我有一个文件上传控件。现在点击它，我想选择多个文件。
我该怎么做？
问问题
149689 次
11 回答
48
.NET 4.5 及更高版本中的FileUpload.AllowMultiple属性将允许您控制选择多个文件。
<asp:FileUpload ID="fileImages" AllowMultiple="true" runat="server" />
.NET 4 及以下
<asp:FileUpload ID="fileImages" Multiple="Multiple" runat="server" />
在回发时，您可以：
Dim flImages As HttpFileCollection = Request.Files
For Each key As String In flImages.Keys
Dim flfile As HttpPostedFile = flImages(key)
flfile.SaveAs(yourpath & flfile.FileName)
Next
于 2013-07-03T07:24:05.450 回答
29
这是如何使用文件上传控件在 asp.net 中选择和上传多个文件的完整示例....
在 .aspx 文件中编写此代码..
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server" enctype="multipart/form-data">
<div>
<input type="file" id="myfile" multiple="multiple" name="myfile" runat="server" size="100" />
<br />
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
<br />
<asp:Label ID="Span1" runat="server"></asp:Label>
</div>
</form>
</body>
</html>
之后在 .aspx.cs 文件中编写此代码..
protected void Button1_Click(object sender,EventArgs e) {
string filepath = Server.MapPath("\\Upload");
HttpFileCollection uploadedFiles = Request.Files;
Span1.Text = string.Empty;
for(int i = 0;i < uploadedFiles.Count;i++) {
HttpPostedFile userPostedFile = uploadedFiles[i];
try {
if (userPostedFile.ContentLength > 0) {
Span1.Text += "<u>File #" + (i + 1) + "</u><br>";
Span1.Text += "File Content Type: " + userPostedFile.ContentType + "<br>";
Span1.Text += "File Size: " + userPostedFile.ContentLength + "kb<br>";
Span1.Text += "File Name: " + userPostedFile.FileName + "<br>";
userPostedFile.SaveAs(filepath + "\\" + Path.GetFileName(userPostedFile.FileName));
Span1.Text += "Location where saved: " + filepath + "\\" + Path.GetFileName(userPostedFile.FileName) + "<p>";
}
} catch(Exception Ex) {
Span1.Text += "Error: <br>" + Ex.Message;
}
}
}
}
在这里你去......你的多文件上传控制已经准备好了......祝你有快乐的一天。
于 2013-08-27T05:52:48.360 回答
7
aspx code
<asp:FileUpload ID="FileUpload1" runat="server" AllowMultiple="true" />
<asp:Button ID="btnUpload" Text="Upload" runat="server" OnClick ="UploadMultipleFiles" accept ="image/gif, image/jpeg" />
<hr />
<asp:Label ID="lblSuccess" runat="server" ForeColor ="Green" />
Code Behind:
protected void UploadMultipleFiles(object sender, EventArgs e)
{
foreach (HttpPostedFile postedFile in FileUpload1.PostedFiles)
{
string fileName = Path.GetFileName(postedFile.FileName);
postedFile.SaveAs(Server.MapPath("~/Uploads/") + fileName);
}
lblSuccess.Text = string.Format("{0} files have been uploaded successfully.", FileUpload1.PostedFiles.Count);
}
于 2015-09-23T04:47:27.407 回答
4
第 1 步：添加
<asp:FileUpload runat="server" id="fileUpload1" Multiple="Multiple">
</asp:FileUpload>
第2步：添加
Protected Sub uploadBtn_Click(sender As Object, e As System.EventArgs) Handles uploadBtn.Click
Dim ImageFiles As HttpFileCollection = Request.Files
For i As Integer = 0 To ImageFiles.Count - 1
Dim file As HttpPostedFile = ImageFiles(i)
file.SaveAs(Server.MapPath("Uploads/") & ImageFiles(i).FileName)
Next
End Sub
于 2014-06-23T00:13:37.953 回答
2
您还可以使用其他选项，这些控件具有多个上传选项，并且这些控件还支持 Ajax
1) Flajxian
2) Valums
3) Subgurim FileUpload
于 2013-07-03T07:44:24.887 回答
2
default.aspx 代码
<asp:FileUpload runat="server" id="fileUpload1" Multiple="Multiple">
</asp:FileUpload>
<asp:Button runat="server" Text="Upload Files" id="uploadBtn"/>
默认.aspx.vb
Protected Sub uploadBtn_Click(sender As Object, e As System.EventArgs) Handles uploadBtn.Click
Dim ImageFiles As HttpFileCollection = Request.Files
For i As Integer = 0 To ImageFiles.Count - 1
Dim file As HttpPostedFile = ImageFiles(i)
