ASP.NET Tutorial/HTML Controls/File upload
input type="file"
<script language="C#" runat="server">
protected void PhotoSubmit(object o, EventArgs e) {
if(thePhoto.PostedFile != null) {
try {
string filepath = "C:\\temp\\" + DateTime.Now.Ticks.ToString();
thePhoto.PostedFile.SaveAs(filepath);
status.Text = "File saved as " + filepath;
}
catch (Exception exc) {
status.Text = "An Error occurred processing the file. Please try again." + exc.ToString();
}
}
}
</script>
<form runat="server" enctype="multipart/form-data">
Please select an image to submit: <input id="thePhoto" type="file" runat="server"><br />
<input type="button" runat="server" value="Proceed" OnServerClick="PhotoSubmit" />
<asp:label runat="server" id="status" />
</form>
PostedFile.SaveAs
<%@ Page Language="C#" %>
<script runat="server">
void UploadButton_Click(Object sender, EventArgs e) {
if(FileInput.PostedFile != null)
{
try
{
FileInput.PostedFile.SaveAs("c:\\test.txt");
}
catch (Exception exc)
{
Response.Write(exc.Message);
}
}
}
</script>
<html>
<head>
</head>
<body>
<form id="Form1" method="post" enctype="multipart/form-data" runat="server">
<input id="FileInput" type="file" runat="server" />
<asp:Button id="UploadButton" onclick="UploadButton_Click" runat="server" Text="Upload"></asp:Button>
</form>
</body>
</html>
Use the HtmlInputFile control.
<%@ Page language="C#"%>
<%@ Import Namespace="System.IO" %>
<script runat="server">
void UploadButton_Click(object sender, EventArgs e)
{
string savePath = @"c:\";
if (!Directory.Exists(savePath)) {
string msg = "<h1>The upload path doesn"t exist: {0}</h1>";
Response.Write(String.Format(msg, savePath));
Response.End();
}
if (FileUpload1.PostedFile != null)
{
string fileName = Path.GetFileName(FileUpload1.Value);
savePath += fileName;
FileUpload1.PostedFile.SaveAs(savePath);
UploadStatusLabel.InnerText = "File saved as: <i>" + savePath + "</i>";
}
else
{
UploadStatusLabel.InnerText = "You did not specify a file to upload.";
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>HtmlInputFile</title>
</head>
<body>
<div id="pageContent">
<form ID="Form1" runat="server">
<h3>Select a picture to upload:</h3>
<hr />
<b>Picture to upload</b><br />
<input type="file" id="FileUpload1" runat="server" />
<br /><br />
<input runat="server" id="UploadButton" type="submit" value="Upload"
onserverclick="UploadButton_Click" />
<hr />
<span runat="server" id="UploadStatusLabel" />
</form>
</div>
</body>
</html>