OpenfileDialog in ASP.NET code behind ILLEGAL ?

[hullnwm]

In my asp.net page I'm attempting to use the OpenfileDialog object to
offer a common dialog box for the user to select a particular file on their
hard drive that may subsequently be uploaded
to our website.
The reason I'm doing it this way is that I've read that by using the common
dialog box, the security issues are based on the logged in user.

Of course, I added a reference to System.Windows. Forms and added a using
clause.

Here's the problem, when I use the following code

OpenFileDialog ofd = new OpenFileDialog( );
ofd.Title = "Choose File";
ofd.InitialDire ctory = @"c:\" ;
ofd.Filter = "All files (*.*)|*.*|All files (*.*)|*.*" ;
ofd.FilterIndex = 1 ;
ofd.RestoreDire ctory = true ;
ofd.ShowDialog( );

ShowDialog() throws the following exception:

[InvalidOperatio nException: It is invalid to show a modal dialog or form
when the application is not running in
UserInteractive mode. Specify the ServiceNotifica tion or DefaultDesktopO nly
style to display a notification
from a service application.]
System.Windows. Forms.CommonDia log.ShowDialog( )
TestPortal1.Att achFileForm.btn Browse_Click(Ob ject sender, EventArgs e) in
c:\inetpub\wwwr oot\testportal1 \attachfileform .aspx.cs:73
System.Web.UI.W ebControls.Butt on.OnClick(Even tArgs e)
System.Web.UI.W ebControls.Butt on.System.Web.U I.IPostBackEven tHandler.RaiseP ostBackEvent(St ring
eventArgument)
System.Web.UI.P age.RaisePostBa ckEvent(IPostBa ckEventHandler
sourceControl, String eventArgument)
System.Web.UI.P age.RaisePostBa ckEvent(NameVal ueCollection postData)
System.Web.UI.P age.ProcessRequ estMain()

Any advise you can give would be greatly appreciated.

Thanks,
IpPhD

[Karl Seguin]

It just doesn't work.

ASP.Net only works by rendering legitimate html, css and
javascript...br owsers have no idea what/how an OpenFileDialog is/works....

you need to use an HtmlFileInput.. .no alterantives unless you can use an ocx
or some java (not script).

Karl

--
MY ASP.Net tutorials
http://www.openmymind.net/ - New and Improved (yes, the popup is annoying)
http://www.openmymind.net/faq.aspx - unofficial newsgroup FAQ (more to
come!)
"hullnwm" <hu*****@nospam .nospam> wrote in message
news:%2******** ********@TK2MSF TNGP09.phx.gbl. ..

In my asp.net page I'm attempting to use the OpenfileDialog object to
offer a common dialog box for the user to select a particular file on
their hard drive that may subsequently be uploaded
to our website.
The reason I'm doing it this way is that I've read that by using the
common dialog box, the security issues are based on the logged in user.

Of course, I added a reference to System.Windows. Forms and added a using
clause.

Here's the problem, when I use the following code

OpenFileDialog ofd = new OpenFileDialog( );
ofd.Title = "Choose File";
ofd.InitialDire ctory = @"c:\" ;
ofd.Filter = "All files (*.*)|*.*|All files (*.*)|*.*" ;
ofd.FilterIndex = 1 ;
ofd.RestoreDire ctory = true ;
ofd.ShowDialog( );

ShowDialog() throws the following exception:

[InvalidOperatio nException: It is invalid to show a modal dialog or form
when the application is not running in
UserInteractive mode. Specify the ServiceNotifica tion or
DefaultDesktopO nly style to display a notification
from a service application.]
System.Windows. Forms.CommonDia log.ShowDialog( )
TestPortal1.Att achFileForm.btn Browse_Click(Ob ject sender, EventArgs e)
in c:\inetpub\wwwr oot\testportal1 \attachfileform .aspx.cs:73
System.Web.UI.W ebControls.Butt on.OnClick(Even tArgs e)

System.Web.UI.W ebControls.Butt on.System.Web.U I.IPostBackEven tHandler.RaiseP ostBackEvent(St ring
eventArgument)
System.Web.UI.P age.RaisePostBa ckEvent(IPostBa ckEventHandler
sourceControl, String eventArgument)
System.Web.UI.P age.RaisePostBa ckEvent(NameVal ueCollection postData)
System.Web.UI.P age.ProcessRequ estMain()

Any advise you can give would be greatly appreciated.

Thanks,
IpPhD

[Simon Harris]

I think you'll find that System.Windows. Forms is only for Windows
applications - Not for ASP.Net apps.

Have a Google for u0ploading files with ASP.Net.

"hullnwm" <hu*****@nospam .nospam> wrote in message
news:%2******** ********@TK2MSF TNGP09.phx.gbl. ..

In my asp.net page I'm attempting to use the OpenfileDialog object to
offer a common dialog box for the user to select a particular file on
their hard drive that may subsequently be uploaded
to our website.
The reason I'm doing it this way is that I've read that by using the
common dialog box, the security issues are based on the logged in user.

Of course, I added a reference to System.Windows. Forms and added a using
clause.

