This class encapsulates an uploaded file and provides methods and properties for manipulation with it.
Namespace:
EasyAlgo.EAUploadAssembly: EasyAlgo.EAUpload (in EasyAlgo.EAUpload.dll)
Version: 1.3.2.0
Syntax
| C# |
|---|
public class UploadedFile |
| Visual Basic (Declaration) |
|---|
Public Class UploadedFile |
Remarks
It is designed to supplement the functionality of the System.Web..::.HttpPostedFile class and provides access to individual files that have been uploaded by a client.
You cannot create an instance of this class with the new keyword. You can obtain it by referencing an item within the Upload..::.UploadedFiles collection of an EasyAlgo.EAUpload..::.Upload object.
You cannot create an instance of this class with the new keyword. You can obtain it by referencing an item within the Upload..::.UploadedFiles collection of an EasyAlgo.EAUpload..::.Upload object.
Examples
The following code example demonstrates how to save the uploaded file and retrieve information about it.
CopyC#
CopyVB.NET
// UploadFile.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; using EasyAlgo.EAUpload; namespace EAUploadExamples { public class UploadFile : System.Web.UI.Page { protected System.Web.UI.WebControls.Button Button1; protected System.Web.UI.WebControls.Label lblResponse; private void Page_Load(object sender, System.EventArgs e) { } #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.OnInit(e); } private void InitializeComponent() { this.Button1.Click += new System.EventHandler(this.Button1_Click); this.Load += new System.EventHandler(this.Page_Load); } #endregion private void Button1_Click(object sender, System.EventArgs e) { lblResponse.Text = ""; Upload _upload = UploadsManager.GetUpload(); // Define directory to which an uploaded files will be stored. string SaveFolder = Server.MapPath("") + "\\UploadedFiles\\"; if (_upload != null && _upload.Status.State == UploadState.Complete) { // Iterate through uploaded files collection. for (int i = 0; i < _upload.UploadedFiles.Count; i++) { UploadedFile _file = _upload.UploadedFiles[i]; // Save an uploaded file to a specific location // with name that was been on the client's machine. // You can save an uploaded file with any name. // To do that, just specify the required name in "path" parameter of SaveAs method. _file.SaveAs(SaveFolder + _file.QualifiedFileName, true); // Fill the response lable lblResponse.Text += "File uploaded successfully: <br />"; lblResponse.Text += "File was saved as: " + _file.StoredFileName + "<br />"; lblResponse.Text += "Client file name: " + Server.HtmlEncode(_file.ClientFileName) + "<br />"; lblResponse.Text += "Content type: " + _file.ContentType + "<br />"; lblResponse.Text += "File size: " + _file.ContentLength + "<br /><br />"; } // Retrieve a value of text field from form fields collection // (You can use also Request.Form property to retrieve a value of form field). // Use HttpServerUtility.HtmlEncode method when you display data that is inputted by the user. // It allows you to prevent cross-site scripting attacks. lblResponse.Text += "Comment: " + Server.HtmlEncode(_upload.FormElements["comment"]) + "<br /><br />"; if (_upload.UploadedFiles.Count == 0) { lblResponse.Text += "You doesn't selected any file."; } } else { lblResponse.Text += "Upload is unsuccessful! <br />"; if (_upload != null && _upload.LastError != null) { lblResponse.Text += "Upload state: " + _upload.Status.State.ToString() + "<br />"; lblResponse.Text += "An error was occurred: " + _upload.LastError.Message; } } } } } // -------------------------------------------------- // UploadFile.aspx <%@ Page language="c#" Codebehind="UploadFile.aspx.cs" AutoEventWireup="false" Inherits="EAUploadExamples.UploadFile" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" > <HTML> <HEAD> <title>Upload to the same page.</title> <link rel="stylesheet" href="ExamplesStyle.css"> </HEAD> <body> This example demonstrates how to upload file to the same page by handling a button click event. Code for files processing is located in codebehind file. <br> <br> <form id="Form1" method="post" runat="server" enctype="multipart/form-data"> <table style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none"> <tbody> <tr> <td>Select file 1:</td> <td><input type="file" name="file1" size="40" id="file1"></td> </tr> <tr> <td>Select file 2:</td> <td><input type="file" name="file2" size="40" id="file2"></td> </tr> <tr> <td>Comment:</td> <td><input type="text" name="comment"></td> </tr> <tr> <td> </td> <td> <asp:Button id="Button1" runat="server" Width="80px" Text="Upload"></asp:Button> </td> </tr> </tbody> </table> <br> <asp:Label id="lblResponse" runat="server"></asp:Label> </form> </body> </HTML>
