>
</span>
<input type="file" name="..." id="fuAttachment" runat="server" />
</span>
</div>
</div>
<div class="col-sm-3">
<asp:DropDownList ID="Step03WebTypeDD" runat="server" class="form-control">
<asp:ListItem Value="- - Please select - -">- - Please select - -</asp:ListItem>
<asp:ListItem Value="Requirements">Requirements</asp:ListItem>
<asp:ListItem Value="Functional specification">Functional specification</asp:ListItem>
<asp:ListItem Value="Page Content">Page Content</asp:ListItem>
<asp:ListItem Value="Page Designs">Page Designs</asp:ListItem>
<asp:ListItem Value="Page Designs">Other</asp:ListItem>
</asp:DropDownList>
</div>
<div class="col-sm-1">
<asp:LinkButton ID="UploadAddButton" runat="server" OnClick="Step05UploadAddButton_Click" CssClass="btn btn-success pull-right" ToolTip="Click to upload the file.">
<span class="glyphicon glyphicon-plus"></span> Add
</asp:LinkButton>
</div>
</div>
当前代码
protected void Step05UploadAddButton_Click(object sender, EventArgs e)
{
var file = fuAttachment.PostedFile;
if (file != null && fuAttachment.PostedFile.FileName != "")
{
var content = new byte[file.ContentLength];
file.InputStream.Read(content, 0, content.Length);
Session["FileContent"] = content;
Session["FileContentType"] = file.ContentType;
Session["File"] = fuAttachment.PostedFile.FileName;
Session["AttachmentProvided"] = "Yes";
}
else
{
Session["FileContent"] = "";
Session["FileContentType"] = "";
Session["File"] = "";
Session["AttachmentProvided"] = "No";
}
}
我的代码背后没有捕获所选的选项,但需要这样我才能在我的确认页面上显示它(如下所示的HTML)
<div class="form-group">
<asp:Label ID="Label6" class="col-xs-6 col-sm-3 control-label" runat="server" Text="Attachment provided:"></asp:Label>
<div class="col-xs-6 col-sm-9 form-control-static">
<% if (Session["AttachmentProvided"] == "Yes")
{%>
Yes (<%=Session["File"] %>)
<%}
else
{ %>
No
<%} %>
</div>
</div>
答案 0 :(得分:1)
您可以使用JavaScript向DOM添加其他<input type="file" />
元素,并通常使用MSDN中提到的Request.Files
引用所有文件。从MSDN获取的样本:
Files = Request.Files; // Load File collection into HttpFileCollection variable.
arr1 = Files.AllKeys; // This will get names of all files into a string array.
for (loop1 = 0; loop1 < arr1.Length; loop1++)
{
Response.Write("File: " + Server.HtmlEncode(arr1[loop1]) + "<br />");
Response.Write(" size = " + Files[loop1].ContentLength + "<br />");
Response.Write(" content type = " + Files[loop1].ContentType + "<br />");
}