trouble saving a jpg out of a picturebox....

[cdj]

Hi all,

I've got a picturebox on a form, and a save button. When I go to save,
the app craps out with the following error:

=============== ===
An unhandled exception of type
'System.Runtime .InteropService s.ExternalExcep tion' occurred in
system.drawing. dll

Additional information: A generic error occurred in GDI+.
=============== ===
And here's the additional GDI+ error info:

=============== ===
Unhandled Exception: System.Runtime. InteropServices .ExternalExcept ion:
A generic error occurred in GDI+.
at System.Drawing. Image.Save(Stre am stream, ImageCodecInfo encoder,
EncoderParamete rs encoderParams)
at System.Drawing. Image.Save(Stre am stream, ImageFormat format)
at _2DFunctionPlot .Form1.saveGrap hicClick(Object sender, EventArgs
e) in c:\documents and settings\cdj.mo bile-frege.000\stuff \c#
stuff\2dfunctio nplot\form1.cs: line 1005
at System.Windows. Forms.Control.O nClick(EventArg s e)
at System.Windows. Forms.Button.On Click(EventArgs e)
at System.Windows. Forms.Button.On MouseUp(MouseEv entArgs mevent)
at System.Windows. Forms.Control.W mMouseUp(Messag e& m, MouseButtons
button, Int32 clicks)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.ButtonBas e.WndProc(Messa ge& m)
at System.Windows. Forms.Button.Wn dProc(Message& m)
at System.Windows. Forms.ControlNa tiveWindow.OnMe ssage(Message& m)
at System.Windows. Forms.ControlNa tiveWindow.WndP roc(Message& m)
at System.Windows. Forms.NativeWin dow.DebuggableC allback(IntPtr
hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows. Forms.UnsafeNat iveMethods.Disp atchMessageW(MS G&
msg)
at System.Windows. Forms.Component Manager.System. Windows.Forms.U nsafeNativeMeth ods+IMsoCompone ntManager.FPush MessageLoop(Int 32
dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows. Forms.ThreadCon text.RunMessage LoopInner(Int32
reason, ApplicationCont ext context)
at System.Windows. Forms.ThreadCon text.RunMessage Loop(Int32 reason,
ApplicationCont ext context)
at System.Windows. Forms.Applicati on.Run(Form mainForm)
at _2DFunctionPlot .Form1.Main() in c:\documents and
settings\cdj.mo bile-frege.000\stuff \c#
stuff\2dfunctio nplot\form1.cs: line 663The program '[5460]
2DFunctionPlot. exe' has exited with code 0 (0x0).
===============

I'm new to .net programming - this lil app is meant to be a learning
experience, in fact. Here's the code for my save routing, which is
"simply" a trivial variant of what's on MSDN:

=============== ============
private void saveGraphicClic k(object sender, System.EventArg s e)
{
// Displays a SaveFileDialog so the user can save the Image
// assigned to Button2.
SaveFileDialog saveFileDialog1 = new SaveFileDialog( );
saveFileDialog1 .Filter = "JPeg Image|*.jpg|Bit map Image|*.bmp|Gif
Image|*.gif";
saveFileDialog1 .Title = "Save an Image File";
saveFileDialog1 .ShowDialog();

// If the file name is not an empty string open it for saving.
if(saveFileDial og1.FileName != "")
{
// Saves the Image via a FileStream created by the OpenFile
method.
System.IO.FileS tream fs =
(System.IO.File Stream)saveFile Dialog1.OpenFil e();
// Saves the Image in the appropriate ImageFormat based upon the
// File type selected in the dialog box.
// NOTE that the FilterIndex property is one-based.
switch(saveFile Dialog1.FilterI ndex)
{
case 1 :
this.graphicsBo x.Image.Save(fs ,
System.Drawing. Imaging.ImageFo rmat.Jpeg);
break;

case 2 :
this.graphicsBo x.Image.Save(fs ,
System.Drawing. Imaging.ImageFo rmat.Bmp);
break;

case 3 :
this.graphicsBo x.Image.Save(fs ,
System.Drawing. Imaging.ImageFo rmat.Gif);
break;
}

fs.Close();
}
}
=============

The graphic I'm trying to save is always a jpg, and thus the error
always occurs in the Case1 save statement.

Does anyone know what I'm doing wrong?

(please let me know if I haven't supplied enuff/relevant info, i'll be
glad to provide it...)

thx for any insights,

cdj

[AlexS]

Can you do image.Load for same jpeg w/o error? Are you creating image
yourself or using precereated one?

