ASP.Net/Components/File Upload
Содержание
File Upload Demo (C#)
<source lang="csharp">
<%@ Page language="c#" src="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="UploadFile.WebForm1" %> <HTML>
<body> <form id="Form1" enctype="multipart/form-data" method="post" runat="server"> <INPUT id="FileInput" style="Z-INDEX: 101; LEFT: 32px; WIDTH: 552px; POSITION: absolute; TOP: 24px; HEIGHT: 24px" type="file" size="72" name="File1" runat="server"> <asp:button id="cmdUpload" style="Z-INDEX: 102; LEFT: 32px; POSITION: absolute; TOP: 72px" runat="server" Text="Upload"></asp:button> <asp:Label id="lblInfo" style="Z-INDEX: 103; LEFT: 32px; POSITION: absolute; TOP: 128px" runat="server" Width="608px" Height="72px" Font-Names="Verdana" Font-Size="Medium" Font-Bold="True"></asp:Label></form> </body>
</HTML>
<%-- using System; using System.Collections; using System.ruponentModel; 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 System.IO; namespace UploadFile {
/// <summary> /// Summary description for WebForm1. /// </summary> public class WebForm1 : System.Web.UI.Page { protected System.Web.UI.WebControls.Button cmdUpload; protected System.Web.UI.WebControls.Label lblInfo; protected System.Web.UI.HtmlControls.HtmlInputFile FileInput; private void Page_Load(object sender, System.EventArgs e) { // Only accept image types. FileInput.Accept = "image/*"; } #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); } /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { this.cmdUpload.Click += new System.EventHandler(this.cmdUpload_Click); this.Load += new System.EventHandler(this.Page_Load); } #endregion private void cmdUpload_Click(object sender, System.EventArgs e) { if (FileInput.PostedFile.FileName == "") { lblInfo.Text = "No file specified."; } else { try { string serverFileName = Path.GetFileName(FileInput.PostedFile.FileName); //FileInput.PostedFile.SaveAs(@"c:\" + serverFileName); FileInput.PostedFile.SaveAs(MapPath(".") + serverFileName); lblInfo.Text = "File " + serverFileName; lblInfo.Text += " uploaded successfully."; } catch (Exception err) { lblInfo.Text = err.Message; } } } }
} --%>
</source>
File Uploading in ASP.NET (VB.net)
<source lang="csharp">
<%@ Page Language="vb" %> <html>
<head> <title>File Uploading in ASP.NET</title> <script runat="server"> Sub UploadBtn_Click(Sender as Object, e as EventArgs) If InStr(Request.ContentType, "multipart/form-data") Then Dim Counter1 As Integer Dim Keys() As String Dim Files As HttpFileCollection Files = Request.Files Keys = Files.AllKeys For Counter1 = 0 To Keys.GetUpperBound(0) Response.Write("File ID: " & Keys(Counter1) & "
") Response.Write("File Name/Path: " & Files(Counter1).FileName & "
") Next Counter1 Else Response.Write("No files uploaded, or wrong content type!") End If End Sub </script> </head>
<body> <form id="UploadForm" action="retrieveFiles.aspx" method="post" enctype="multipart/form-data" runat="server">
Select File To Upload to Server:
<input id="MyFile" type="file" runat="server">
<input id="MyFile2" type="file" runat="server">
<input type="submit" value="Upload!" onserverclick="UploadBtn_Click" runat="server" id="Submit1">
</form> </body> </html>
<%-- retrieveFiles.aspx <%@ Page Language="vb" %> <html>
<head> <title>File Uploading in ASP.NET</title> <script runat="server"> Sub Page_Load() If InStr(Request.ContentType, "multipart/form-data") Then Dim Counter1 As Integer Dim Keys() As String Dim Files As HttpFileCollection Files = Request.Files Keys = Files.AllKeys For Counter1 = 0 To Keys.GetUpperBound(0) Response.Write("File ID: " & Keys(Counter1) & "
") Response.Write("File Name/Path: " & Files(Counter1).FileName & "
") Next Counter1 Else Response.Write("No files uploaded, or wrong content type!") End If End Sub </script> </head>
<body>
</body>
</html>
--%>
</source>
Upload File control (C#)
<source lang="csharp">
<%@ Page Language="C#" %> <%@ Import Namespace="System.IO" %> <script runat="server">
protected void btnAdd_Click(object sender, EventArgs e) { if (upImage.HasFile) { if (CheckFileType(upImage.FileName)) { upImage.SaveAs(MapPath(upImage.FileName)); } } } bool CheckFileType(string fileName) { string ext = Path.GetExtension(fileName); switch (ext.ToLower()) { case ".gif": return true; case ".png": return true; case ".jpg": return true; case ".jpeg": return true; default: return false; } } void Page_PreRender() { string upFolder = MapPath("."); DirectoryInfo dir = new DirectoryInfo(upFolder); dlstImages.DataSource = dir.GetFiles(); dlstImages.DataBind(); }
</script> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server">
<title>FileUpload File</title>
</head> <body>
<form id="form1" runat="server">
<asp:Label id="lblImageFile" Text="Image File:" AssociatedControlID="upImage" Runat="server" /> <asp:FileUpload id="upImage" Runat="server" />
<asp:Button id="btnAdd" Text="Add Image" OnClick="btnAdd_Click" Runat="server" />
<asp:DataList id="dlstImages" RepeatColumns="3" runat="server"> <ItemTemplate> <asp:Image ID="Image1" ImageUrl="<%# Eval("Name", "./{0}") %>" style="width:200px" Runat="server" />
<%# Eval("Name") %> </ItemTemplate> </asp:DataList>
</form>
</body> </html>
</source>
Upload file to the server (VB.net)
<source lang="csharp">
<%@ Page Language=VB Debug=true %> <script runat=server> Sub SubmitButton_Click(Source As Object, e As EventArgs)
MyFile.PostedFile.SaveAs(txtFileSaveAs.Value) TheMessage.InnerHTML = "File uploaded!"
End Sub </SCRIPT> <HTML> <HEAD> <TITLE>Upload Sample Page</TITLE> </HEAD> <BODY> <form enctype="multipart/form-data" runat="server"> Enter the name and path of the file to upload: <input
id="MyFile" type="file" runat="server"
>
Enter the name only to save the file as:
<input
id="txtFileSaveAs" type="text" runat="server"
>
<input
runat="server" type=button value="Upload" OnServerClick="SubmitButton_Click"
> </Form> </BODY> </HTML>
</source>
Uploading Files with the HTML Input File Control (VB.net)
<source lang="csharp">
<%@ Page Language=VB Debug=true %> <script runat=server> Sub SubmitButton_Click(Source As Object, e As EventArgs) " Not working " Change the following folder as your settings " MyFile.PostedFile.SaveAs("./" & txtFileSaveAs.Value)
TheMessage.InnerHTML = "File uploaded!"
End Sub </SCRIPT> <HTML> <HEAD> <TITLE>Uploading Files with the HTMLInputFile Control</TITLE> </HEAD> <BODY> <form
enctype="multipart/form-data" runat="server">
Enter the name and path of the file to upload:
<input
id="MyFile" type="file" runat="server"
>
Enter the name only to save the file as:
<input
id="txtFileSaveAs" type="text" runat="server"
>
<input
runat="server" type=button value="Upload" OnServerClick="SubmitButton_Click"
> </Font> </Form> </BODY> </HTML>
</source>