Open A File From A MemoryStream?
Aug 3, 2010Is it possible to open a file from a MemoryStream?What is really important is that i do not want to save the file to disk first.
View 3 RepliesIs it possible to open a file from a MemoryStream?What is really important is that i do not want to save the file to disk first.
View 3 RepliesI have a function that downloads an image from a DB, saves it to a Temp directory and passes the string back to an app that opens it. Ran fine with .NET 2.0, but throws a variety of exceptions in .NET 4.0. (like System.AccessViolationException was unhandled).It somehow seems to relate to the saved file still being locked.
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When i try to open a csv file from my asp.net 3.5 app by clicking on the link provided, a file download dialog box appears.When i click on the open button from there , i get this eror
C:Documents and settingsUserNameLocal SettingsTemporary Internet FilesContent.IE5X9TXTM06myfilename.csv could not be found .Check the spelling of the file name and verify that the file locationis correct?
Wjy am i getting this error? I am trying to open a file and it complains about file not found in the Temporary Internet Folder.I tried deleting the temp intrnet files.Dint work.I have IE 7 on xp professional sp3. Also i am streaming the file from the application. This happens only to some files and the rest of the files , i can open .
I have created a pdf file using aspose and need to open it without saving the pdf.Is it possible.
View 1 RepliesI am trying to open a file share link from the window.open ... but its adding the http://localhost/vdir/ before the path can any one say what is the problem?
View 1 RepliesWhen the user clicks on "OPEN" button, It should open up that(.txt) file which is on the file server in ReadWrite Mode (like in notepad) without any Access Issues.
Or simply has to be openend as temporary READONLY .Txt File. So that the user can close after viewing it.
olowing: response.BinaryWrite(myStream.ToArray());response.End();ser gets saving dialog and he can chose to save file or to cancel saving. But, problem is that can't continue to run code if user chooses to cancel download or, if he chooses to save file. I want to call another method afther that to update some tables in database, but I can`t do this.
View 1 RepliesIm generating a PDF file. Normally I send this to the user using a .ashx file, where the user can directly download it from his browser (see that code below).
Protected Function getfile() As MemoryStream
Dim stream As MemoryStream = New MemoryStream
If document.PageCount > 0 Then
document.Save(stream, False)
'Context.Response.Clear()
'Context.Response.ContentType = "application/pdf"
'Context.Response.AddHeader("Content-disposition", "attachment;filename=TicketEZ_tickets_" + eventname + ".pdf")
'Context.Response.AddHeader("content-length", stream.Length.ToString)
'Context.Response.BinaryWrite(stream.ToArray)
'Context.Response.Flush()
Return stream
stream.Close()
'Context.Response.End()
End If
But now I want to send this file as an email attachment...how can I do that? I tried this, but that doesnt work...(Value of type 'System.IO.MemoryStream' cannot be converted to 'String')
Dim att As New System.Net.Mail.Attachment(getfile)
Msg.Attachments.Add(att)
I'm trying to attach a memorystream as an attachment to an email, however the file is always empty. I'm using a streamwriter to write the text in to the memorystream, I then flush the streamwriter and I can see the memorystream has data. However when I attach the memorystream to the email the file is always empty. I can't see what I'm doing wrong. The code is:
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var4 is a string of XML data.
I trying to display image in picture box. The application have two part.First part is windows application, and second part is web service (asmx).This is the code for windows application:
Public Sub PrikazSlike()
Dim p As localhost.Service1 = New localhost.Service1()
PictureBox1.Image = Image.FromStream(p.PictureShow()) [code]....
The problem is that function in web service does not return System.IO.MemoryStream data type so I getting error message can not convert:
Error 1 Value of type 'WindowsApplication1.localhost.MemoryStream' cannot be converted to 'System.IO.Stream'.
The required functionality I am aiming for is to pull out RTF content from a database, edit it through a web interface (with a WYSIWYG editor) and then place the modified text back in to the database (in RTF format).
The control that I am using to do this is Telerik RadEditor (we have a license already for these controls). In the most recent version there appears to be functionality to load in RTF content from a string or a stream, but the only method I can see that is exposed for getting RTF back out is exportToRTF(); this method modified the headers and allows you to save a RTF version of the content you have just edited as a file.
The functionality to convert from HTML to RTF must exist somewhere within their library as you can export a RTF file, but I can not find any publicly exposed methods to pass this in to a stream or a string.
Does anybody know of a way that I can convert the HTML back to RTF using the Telerik libraries without saving out to a file?
I have a file, a.pdf, stored on a SharePoint server behind Windows authentication. I want to make a.pdf available through another Web app with forms authentication. Basically, link is clicked and up pops the open / save as dialog for the pdf (or other document file) I've set up my HTTPWebRequest and passed credentials, getting my data into a stream (file.GetResponseStream).
I've tried converting the stream to a byte array and then using response.write or response.output.write with no luck (stream not seekable) I've tried using a streamreader and doing a response.write(streamreader.readtoend()) and response.write(memorystream.toarray(),0,memorystream.toarray().length) with no luck (the message received from the server could not be parsed).
