In fact, there are very many ways, such as using Collection, ArrarList to collect the collection of files to upload, followed by one passage, using arrayliststylesheet.css.bluebutton {background-color: lightsteelblue; border-style: solId; border-width: 1px; border ! -color: LightSkyBlue;} attachme.aspx <% @ Page language = "c #" Codebehind = "attachme.aspx.cs" AutoEventWireup = "false" Inherits = "webchange.attachme"%> attachme </ title> <meta content =" Microsoft Visual Studio 7.0 "Name =" Generator "> <meta content =" c # "Name = "CODE_LANGUAGE"> <meta content = "JavaScript" name = "vs_defaultClientScript"> <meta content = "http://schemas.microsoft.com/intellisense/ie5" name = "vs_targetSchema"> <LINK href = "StyleSheet. CSS "rel =" stylesheet "> </ head> <body ms_positioning =" gridLayout "> <form id =" attachme "method =" post "encty =" multipart / form-data "runat =" server "> <input class = "BlueButton" id = "Findfile" style = "Z-Index: 101; Left: 36px; WIDT H: 274px; position: absolute; top: 123px; height: 22px "type =" file "size =" 26 "runat =" server "name =" findfile "> <asp: listbox id =" Listbox1 "style =" z -Index: 102; Left: 36px; Position: Absolute; Top: 149px "Runat =" Server "</p>
<p>CssClass = "txtbox" Height = "100px" width = "274px" font-size = "xx-small"> </ asp: listbox> <ask: button id = "style" style = "z-index: 103; Left : 34px; Position: absolute; top: 254px "runat =" server "cssclass =" bluebutton "height =" 23px "width =" 72px "text =" add "> </ ask: button> <ask: button ID =" Remvfile "style =" z-index: 104; Left: 119px; position: absolute; top: 255px "runat =" server "cssclass =" bluebutton "height =" 23px "width =" 72px "text =" remove "> < / asp: button> <input class = "bluebutton" id = "UPLOAD" style = "z-index: 105; Left: 236px; width: 71px; position: absolute; top: 254px; height: 24px" type = "Submit "Value =" Upload "runat =" server "onServerClick =" UPLOAD_SERVERCLICK "name =" Upload "> </ form> <ask: label id =" Label1 "style =" z-index: 106; Left: 46px; Position: Absolute; TOP: 326PX "Runat =" Server "Height =" 25px "width =" 249px "> </ asp: label> </ body> </ html> using system; using system.collections; using system.componentmodel; use meanstem. Data; use system.drawing; using system.web; using system.Web.SessionState; Using System.Web.ui;</p>
<p>Using system.Web.ui.webcontrols; using system.web.ui.htmlcontrols; using system.xml;</p>
<p>namespace webchange {/// <summary> /// attachme allows for multiple files to be uploaded to your web server while using /// only one HttpInputFile control and a listbox /// </ summary> public class attachme:. System. Web.UI.Page {protected System.Web.UI.WebControls.ListBox ListBox1; protected System.Web.UI.WebControls.Button AddFile; protected System.Web.UI.WebControls.Button RemvFile; protected System.Web.UI.HtmlControls .HtmlInputFile FindFile; protected System.Web.UI.HtmlControls.HtmlInputButton Upload; protected System.Web.UI.WebControls.Label Label1; protected System.Web.UI.HtmlControls.HtmlGenericControl txtOutput; public ArrayList files = new ArrayList (); static Public arraylist hif = new arraylist (); public int filesuploaded = 0; private void page_load (Object sender, system.eventargs e) {// put user code to initialize the page here} #Region Web Form Designer generated code override protected void oninit (Eventargs e) {//// Codegen: this call is required by the asp.net web form designer. // initializecomponent (); base.onit (e);} / // <summary> /// Required method for Designer support -. do not modify /// the contents of this method with the code editor /// </ summary> private void InitializeComponent () {this.RemvFile.Click = New system.eventhandler (this.remvfile_click; this.addfile.click = new system.eventhandler (this.addfile_click);</p>
<p>this.Upload.ServerClick = new System.EventHandler (this.Upload_ServerClick); this.Load = new System.EventHandler (this.Page_Load);} #endregion /// <summary> /// AddFile will add the path of The Client Side File That Is Currently in the /// PostedFile /// Property of The HttpinputFile Control to the listbox. /// </ summary> /// <param name = "sender"> </ param> ////////// <param name = "e"> </ param> private void addfile_click (object sender, system.eventargs e) {if (page.ispostback == true) {hif.add (findfile); listbox1.items.add (findfile. PostedFile.FileName);} else {}} /// <summary> /// Remvfile Will Remove the currently successd file from the listbox. /// </ summary> /// <parame = "sender"> </ Param> /// <param name = "e"> </ param> private void Remvfi Le_Click (Object Sender, System.Eventargs E) {if (ListBox1.Items.count! = 0) {hif.removeat (listbox1.selected "; listbox1.items.remove (listbox1.selectedItem.text);}} //// <summary> /// Upload_serverclick is the server side script this will upload the files to ////////// </ summary> /// <param name = "Sender"> </ param> /// <param name = "e"></p>
<p></ param> public void upload_serverclick (object sender, system.eventargs e) {string baselocation = "c: // temp //"; string status = ""; if ((ListBox1.Items.count == 0) && filesUploaded == 0)) {Label1.Text = ". Error - a file name must be specified"; return;} else {foreach (System.Web.UI.HtmlControls.HtmlInputFile HIF in hif) {try {string fn = System .Io.postedfile.filename; HIF.POSTEDFILE.SAVEAS (Baselocation Fn); FileSuploaded ; Status = fn "<br>";} catch (exception err) {label1.text = " ERROR SAVING FILE " BaseLocation "<br>" Err.Tostring ();}} if (filesuploaded == hifi (filesuploaded == hifi ") {label1.text =" FileSuploaded "File (s) WERE" "UPLOADED: <br>" Hif.clear (); listbox1.items.clear ();}}}}</p></div><div class="text-center mt-3 text-grey">
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