When uploading a photo to my server using the following code, I'm receiving an erroneous value. This is working fine in the debug mode and when published in localhost.
string filePath = Path.Combine(HttpContext.Server.MapPath("../Uploads"), date);
if (!Directory.Exists(HttpContext.Server.MapPath("../Uploads")))
{
Directory.CreateDirectory(HttpContext.Server.MapPath("../Uploads"));
}
file.SaveAs(filePath);
Can someone please point out what I've done incorrectly?
ok I am assuming that you are using File Upload control or you can use the below sample code if you want to use the FileUpload control in your asp.net page.
Add the FileUpload control (Here im adding ajax async FileUpload control and named as asyncFileUpload.
Write A Method and Call it whenever you want.
public int AsyncFileUpload()
{
string xlsFile = AsyncFileUpload1.FileName;
if (AsyncFileUpload1.HasFile)
{
string FileName = Path.GetFileName(AsyncFileUpload1.PostedFile.FileName);
string Extension = Path.GetExtension(AsyncFileUpload1.PostedFile.FileName);
string FilePath = Server.MapPath("~/Uploads/" + FileName);
if (Extension == ".doc")//check the file extension here
{
AsyncFileUpload1.SaveAs(FilePath);
}
}
}
Related
I am trying to read an Excel sheet using C# which is to be loaded by end user from fileUpload control.
I am writing my code to save the file on server in event handler of another button control(Upload). But when I click on Upload Button I am getting this exception:
The process cannot access the file 'E:\MyProjectName\App_Data\sampledata.xlsx' because it is being used by another process.
Here is the code that I have used in event handler:
string fileName = Path.GetFileName(file_upload.PostedFile.FileName);
string fileExtension = Path.GetExtension(file_upload.PostedFile.FileName);
string fileLocation = Server.MapPath("~/App_Data/" + fileName);
//if (File.Exists(fileLocation))
// File.Delete(fileLocation);
file_upload.SaveAs(fileLocation);
Even deleting the file is not working, throwing the same exception.
Make sure, some other process is not accessing that file.
This error might occurs whenever you are trying to upload file, without explicitly removing it from memory.
So try this:
try
{
string fileName = Path.GetFileName(file_upload.PostedFile.FileName);
string fileExtension = Path.GetExtension(file_upload.PostedFile.FileName);
string fileLocation = Server.MapPath("~/App_Data/" + fileName);
//if (File.Exists(fileLocation))
// File.Delete(fileLocation);
file_upload.SaveAs(fileLocation);
}
catch (Exception ex)
{
throw ex.Message;
}
finally
{
file_upload.PostedFile.InputStream.Flush();
file_upload.PostedFile.InputStream.Close();
file_upload.FileContent.Dispose();
//Release File from Memory after uploading
}
The references are hanging in memory, If you are using Visual Studio try with Clean Solution and Rebuild again, if you are in IIS, just do a recycle of your application.
To avoid this problems try to dispose the files once you used them, something like:
using(var file= new FileInfo(path))
{
//use the file
//it will be automatically disposed after use
}
If i have understood the scenario properly.
For Upload control, I don't think you have to write code for Upload Button. When you click on your button,your upload control has locked the file and using it so it is already used by one process. Code written for button will be another process.
Prior to this, check whether your file is not opened anywhere and pending for edit.
I am using ISAPI rewrite on a project and would like to know if it is possible to publish a .htaccess file from Tridion?
I have tried creating a Page Template with the .htaccess extension but can't create a page with no name.
Any ideas?
Could I use a C# TBB to change the page name?