I've seen cases when jpeg engine in .Net was unable to display image, which
IE or PhotoEditor were able to show just fine. With similar internal GDI
errors. I think this issue exists since Beta.

You might try to find some special way to save such problematic images. E.g.
like bitmaps, which you convert later using some other tools.

HTH
Alex

"cdj" <a_******@hotma il.com> wrote in message
news:b0******** *************** ***@posting.goo gle.com...

Hi all,

I've got a picturebox on a form, and a save button. When I go to save,
the app craps out with the following error:

=============== ===
An unhandled exception of type
'System.Runtime .InteropService s.ExternalExcep tion' occurred in
system.drawing. dll

Additional information: A generic error occurred in GDI+.
=============== ===
And here's the additional GDI+ error info:

=============== ===
Unhandled Exception: System.Runtime. InteropServices .ExternalExcept ion:
A generic error occurred in GDI+.
at System.Drawing. Image.Save(Stre am stream, ImageCodecInfo encoder,
EncoderParamete rs encoderParams)
at System.Drawing. Image.Save(Stre am stream, ImageFormat format)
at _2DFunctionPlot .Form1.saveGrap hicClick(Object sender, EventArgs
e) in c:\documents and settings\cdj.mo bile-frege.000\stuff \c#
stuff\2dfunctio nplot\form1.cs: line 1005
at System.Windows. Forms.Control.O nClick(EventArg s e)
at System.Windows. Forms.Button.On Click(EventArgs e)
at System.Windows. Forms.Button.On MouseUp(MouseEv entArgs mevent)
at System.Windows. Forms.Control.W mMouseUp(Messag e& m, MouseButtons
button, Int32 clicks)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.ButtonBas e.WndProc(Messa ge& m)
at System.Windows. Forms.Button.Wn dProc(Message& m)
at System.Windows. Forms.ControlNa tiveWindow.OnMe ssage(Message& m)
at System.Windows. Forms.ControlNa tiveWindow.WndP roc(Message& m)
at System.Windows. Forms.NativeWin dow.DebuggableC allback(IntPtr
hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows. Forms.UnsafeNat iveMethods.Disp atchMessageW(MS G&
msg)
at System.Windows. Forms.Component Manager.System. Windows.Forms.U nsafeNativeMeth o
ds+IMsoComponen tManager.FPushM essageLoop(Int3 2 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows. Forms.ThreadCon text.RunMessage LoopInner(Int32
reason, ApplicationCont ext context)
at System.Windows. Forms.ThreadCon text.RunMessage Loop(Int32 reason,
ApplicationCont ext context)
at System.Windows. Forms.Applicati on.Run(Form mainForm)
at _2DFunctionPlot .Form1.Main() in c:\documents and
settings\cdj.mo bile-frege.000\stuff \c#
stuff\2dfunctio nplot\form1.cs: line 663The program '[5460]
2DFunctionPlot. exe' has exited with code 0 (0x0).
===============

I'm new to .net programming - this lil app is meant to be a learning
experience, in fact. Here's the code for my save routing, which is
"simply" a trivial variant of what's on MSDN:

=============== ============
private void saveGraphicClic k(object sender, System.EventArg s e)
{
// Displays a SaveFileDialog so the user can save the Image
// assigned to Button2.
SaveFileDialog saveFileDialog1 = new SaveFileDialog( );
saveFileDialog1 .Filter = "JPeg Image|*.jpg|Bit map Image|*.bmp|Gif
Image|*.gif";
saveFileDialog1 .Title = "Save an Image File";
saveFileDialog1 .ShowDialog();

// If the file name is not an empty string open it for saving.
if(saveFileDial og1.FileName != "")
{
// Saves the Image via a FileStream created by the OpenFile
method.
System.IO.FileS tream fs =
(System.IO.File Stream)saveFile Dialog1.OpenFil e();
// Saves the Image in the appropriate ImageFormat based upon the
// File type selected in the dialog box.
// NOTE that the FilterIndex property is one-based.
switch(saveFile Dialog1.FilterI ndex)
{
case 1 :
this.graphicsBo x.Image.Save(fs ,
System.Drawing. Imaging.ImageFo rmat.Jpeg);
break;

case 2 :
this.graphicsBo x.Image.Save(fs ,
System.Drawing. Imaging.ImageFo rmat.Bmp);
break;

case 3 :
this.graphicsBo x.Image.Save(fs ,
System.Drawing. Imaging.ImageFo rmat.Gif);
break;
}

fs.Close();
}
}
=============

The graphic I'm trying to save is always a jpg, and thus the error
always occurs in the Case1 save statement.