I have an small ASP.NET application that reads data from a table and sends it out as an excel attachment in an email message. The data is simply HTML table tr td tagged data. The way I am sending the message is by the following code:
byte[] data = GetData(excelData);
MemoryStream memoryStream = new MemoryStream(data);
mm.Attachments.Add(new Attachment(memoryStream, "info.xls", "text/plain"));
This has been working fine in Excel 2003 but for some reason Excel 2007 keeps trying to convert the whole thing to a formula and I get a "Cell Data too Long" error. I've tried searching but couldn't really find anything specific about why this might be happening in 07 or a simple way to fix it. I know 07 probably handles data a little bit different than 03 but I don't have a lot of time to dedicate to reworking this app if possible.
In our application, we allow user to upload documents which can be PDF, Doc, XLS, TXT. Uploaded documents will be saved on web server. We need to display link for each document user uploaded and when user click on that link, it should open relevant document. it is expected to have required software to open relevant documents.
To upload document, we use saveAs method of FileUpload control and it works absolutely fine.Now, how to view it?I believe, i need to copy/download file to local user machine and need to open it using Process.Start.For that i need to find user local temp directory. if i put path.GetTempPath(), it gives me web server directory and copy file there.
File.Copy(
sPath + dataReader["url"].ToString(),
Path.GetTempPath() + dataReader["url"].ToString(),
true);
I create a pdf, then I set NavigateUrl with the path. The file is opened, but if I re-create it, ie open the temp file pdf, don't reload the new.. Only after some minutes (I don't refresh the page) ie re-download the new pdf..How can I force to open always the file on the server?
View 2 RepliesI have built an ASP.NET (.NET v4) application in VS 2010. It is working just fine. But when I try to create deployment package (so I can deploy it in our test IIS 7.5 Server), it gives me error like this,
Error 1 Could not open Source file: Could not find file 'C:11-2 estobjDebugCSAutoParameterize ransformedWeb.config'. 0 0 test
Thing is in past, I had deployed the SAME application using the SAME method.
I am using HTML Input control that will open a file dialog window where user can select a file.
Is there a way to set a path from where to open the window. Right now it looks like the default folder is "My Documents".
I need it to point to something like "ftpexternalftp$Data"
I have many xml file in xmlfolder under the root director of my project. I need to protect all file to not let it open from the client browser.
My file have some credential information, and i need avoid to let it open in client browser.
I want to filter the Xml file alone while open file dialog ..How to i filter the Condition in File upload Browser time..I have an idea abt windows application Open dailog i want in web application.
View 4 RepliesJust wondering if there is a way to create a file using open filedialogue. I actually need a functioanlity a little bit different from Save Dialog. I have to use OpenFile dialogue because I want user to select file. In addition to this, if the file is not available and user just write a name of the file then it should pop-up like "File not found, would you like to create one?
View 2 RepliesAfter upload a pdf file (order.pdf) to remote server in UNC format, I used code below to open order.pdf file.Code is working in IE9 but not Chrome.Is there another way to open pdf file in remote server?
Dim fullpath As String = [String].Format("file:///{0}", "webserverorderorder.pdf")
Response.Redirect(fullpath)
I have a folder called GUI. Inside GUI thers another folder called PDF and inside this folder, there are some PDF files. This folder (GUI) is uploaded to the server too. Then I have a WebForm with some ImageButtons. When I click one of these ImageButtons, I want the file to open in a new tab. I tried with the following code:
[Code]....
As you can see, I build the path using the tooltips of the different ImageButtons. The ToolTip = File Name I want to open. When I try this in debug mode, it works. It opens the pdf file in a new tab. However when I publish my website and upload it to the server... it doesn't work... when I click an ImageButton I get the following exception: No application is associated with the specified file for this operation
Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code. Exception Details: System.ComponentModel.Win32Exception: No application is associated with the specified file for this operation
Source Error:
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Stack Trace:
[Code]....
[Win32Exception (0x80004005): No application is associated with the specified file for this operation]
LandingSite.LnkRelease1_Click(Object sender, EventArgs e) +215
System.Web.UI.WebControls.ImageButton.OnClick(ImageClickEventArgs e) +108
System.Web.UI.WebControls.ImageButton.RaisePostBackEvent(String eventArgument) +118
System.Web.UI.WebControls.ImageButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565
Version Information: Microsoft .NET Framework Version:2.0.50727.3607; ASP.NET Version:2.0.50727.3082
Excel cannot open the file "Report.xlsx" because the file format or extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file
View 2 RepliesI have a form where users can store some data for archived documents. All documents are ONLY in PDF format.
There are 2 things I would like to do:
1. there is a "file path" text box on the form. I would like to open a "browse file dialog" box when user clicks the textbox and then the user browses for the file (file is on the users local machine) and selects it. The full file path should be saved to the textbox as string (e.g. "c:archive2010document11122011.pdf"). Also I would like to "limit" the file browser dialog to only show PDF format files...
2. add a code behind command to open the file from the saved path+name (see 1.) in the user's default PDF viewer (Acrobat or Foxit)
I have a page that displays a GridView with a button . When the button is clicked, the grid is written to a temporary CSV file and then opened. I have implemented this 2 different ways, both of which work when I'm debugging on my local machine.
However when I deploy it to the website, clicking the button seems to do nothing. Here are the 2 code snippets that work on my local system:
[Code]....
and
[Code]....
Just so you see how the Tempfile is created, here's the rest of the code:
[Code]....
Why doesn't this work when deployed to the web?