I would also choose to use a binary to achieve this, but if you want to manage the htaccess file using text, rather than as a multimedia component, you can push a binary into your package using the following technique:
1) Push the text of the Htaccess file into the package with an accessible name (i.e. Binary_Text)
2) Use code similar to the following to create a text file from the text in the variable and add it to the package
class publishStringItemAsBinary : ITemplate
{
public void Transform(Engine engine, Package package)
{
TemplatingLogger log = TemplatingLogger.GetLogger(typeof(publishStringItemAsBinary));
TemplateUtilities utils = new TemplateUtilities();
System.IO.Stream inputStream = null;
try
{
string strInputName = package.GetValue("InputItem");
string strFileName = package.GetValue("strFileName");
string sg_Destination = package.GetValue("sg_Destination");
string itemComponent = package.GetValue("mm_Component");
inputStream = new MemoryStream(Encoding.UTF8.GetBytes(package.GetValue(strInputName)));
log.Debug("InputObject:" + strInputName);
log.Debug("Filename for binary:" + strFileName);
log.Debug("Destination StructureGroup:" + sg_Destination);
Publication contextPub = utils.getPublicationFromContext(package, engine);
TcmUri uriLocalSG = TemplateUtilities.getLocalUri(new TcmUri(contextPub.Id), new TcmUri(sg_Destination));
TcmUri uriLocalMMComp = TemplateUtilities.getLocalUri(new TcmUri(contextPub.Id), new TcmUri(itemComponent));
StructureGroup sg = (StructureGroup)engine.GetObject(uriLocalSG);
Component comp = (Component)engine.GetObject(uriLocalMMComp);
String sBinaryPath = engine.PublishingContext.RenderedItem.AddBinary(inputStream, strFileName, sg, "nav", comp, "text/xml").Url;
//Put a copy of the path in the package in case you need it
package.PushItem("BinaryPath", package.CreateStringItem(ContentType.Html, sBinaryPath));
}
catch (Exception e)
{
log.Error(e.Message);
}
finally
{
if (inputStream != null)
{
inputStream.Close();
}
}
}
}
I think the code is pretty self explanatory. This publishes a binary of type text/xml, but there should be no issue converting it to do a plain text file.
I think you can use multimedia component to store your .htaccess. Even if you will not be able to upload file without name (Windows limitation), you will be able to change filename later, by modifying BinaryContent.Filename property of multimedia component. You can then publish this component seperately, or use AddBinary method in one of your templates.
There's also a user schema where you can change some other rules: "\Tridion\bin\cm_xml_usr.xsd", but you will not be able to allow empty filenames
I have an ASP.NET MVC3 application and I want to link_to an image file (png, jpeg, gif, etc), and when user clicks on it, the file goes to download, instead of the browser shows it; is there any way to do this?
take your link something like this:
#Html.ActionLink(
"Download Image", // text to show
"Download", // action name
["DownloadManager", // if need, controller]
new { filename = "my-image", fileext = "jpeg" } // file-name and extension
)
and action-method is here:
public FilePathResult Download(string filename, string fileext) {
var basePath = Server.MapPath("~/Contents/Images/");
var fullPath = System.IO.Path.Combine(
basePath, string.Concat(filename.Trim(), '.', fileext.Trim()));
var contentType = GetContentType(fileext);
// The file name to use in the file-download dialog box that is displayed in the browser.
var downloadName = "one-name-for-client-file." + fileext;
return File(fullPath, contentType, downloadName);
}
private string GetContentType(string fileext) {
switch (fileext) {
case "jpg":
case "jpe":
case "jpeg": return "image/jpeg";
case "png": return "image/x-png";
case "gif": return "image/gif";
default: throw new NotSupportedException();
}
}
UPDATE:
in fact, when a file is sending to a browser, this key/value will be generated in http-header:
Content-Disposition: attachment; filename=file-client-name.ext
which file-client-name.ext is the name.extension that you want the file save-as it on client system; for example, if you want to do this in ASP.NET (none mvc), you can create a HttpHandler, write the file-stream to Response, and just add the above key/value to the http-header:
Response.Headers.Add("Content-Disposition", "attachment; filename=" + "file-client-name.ext");
just this, enjoy :D
Well technically your browser is downloading it.
I don't think you can directly link to an image, and have the browser prompt to download.
You could try something where instead of linking directly to the image, you link to a page, which serves up the image in a zip file perhaps - which of course would prompt the download to occur.
Yes, you can.
Now, you'll need to customize this to suit your needs, but I created a FileController that returned files by an identifier (you can easily return by name).
public class FileController : Controller
{
public ActionResult Download(string name)
{
// check the existence of the filename, and load it in to memory
byte[] data = SomeFunctionToReadTheFile(name);
FileContentResult result = new FileContentResult(data, "image/jpg"); // or whatever it is
return result;
}
}
Now, how you read that file or where you get it from is up to you. I then created a route like this:
routes.MapRoute(null, "files/{name}", new { controller = "File", action = "Download"});
My database has a map of identifiers to files (it's actually more complex than this, but I am omitting that logic for brevity), I can write urls like:
"~/files/somefile"
And the relevant file is downloaded.
I don't think this is possible but a simple message saying right click to save image would suffice I think.
I have an XML file which is being uploaded to an ASP.Net page via the normal file upload control. When it gets up, I am attempting to validate and deserialize the XML. However, the code below is really very handy for validating an XML file which references it's XSD like this:
xsi:schemaLocation="someurl ..\localSchemaPath.xsd"
However, if I upload this XML file, only the XML file gets uploaded, so ..\localSchemaPath.xsd doesn't exist, so it can't validate.
