Asp.net implements Multifile upload C #

C # version

UpLoad. aspx

& Lt; % @ Page language = & quot; c # & quot; Codebehind = & quot; UpLoad. aspx. cs & quot; AutoEventWireup = & quot; false & quot; Inherits = & quot; WebPortal. upload & quot; % & gt; & lt ;! Doctype html public & quot;-// W3C // dtd html 4.0 Transitional // EN & quot; & gt; & lt; HTML & gt; & lt; HEAD & gt; & lt; title & gt; Multifile upload & lt;/title & gt; & lt; script language = & quot; JavaScript & quot; & gt; function addFile () {var str = '& lt; INPUT type = & quot; file & quot; size = & quot; 50 & quot; NAME = & quot; File & quot; & gt; 'document. getElementById ('myfile '). insertAdjacentHTML (& quot; beforeEnd & quot;, str)} & lt;/script & gt; & lt;/HEAD & gt; & lt; body & gt; & lt; form id = & quot; form1 & quot; method = & quot; post & quot; runat = & quot; server & quot; enctype = & quot; multipart/form-data & quot; & gt; & lt; div align = & quot; center & quot; & gt; & lt; h3 & gt; Multifile upload & lt; /h3 & gt; & lt; P id = & quot; MyFile & quot; & gt; & lt; INPUT type = & quot; file & quot; size = & quot; 50 & quot; NAME = & quot; File & quot; & gt; & lt;/P & gt; & lt; input type = & quot; button & quot; value = & quot; Add & quot; onclick = & quot; addFile () & quot; & gt; & lt; input onclick = & quot; this. form. reset () & quot; type = & quot; button & quot; value = & quot; ReSet (reset) & quot; & gt; & lt; asp: button Runat = & quot; server & quot; Text = & quot; Start upload & quot; ID = & quot; UploadButton & quot; & gt; & lt;/asp: button & gt; & lt;/P & gt; & lt; asp: Label id = & quot; strStatus & quot; runat = & quot; server & quot; Font-Names = & quot; & quot; Font-Bold = & quot; True & quot; Font-Size = & quot; 9pt & quot; width = & quot; 500px & quot; BorderStyle = & quot; None & quot; BorderColor = & quot; White & quot; & gt; & lt;/asp: Label & gt; & lt;/P & gt; & lt;/div & gt; & lt;/form & gt; & lt;/body & gt; & lt;/HTML & gt;

UpLoad. aspx. cs

Using System; using System. collections; using System. componentModel; using System. data; using System. drawing; using System. web; using System. web. sessionState; using System. web. UI; using System. web. UI. webControls; using System. web. UI. htmlControls; namespace WebPortal {// & lt; summary & gt; // summary of UpLoad. /// Multifile Upload /// & lt;/summary & gt; public class Upload: System. web. UI. page {protected System. web. UI. webControls. button UploadButton; protected System. web. UI. webControls. label strStatus; private void Page_Load (object sender, System. eventArgs e) {// place user code here to initialize the page if (this. isPostBack) this. saveImages ();} private Boolean SaveImages () {// 'traverse the File form Element HttpFileCollection files = HttpContext. current. request. files; /// 'Status information System. text. stringBuilder strMsg = new System. text. stringBuilder (); strMsg. append (& quot; uploaded files are: & lt; hr color = red & gt; & quot;); try {for (int iFile = 0; iFile & lt; files. count; iFile ++) {// 'check the file extension name HttpPostedFile postedFile = files [iFile]; string fileName, fileExtension; fileName = System. IO. path. getFileName (postedFile. fileName); if (fileName! = & Quot;) {fileExtension = System. IO. path. getExtension (fileName); strMsg. append (& quot; type of the uploaded file: & quot; + postedFile. contentType. toString () + & quot; & lt; br & gt; & quot;); strMsg. append (& quot; client file address: & quot; + postedFile. fileName + & quot; & lt; br & gt; & quot;); strMsg. append (& quot; file name to be uploaded: & quot; + fileName + & quot; & lt; br & gt; & quot;); strMsg. append (& quot; File Upload Extension: & quot; + fileExtension + & quot; & lt; br & gt; & lt; hr & g T; & quot;); // 'can be saved to different folders according to the extension name. // Note: you may need to modify the anonymous write permission of your folder. PostedFile. saveAs (System. web. httpContext. current. request. mapPath (& quot; images/& quot;) + fileName) ;}} strStatus. text = strMsg. toString (); return true;} catch (System. exception Ex) {strStatus. text = Ex. message; return false ;}# code generated by region Web forms designer override protected void OnInit (EventArgs e) {// CODEGEN: ASP.. NET Web form designer. // InitializeComponent (); base. onInit (e) ;}/// & lt; summary & gt; // The designer supports the required methods-do not use the code editor to modify the content of this method. /// & Lt;/summary & gt; private void InitializeComponent () {this. ID = & quot; Upload & quot; this. load + = new System. eventHandler (this. page_Load) ;}# endregion }}