c#上传文件并限制上传文件类型
2009-10-24 16:54
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<%@ Page Language="C#"
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0
Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
>
<script runat="server"
>
protected
void
UploadBtn_Click(object sender, EventArgs e)
{
// Specify
the path on the server to
// save
the uploaded file to.
string
savePath = @"c:/temp/uploads"
;
// Before
attempting to save the file, verify
// that
the FileUpload control contains a file.
if
(FileUpload1.HasFile)
{
// Get the name of the file to upload.
string
fileName =
Server.HtmlEncode(FileUpload1.FileName);
// Get the extension of the uploaded file.
string
extension = System.IO.Path.GetExtension(fileName);
// Allow only files with .doc or .xls extensions
// to be uploaded.
if
((extension == ".doc"
)
| (extension == ".xls"
))
{
// Append the name of the file to upload to the path.
savePath += fileName;
// Call the SaveAs method to save the
// uploaded file to the specified path.
// This example does not perform all
// the necessary error
checking.
// If a file with the same name
// already exists in the specified path,
// the uploaded file overwrites it.
FileUpload1.SaveAs(savePath);
// Notify the user that their file was successfully
uploaded.
UploadStatusLabel.Text = "Your file was
uploaded successfully."
;
}
else
{
// Notify the user why their file was not uploaded.
UploadStatusLabel.Text = "Your file was not
uploaded because "
+
"it does not have a .doc or .xls
extension."
; } } } </script> <html > <head runat="server"
>
<title>FileUpload Class Example</title>
</head>
<body>
<form id="form1"
runat="server"
>
<div>
<h4>Select a file to
upload:</h4>
<asp:FileUpload id="FileUpload1"
runat="server"
>
</asp:FileUpload>
<br/><br/>
<asp:Button id="UploadBtn"
Text="Upload file"
OnClick="UploadBtn_Click"
runat="server"
>
</asp:Button>
<hr />
<asp:Label id="UploadStatusLabel"
runat="server"
>
</asp:Label>
</div>
</form>
</body>
</html>
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0
Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
>
<script runat="server"
>
protected
void
UploadBtn_Click(object sender, EventArgs e)
{
// Specify
the path on the server to
// save
the uploaded file to.
string
savePath = @"c:/temp/uploads"
;
// Before
attempting to save the file, verify
// that
the FileUpload control contains a file.
if
(FileUpload1.HasFile)
{
// Get the name of the file to upload.
string
fileName =
Server.HtmlEncode(FileUpload1.FileName);
// Get the extension of the uploaded file.
string
extension = System.IO.Path.GetExtension(fileName);
// Allow only files with .doc or .xls extensions
// to be uploaded.
if
((extension == ".doc"
)
| (extension == ".xls"
))
{
// Append the name of the file to upload to the path.
savePath += fileName;
// Call the SaveAs method to save the
// uploaded file to the specified path.
// This example does not perform all
// the necessary error
checking.
// If a file with the same name
// already exists in the specified path,
// the uploaded file overwrites it.
FileUpload1.SaveAs(savePath);
// Notify the user that their file was successfully
uploaded.
UploadStatusLabel.Text = "Your file was
uploaded successfully."
;
}
else
{
// Notify the user why their file was not uploaded.
UploadStatusLabel.Text = "Your file was not
uploaded because "
+
"it does not have a .doc or .xls
extension."
; } } } </script> <html > <head runat="server"
>
<title>FileUpload Class Example</title>
</head>
<body>
<form id="form1"
runat="server"
>
<div>
<h4>Select a file to
upload:</h4>
<asp:FileUpload id="FileUpload1"
runat="server"
>
</asp:FileUpload>
<br/><br/>
<asp:Button id="UploadBtn"
Text="Upload file"
OnClick="UploadBtn_Click"
runat="server"
>
</asp:Button>
<hr />
<asp:Label id="UploadStatusLabel"
runat="server"
>
</asp:Label>
</div>
</form>
</body>
</html>
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