' UploadFile.aspx.vb Imports System Imports System.Web Imports System.Web.UI Imports EasyAlgo.EAUpload Public Class UploadFile Inherits System.Web.UI.Page #Region " Web Form Designer Generated Code " 'This call is required by the Web Form Designer. <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() End Sub Protected WithEvents Button1 As System.Web.UI.WebControls.Button Protected WithEvents lblResponse As System.Web.UI.WebControls.Label 'NOTE: The following placeholder declaration is required by the Web Form Designer. 'Do not delete or move it. Private designerPlaceholderDeclaration As System.Object Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init 'CODEGEN: This method call is required by the Web Form Designer 'Do not modify it using the code editor. InitializeComponent() End Sub #End Region Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 'Put user code to initialize the page here End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click lblResponse.Text = "" Dim _upload As Upload = UploadsManager.GetUpload ' Define directory to which an uploaded files will be stored. Dim SaveFolder As String = Server.MapPath("") & "\UploadedFiles\" If ((Not _upload Is Nothing) AndAlso (_upload.Status.State = UploadState.Complete)) Then Dim i As Integer ' Iterate through uploaded files collection. For i = 0 To _upload.UploadedFiles.Count - 1 Dim _file As UploadedFile = _upload.UploadedFiles.Item(i) ' Save an uploaded file to a specific location ' with name that was been on the client's machine. ' You can save an uploaded file with any name. ' To do that, just specify the required name in "path" parameter of SaveAs method. _file.SaveAs(SaveFolder & _file.QualifiedFileName, True) ' Fill the response lable lblResponse.Text &= "File uploaded successfully: <br />" lblResponse.Text &= "File was saved as: " & _file.StoredFileName & "<br />" lblResponse.Text &= "Client file name: " & Server.HtmlEncode(_file.ClientFileName) & "<br />" lblResponse.Text &= "Content type: " & _file.ContentType & "<br />" lblResponse.Text &= "File size: " & _file.ContentLength & "<br /><br />" Next i ' Retrieve a value of text field from form fields collection ' (You can use also Request.Form property to retrieve a value of form field). ' Use HttpServerUtility.HtmlEncode method when you display data that is inputted by the user. ' It allows you to prevent cross-site scripting attacks. lblResponse.Text &= "Comment: " & Server.HtmlEncode(_upload.FormElements.Item("comment")) & "<br /><br />" If (_upload.UploadedFiles.Count = 0) Then lblResponse.Text &= "You doesn't selected any file." End If Else lblResponse.Text &= "Upload is unsuccessful! <br />" If ((Not _upload Is Nothing) AndAlso (Not _upload.LastError Is Nothing)) Then lblResponse.Text &= "Upload state: " & _upload.Status.State.ToString & "<br />" lblResponse.Text &= "An error was occurred: " & _upload.LastError.Message End If End If End Sub End Class ' -------------------------------------------------- ' UploadFile.aspx <%@ Page language="vb" Codebehind="UploadFile.aspx.vb" AutoEventWireup="false" Inherits="EAUploadExamples.WebForm1" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" > <HTML> <HEAD> <title>File upload example.</title> <link rel="stylesheet" href="ExamplesStyle.css"> </HEAD> <body> This example demonstrates how to upload file to the same page by handling a button click event. Code for files processing is located in codebehind file. <br> <br> <form id="Form1" method="post" runat="server" enctype="multipart/form-data"> <table style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none"> <tbody> <tr> <td>Select file 1:</td> <td><input type="file" name="file1" size="40" id="file1"></td> </tr> <tr> <td>Select file 2:</td> <td><input type="file" name="file2" size="40" id="file2"></td> </tr> <tr> <td>Comment:</td> <td><input type="text" name="comment"></td> </tr> <tr> <td> </td> <td> <asp:Button id="Button1" runat="server" Width="80px" Text="Upload"></asp:Button> </td> </tr> </tbody> </table> <br> <asp:Label id="lblResponse" runat="server"></asp:Label> </form> </body> </HTML>
