How to find "upload control" only get the current user control instead of the entire page

goagassi

CS:
HttpFileCollection files = HttpContext.Current.Request.Files;
try
{
  for (int iFile = 0; iFile <files.Count; iFile ++)
  {
    HttpPostedFile postedFile = files [iFile];
    string fileName, fileExtension;
    fileName = System.IO.Path.GetFileName (postedFile.FileName);
    ...
  }
}
ASPS:
<INPUT id = "upfile" type = "file" name = "File" runat = "server">
This is the user control
But when I add multiple user controls to my page, the above code will also upload upload controls for other user controls.

How can i change
HttpFileCollection files = HttpContext.Current.Request.Files;
Cheng will only get the current user control instead of the "file" control for the entire page

shenmue024

1. According to the control name, use FindControls to find.

2. Cycle through all the child controls according to the parent control. For example: put a Panel in the current user control and then cycle its child controls.

Request is the same object for the entire page, so Request.Files cannot be used directly

goagassi

HttpContext.Current.Request.Files[this.upfile.ClientID];
Originally I thought the name in this collection would not work

goagassi

(HttpFileCollection)this.FindControl("upfile");
This method of doing HttpFileCollection is not a server control

shenmue024

You can also do this.


foreach(string sFileControl in Request.Files)
{
if(sFileControl.IndexOf(this.ClientID.ToString())>-1)
{
//Indicates that this control is its own.
}
}

goagassi

HttpFileCollection files = HttpContext.Current.Request.Files;
try
{
for(int iFile = 0; iFile <files.Count; iFile++)
{
foreach(string sFileControl in files)
{
if(sFileControl.IndexOf(upfile.ClientID.ToString())>-1)
{
HttpPostedFile postedFile = files[iFile];
Will not work

goagassi

HttpFileCollection files = HttpContext.Current.Request.Files;
try
{
  for(int iFile = 0; iFile <files.Count; iFile++)
  {
    foreach(string sFileControl in files)
    {
      if(sFileControl.IndexOf(upfile.ClientID.ToString())>-1)
      {
HttpPostedFile postedFile = files[iFile];
         ....