file.SaveAs(Server.MapPath("Uploads/") & file.FileName)
Next
End Sub
于 2014-02-23T05:29:36.503 回答
1
要添加多个文件，请使用以下代码
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<style type="text/css">
.fileUpload{
width:255px;
font-size:11px;
color:#000000;
border:solid;
border-width:1px;
border-color:#7f9db9;
height:17px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<div id="fileUploadarea"><asp:FileUpload ID="fuPuzzleImage" runat="server" CssClass="fileUpload" /><br /></div><br />
<div><input style="display:block;" id="btnAddMoreFiles" type="button" value="Add more images" onclick="AddMoreImages();" /><br />
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Upload" />
</div>
</div>
<script language="javascript" type="text/javascript">
function AddMoreImages() {
if (!document.getElementById && !document.createElement)
return false;
var fileUploadarea = document.getElementById("fileUploadarea");
if (!fileUploadarea)
return false;
var newLine = document.createElement("br");
fileUploadarea.appendChild(newLine);
var newFile = document.createElement("input");
newFile.type = "file";
newFile.setAttribute("class", "fileUpload");
if (!AddMoreImages.lastAssignedId)
AddMoreImages.lastAssignedId = 100;
newFile.setAttribute("id", "FileUpload" + AddMoreImages.lastAssignedId);
newFile.setAttribute("name", "FileUpload" + AddMoreImages.lastAssignedId);
var div = document.createElement("div");
div.appendChild(newFile);
div.setAttribute("id", "div" + AddMoreImages.lastAssignedId);
fileUploadarea.appendChild(div);
AddMoreImages.lastAssignedId++;
}
</script>
</form>
</body>
</html>
服务器端代码：
try
{
HttpFileCollection hfc = Request.Files;
for (int i = 0; i < hfc.Count; i++)
{
HttpPostedFile hpf = hfc[i];
if (hpf.ContentLength > 0)
{
hpf.SaveAs(Server.MapPath("~/uploads/") +System.IO.Path.GetFileName(hpf.FileName);
}
}
}
catch (Exception)
{
throw;
}
于 2015-06-02T18:12:58.883 回答
1
.NET 4.5 及更高版本中的 FileUpload.AllowMultiple 属性将允许您控制选择多个文件。
在 4.5 以下，如 4.0（vs 2010），我们可以使用 jquery 在单个控件中进行多个文件上传，使用 2 个 js 文件： http ://code.jquery.com/jquery-1.8.2.js和http://code。 google.com/p/jquery-multifile-plugin/
在 aspx 文件上传标签中，添加类似 class="multi"
<asp:FileUpload ID="FileUpload1" class="multi" runat="server" />
如果您想要工作示例，请转到链接下载示例。
于 2016-02-19T06:13:22.290 回答
0
你可以试试下面的代码：
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Try
Dim j As Integer = 0
Dim hfc As HttpFileCollection = Request.Files
Dim PathName As String
For i As Integer = 0 To hfc.Count - 1
Dim hpf As HttpPostedFile = hfc(i)
If hpf.ContentLength > 0 Then
hpf.SaveAs(Server.MapPath("~/E:\") & System.IO.Path.GetFileName(hpf.FileName))
PathName = Server.MapPath(hpf.FileName)
If j < hfc.Count Then
Dim strConnString As String = ConfigurationManager.ConnectionStrings("conString").ConnectionString
Dim sqlquery As String
sqlquery = "Insert_proc"
Dim con As New SqlConnection(strConnString)
Dim cmd As New SqlCommand(sqlquery, con)
cmd.CommandType = CommandType.StoredProcedure
cmd.Parameters.Add("@FilePath", SqlDbType.VarChar).Value = PathName
j = j + 1
Try
con.Open()
cmd.ExecuteNonQuery()
Catch ex As Exception
Throw ex
Finally
con.Close()
con.Dispose()
End Try
If j = hfc.Count Then
Exit Sub
End If
End If
End If
Next
Catch generatedExceptionName As Exception
Throw
End Try
End Sub
于 2013-12-26T05:39:46.183 回答
0
如果您使用的是 .Net 4.5（在较低版本中不支持此功能），我刚刚遇到了这个非常简单的解决方案，您可以使用 jQuery 使事情变得非常简单和轻松。
在 ASP.Net 4.5 中使用 jQuery 和通用处理程序上传多个文件
当然还有经典 ASP 的商业版本，可以在ASP Uploader找到
于 2014-02-13T10:16:26.610 回答
-3
为什么不使用 flash 和 javascript 上传控制？
于 2013-07-03T10:07:54.487 回答