Here's the problem, when I use the following code

OpenFileDialog ofd = new OpenFileDialog( );
ofd.Title = "Choose File";
ofd.InitialDire ctory = @"c:\" ;
ofd.Filter = "All files (*.*)|*.*|All files (*.*)|*.*" ;
ofd.FilterIndex = 1 ;
ofd.RestoreDire ctory = true ;
ofd.ShowDialog( );

ShowDialog() throws the following exception:

[InvalidOperatio nException: It is invalid to show a modal dialog or form
when the application is not running in
UserInteractive mode. Specify the ServiceNotifica tion or
DefaultDesktopO nly style to display a notification
from a service application.]
System.Windows. Forms.CommonDia log.ShowDialog( )
TestPortal1.Att achFileForm.btn Browse_Click(Ob ject sender, EventArgs e)
in c:\inetpub\wwwr oot\testportal1 \attachfileform .aspx.cs:73
System.Web.UI.W ebControls.Butt on.OnClick(Even tArgs e)

System.Web.UI.W ebControls.Butt on.System.Web.U I.IPostBackEven tHandler.RaiseP ostBackEvent(St ring
eventArgument)
System.Web.UI.P age.RaisePostBa ckEvent(IPostBa ckEventHandler
sourceControl, String eventArgument)
System.Web.UI.P age.RaisePostBa ckEvent(NameVal ueCollection postData)
System.Web.UI.P age.ProcessRequ estMain()

Any advise you can give would be greatly appreciated.

Thanks,
IpPhD

[Steve C. Orr [MVP, MCSD]]

It's really not going to work the way you're doing it. What exactly are you
trying to accomplish?
This article shows you how to allow file uploads in ASP.NET.
http://SteveOrr.net/articles/EasyUploads.aspx

--
I hope this helps,
Steve C. Orr, MCSD, MVP
http://SteveOrr.net
"hullnwm" <hu*****@nospam .nospam> wrote in message
news:%2******** ********@TK2MSF TNGP09.phx.gbl. ..

In my asp.net page I'm attempting to use the OpenfileDialog object to
offer a common dialog box for the user to select a particular file on
their hard drive that may subsequently be uploaded
to our website.
The reason I'm doing it this way is that I've read that by using the
common dialog box, the security issues are based on the logged in user.

Of course, I added a reference to System.Windows. Forms and added a using
clause.

Here's the problem, when I use the following code

OpenFileDialog ofd = new OpenFileDialog( );
ofd.Title = "Choose File";
ofd.InitialDire ctory = @"c:\" ;
ofd.Filter = "All files (*.*)|*.*|All files (*.*)|*.*" ;
ofd.FilterIndex = 1 ;
ofd.RestoreDire ctory = true ;
ofd.ShowDialog( );

ShowDialog() throws the following exception:

[InvalidOperatio nException: It is invalid to show a modal dialog or form
when the application is not running in
UserInteractive mode. Specify the ServiceNotifica tion or
DefaultDesktopO nly style to display a notification
from a service application.]
System.Windows. Forms.CommonDia log.ShowDialog( )
TestPortal1.Att achFileForm.btn Browse_Click(Ob ject sender, EventArgs e)
in c:\inetpub\wwwr oot\testportal1 \attachfileform .aspx.cs:73
System.Web.UI.W ebControls.Butt on.OnClick(Even tArgs e)

System.Web.UI.W ebControls.Butt on.System.Web.U I.IPostBackEven tHandler.RaiseP ostBackEvent(St ring
eventArgument)
System.Web.UI.P age.RaisePostBa ckEvent(IPostBa ckEventHandler
sourceControl, String eventArgument)
System.Web.UI.P age.RaisePostBa ckEvent(NameVal ueCollection postData)
System.Web.UI.P age.ProcessRequ estMain()

Any advise you can give would be greatly appreciated.

Thanks,
IpPhD

[hullnwm]

Hi Steve,
Thanks for setting me straight and thank you very much for the link. It
helped immensely.
Thanks again,
ipPhD

"Steve C. Orr [MVP, MCSD]" <St***@Orr.ne t> wrote in message
news:ez******** ******@TK2MSFTN GP09.phx.gbl...

It's really not going to work the way you're doing it. What exactly are
you trying to accomplish?
This article shows you how to allow file uploads in ASP.NET.
http://SteveOrr.net/articles/EasyUploads.aspx

--
I hope this helps,
Steve C. Orr, MCSD, MVP
http://SteveOrr.net
"hullnwm" <hu*****@nospam .nospam> wrote in message
news:%2******** ********@TK2MSF TNGP09.phx.gbl. ..

In my asp.net page I'm attempting to use the OpenfileDialog object to
offer a common dialog box for the user to select a particular file on
their hard drive that may subsequently be uploaded
to our website.
The reason I'm doing it this way is that I've read that by using the
common dialog box, the security issues are based on the logged in user.

Of course, I added a reference to System.Windows. Forms and added a using
clause.

Here's the problem, when I use the following code

OpenFileDialog ofd = new OpenFileDialog( );
ofd.Title = "Choose File";
ofd.InitialDire ctory = @"c:\" ;
ofd.Filter = "All files (*.*)|*.*|All files (*.*)|*.*" ;
ofd.FilterIndex = 1 ;
ofd.RestoreDire ctory = true ;
ofd.ShowDialog( );

ShowDialog() throws the following exception:

[InvalidOperatio nException: It is invalid to show a modal dialog or form
when the application is not running in
UserInteractive mode. Specify the ServiceNotifica tion or
DefaultDesktopO nly style to display a notification
from a service application.]
System.Windows. Forms.CommonDia log.ShowDialog( )
TestPortal1.Att achFileForm.btn Browse_Click(Ob ject sender, EventArgs e)
in c:\inetpub\wwwr oot\testportal1 \attachfileform .aspx.cs:73
System.Web.UI.W ebControls.Butt on.OnClick(Even tArgs e)

System.Web.UI.W ebControls.Butt on.System.Web.U I.IPostBackEven tHandler.RaiseP ostBackEvent(St ring
eventArgument)
System.Web.UI.P age.RaisePostBa ckEvent(IPostBa ckEventHandler
sourceControl, String eventArgument)
System.Web.UI.P age.RaisePostBa ckEvent(NameVal ueCollection postData)
System.Web.UI.P age.ProcessRequ estMain()

Any advise you can give would be greatly appreciated.

Thanks,
IpPhD