Save/Open/Cancel dialog box

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Hi,

Can someone please tell me how to save an xml file from a site Url to local system by prompting through Save Dialog box.

I have written the following code rather writing the whole content on browser window itself rather than prompting through dialog box. Please tell me where I doing wrong.

C#

string Filename = "http://localhost/SiteName/FileName.xml";
        XmlDocument doc = new XmlDocument();
        doc.Load(Filename);
        string strXML = GetXMLString(doc);//Converts XMLDocument to string

        Response.Clear();
        Response.ClearHeaders();
        Response.ClearContent();
        Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
        Response.ContentType = "application/xml"; //or text/xml

        Response.AddHeader("content-disposition", String.Format("attachment;filename=" + Filename));
        Response.WriteFile(strXML);     
        Response.Flush();
        Response.Close();
        Response.End();

Thanks.

Posted 24-Jul-12 13:10pm

InfySam

Updated 24-Jul-12 13:42pm

Wes Aday

v2

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Comments

Sergey Alexandrovich Kryukov 24-Jul-12 20:07pm

You are not trying to write a file, so how can it be wrong? :-)
--SA

lukeer 25-Jul-12 2:47am

Looks like you are working on some web-based stuff. The user's browser should then be able to save a file. It does so by showing the user a dialog box he is familiar with. You would only have to provide a link.

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Clifford Nelson · Answer 1 · 2012-07-24T13:24:00

Solution 1

Look at the following: http://msdn.microsoft.com/en-us/library/8bh11f1k.aspx[^]

Here is the basic code for an open dialog for WinForms (WPF would be slightly different):

C#

var save = new SaveFileDialog();
var open = new OpenFileDialog();
var result = open.ShowDialog();
if (result == DialogResult.OK)
    MessageBox.Show("Filename selected to open is " + open.FileName);

See http://msdn.microsoft.com/en-us/library/system.windows.forms.openfiledialog.aspx[^] for more information on OpenFileDialog, and http://msdn.microsoft.com/en-us/library/system.windows.forms.savefiledialog.aspx[^] for SaveDialog

Posted 24-Jul-12 13:24pm

Clifford Nelson

Updated 25-Jul-12 6:45am

v2

Comments

InfySam 24-Jul-12 21:16pm

Pardon me if I am not clear regarding my requirement. I want to display a Save/Open/Cancel dialog box inorder to save the xml file(This xml file is from a site) on local system.

Clifford Nelson 24-Jul-12 22:56pm

Must be that you want to save a file on a remote system. Am I correct. Otherwise it is just using the Open/Save dialogs. If you do want to save/open to a remote system, you have to have installed program on the remote system because Windows does not like to allow remote access to a oomputer for obvious reasons. One way to do this is work thru the PowerShell remote features.

InfySam 25-Jul-12 8:47am

Hi all, Thanks for your replies. My apologies because this seemed I did not properly state my requirement (my bad :().
All that I want is on click of a button I want a save/open dialogbox to appear.
Can someone please help me with this?

Clifford Nelson 25-Jul-12 12:46pm

I have added to my response. Hope that helps.

InfySam 25-Jul-12 13:35pm

Hi,

Adding above code in my button click event gives the following error,

Showing a modal dialog box or form when the application is not running in UserInteractive mode is not a valid operation. Specify the ServiceNotification or DefaultDesktopOnly style to display a notification from a service application.

I am still unable to resolve this problem.
But I prefer open/Save download dialog box to the SaveFileDialog(), OpenFileDialog() and I think this can be achieved by using Content-Disposition. However using the following code is displaying content in the browser rather than popping up Open/Save/Cancel download dialog box.

string Filename = "http://localhost/SiteName/FileName.xml";
XmlDocument doc = new XmlDocument();
doc.Load(Filename);
string strXML = GetXMLString(doc);
HttpResponse response = HttpContext.Current.Response;
response.Clear();
response.ClearContent();
response.ClearHeaders();
response.Buffer = true;
response.AddHeader("ContentType", "application/octet-stream");
response.AddHeader("Content-Disposition", "attachment; filename=\"FileName.xml\";");
response.Write(strXML);
response.End();

Clifford Nelson 25-Jul-12 13:57pm

You must not be running in Desktop. Are you running ASP.NET or Silverlight.. I have seen issues with STA (single thread apartment) but not this. Look at http://social.msdn.microsoft.com/Forums/en-US/vbgeneral/thread/c409b6b6-acef-470a-b4b3-4b48e210dfc6/. I suspect you will have to do some custom dialogs. I am not an ASP.NET developer. THis may also help: http://forums.asp.net/p/978886/1247167.aspx

Save/Open/Cancel dialog box

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