Even if I stored the XSD locally, it still wouldn't be quite right as the XML file could be written with a schema location like:
xsi:schemaLocation="someurl ..\localSchemaPath.xsd"
or
xsi:schemaLocation="someurl localSchemaPath.xsd"
or
xsi:schemaLocation="someurl ..................\localSchemaPath.xsd"
if it so wished.
Dilemma!
(For the purposes of this question, I have pinched the code below from: Validating an XML against referenced XSD in C#)
using System.Xml;
using System.Xml.Schema;
using System.IO;
public class ValidXSD
{
public static void Main()
{
// Set the validation settings.
XmlReaderSettings settings = new XmlReaderSettings();
settings.ValidationType = ValidationType.Schema;
settings.ValidationFlags |= XmlSchemaValidationFlags.ProcessInlineSchema;
settings.ValidationFlags |= XmlSchemaValidationFlags.ProcessSchemaLocation;
settings.ValidationFlags |= XmlSchemaValidationFlags.ReportValidationWarnings;
settings.ValidationEventHandler += new ValidationEventHandler(ValidationCallBack);
// Create the XmlReader object.
XmlReader reader = XmlReader.Create("inlineSchema.xml", settings);
// Parse the file.
while (reader.Read()) ;
}
// Display any warnings or errors.
private static void ValidationCallBack(object sender, ValidationEventArgs args)
{
if (args.Severity == XmlSeverityType.Warning)
Console.WriteLine("\tWarning: Matching schema not found. No validation occurred." + args.Message);
else
Console.WriteLine("\tValidation error: " + args.Message);
}
}
Here is a chunk of code I use to validate xml with a local schema:
string errors = string.Empty;
try
{
XmlSchemaSet schemas = new XmlSchemaSet();
schemas.Add(string.Empty, Page.MapPath("~/xml/Schema.xsd"));
XmlDocument doc = new XmlDocument();
doc.Schemas = schemas;
doc.Load(Page.MapPath("~/xml/sampleXML.xml"));
//use this line instead of the one above for a string in memory.
//doc.InnerXml = xmlToValidate;
ValidationEventHandler validator = delegate(object send, ValidationEventArgs ve)
{
errors += "\n" + ve.Severity + ": " + ve.Message;
};
doc.Validate(validator);
}
catch (XmlException xe)
{
errors += "\n" + xe.Message;
}
catch (XmlSchemaValidationException xe)
{
errors += "\n" + xe.Message;
}
I can't quite make out whether you are attempting a generic validate-against-any-referenced-schema, or if you have a specific schema that you validate against every time, and are just not sure how to handle the references.
If it's the latter, then make the schema public on the internet, and tell people to reference it by URI.
If it's the former, then I would suggest the following:
First the user uploads an XML file.
Parse the XML file for a schema reference. Tell them "References to yourSchema.xsd were found; please upload this file below" with a new upload box.
Then, validate the file against the uploaded schema. To do this, modify the Schemas property of your settings object, instead of modifying the ValidationFlags property.
I have a problem with using binary content of file. I want to pass web method content of file. I retriev it from fileupload control on my page via javascript function getAsBinary(). But error appears in web method, when I try to create example of class Image.
So, I have the page (.aspx) with fileupload control and scriptmanager. There are three javascript function:
// Get image from fileupload control and pass it in webmethod
function Get_image() {
var file_uploader = document.getElementById(file_uploader_name);
var file_content = file_uploader.files[0].getAsBinary();
imupcon.Get_image(file_content, OnRequestComplete, OnError);
}
// Successful execution
function OnRequestComplete(result) {alert(result);}
//Error execution
function OnError() { alert("Error!");}
And I have web-service with web-method:
[WebMethod]
public string Get_image(string file_content, string file_name)
{
byte[] data = Encoding.Unicode.GetBytes(file_content);
MemoryStream memStream = new MemoryStream();
memStream.Write(data, 0, data.Length);
//Error appears here
System.Drawing.Image image = System.Drawing.Image.FromStream(memStream);
memStream.Close();
return "Hurray!";
}
Does any have idea, what is reason? How I can pass content of file to web method? Thanks.
You don't need Encoding.Unicode.GetBytes if it's as it's already in binary. The data would be in unicode if you called files[0].getAsText("utf-8"). Please note that all of these methods are now obsolete and you should use feature detection and use the standard FileReader API if it is available.