文件上传

[老Key]

那位兄弟说一下不用js在后台实现多个文件的上传啊？？不是那样的带有填写几个new几个对象的，而是点击一下添加就出一个
fileuplode，谁能帮忙说下啊，谢谢啊

[wuyq11]

protected void btAddFile_Click(object sender, EventArgs e)
{
AddOneFileControl();
}

private void AddOneFileControl()
{
ArrayList al = new ArrayList();
this.tbFiles.Rows.Clear();
GetFileControlsFromSession();
HtmlTableRow htr = new HtmlTableRow();
HtmlTableCell htc = new HtmlTableCell();
htc.Controls.Add(new FileUpload());
htr.Controls.Add(htc);
this.tbFiles.Rows.Add(htr);
SaveCurrentPageFileControls();
}

private void GetFileControlsFromSession()
{
ArrayList al = new ArrayList();
if (Session["FilesControls"] != null)
{
al = (System.Collections.ArrayList)Session["FilesControls"];
for (int i = 0; i < al.Count; i++)
{
HtmlTableRow htr1 = new HtmlTableRow();
HtmlTableCell htc1 = new HtmlTableCell();
htc1.Controls.Add((System.Web.UI.WebControls.FileUpload)al[i]);
htr1.Controls.Add(htc1);
this.tbFiles.Rows.Add(htr1);
}
}
}


private void SaveCurrentPageFileControls()
{
ArrayList al = new ArrayList();
foreach (Control controlTR in this.tbFiles.Controls)
{
if (controlTR.GetType().ToString() == "System.Web.UI.HtmlControls.HtmlTableRow")
{
HtmlTableCell htc = (HtmlTableCell)controlTR.Controls[0];
foreach (Control controlFileUpload in htc.Controls)
{
if (controlFileUpload.GetType().ToString() == "System.Web.UI.WebControls.FileUpload")
{
FileUpload tempFileUpload = (FileUpload)controlFileUpload;
al.Add(tempFileUpload);
}
}
}
}
Session.Add("FilesControls", al);
}

protected void btUpFiles_Click(object sender, EventArgs e)
{
UpLoadFiles();
}

private void UpLoadFiles()
{
string filepath = Server.MapPath("./")+"UploadFiles";

HttpFileCollection uploadedFiles = Request.Files;
for (int i = 0; i < uploadedFiles.Count; i++)
{
HttpPostedFile userPostedFile = uploadedFiles[i];
try
{
if (userPostedFile.ContentLength > 0 )
{
userPostedFile.SaveAs(filepath + "\\" + System.IO.Path.GetFileName(userPostedFile.FileName));
Response.Write("已上传文件: \"" + filepath +"\\"+ userPostedFile.FileName +"\"<br><br>" );
}
}
catch
{
Response.Write("上传文件: \"" + userPostedFile.FileName +"\"出错!");
}
}
if (Session["FilesControls"] != null)
{
Session.Remove("FilesControls");
}
}
js多文件上传可看看参考

[wuyq11]

看看anyoffice，有JS多文件上传

[老Key]

呵呵，知道了， 的确是个table，但是当第一个FileUpload输入路径之后，再点击添加按钮，第一个输入的路径就刷没了，能在帮忙解决这个问题吗？也是对你代码的完善，希望1楼能帮忙解决，不盛感激。。。。。。。。。。

[老Key]

请问这个字段是什么意思啊？tbFiles

[cpp2017]

应该是个TABLE控件.

[老Key]

this.tbFiles.Rows.Clear();
程序报错说没有tbFiles，table是不可能了，因为table没法命名啊