Does anyone know what I'm doing wrong?

(please let me know if I haven't supplied enuff/relevant info, i'll be
glad to provide it...)

thx for any insights,

cdj

[AlexS]

Can you do image.Load for same jpeg w/o error? Are you creating image
yourself or using precereated one?

I've seen cases when jpeg engine in .Net was unable to display image, which
IE or PhotoEditor were able to show just fine. With similar internal GDI
errors. I think this issue exists since Beta.

You might try to find some special way to save such problematic images. E.g.
like bitmaps, which you convert later using some other tools.

HTH
Alex

"cdj" <a_******@hotma il.com> wrote in message
news:b0******** *************** ***@posting.goo gle.com...

Hi all,

I've got a picturebox on a form, and a save button. When I go to save,
the app craps out with the following error:

=============== ===
An unhandled exception of type
'System.Runtime .InteropService s.ExternalExcep tion' occurred in
system.drawing. dll

Additional information: A generic error occurred in GDI+.
=============== ===
And here's the additional GDI+ error info:

=============== ===
Unhandled Exception: System.Runtime. InteropServices .ExternalExcept ion:
A generic error occurred in GDI+.
at System.Drawing. Image.Save(Stre am stream, ImageCodecInfo encoder,
EncoderParamete rs encoderParams)
at System.Drawing. Image.Save(Stre am stream, ImageFormat format)
at _2DFunctionPlot .Form1.saveGrap hicClick(Object sender, EventArgs
e) in c:\documents and settings\cdj.mo bile-frege.000\stuff \c#
stuff\2dfunctio nplot\form1.cs: line 1005
at System.Windows. Forms.Control.O nClick(EventArg s e)
at System.Windows. Forms.Button.On Click(EventArgs e)
at System.Windows. Forms.Button.On MouseUp(MouseEv entArgs mevent)
at System.Windows. Forms.Control.W mMouseUp(Messag e& m, MouseButtons
button, Int32 clicks)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.ButtonBas e.WndProc(Messa ge& m)
at System.Windows. Forms.Button.Wn dProc(Message& m)
at System.Windows. Forms.ControlNa tiveWindow.OnMe ssage(Message& m)
at System.Windows. Forms.ControlNa tiveWindow.WndP roc(Message& m)
at System.Windows. Forms.NativeWin dow.DebuggableC allback(IntPtr
hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows. Forms.UnsafeNat iveMethods.Disp atchMessageW(MS G&
msg)
at System.Windows. Forms.Component Manager.System. Windows.Forms.U nsafeNativeMeth o
ds+IMsoComponen tManager.FPushM essageLoop(Int3 2 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows. Forms.ThreadCon text.RunMessage LoopInner(Int32
reason, ApplicationCont ext context)
at System.Windows. Forms.ThreadCon text.RunMessage Loop(Int32 reason,
ApplicationCont ext context)
at System.Windows. Forms.Applicati on.Run(Form mainForm)
at _2DFunctionPlot .Form1.Main() in c:\documents and
settings\cdj.mo bile-frege.000\stuff \c#
stuff\2dfunctio nplot\form1.cs: line 663The program '[5460]
2DFunctionPlot. exe' has exited with code 0 (0x0).
===============

I'm new to .net programming - this lil app is meant to be a learning
experience, in fact. Here's the code for my save routing, which is
"simply" a trivial variant of what's on MSDN:

=============== ============
private void saveGraphicClic k(object sender, System.EventArg s e)
{
// Displays a SaveFileDialog so the user can save the Image
// assigned to Button2.
SaveFileDialog saveFileDialog1 = new SaveFileDialog( );
saveFileDialog1 .Filter = "JPeg Image|*.jpg|Bit map Image|*.bmp|Gif
Image|*.gif";
saveFileDialog1 .Title = "Save an Image File";
saveFileDialog1 .ShowDialog();

// If the file name is not an empty string open it for saving.
if(saveFileDial og1.FileName != "")
{
// Saves the Image via a FileStream created by the OpenFile
method.
System.IO.FileS tream fs =
(System.IO.File Stream)saveFile Dialog1.OpenFil e();
// Saves the Image in the appropriate ImageFormat based upon the
// File type selected in the dialog box.
// NOTE that the FilterIndex property is one-based.
switch(saveFile Dialog1.FilterI ndex)
{
case 1 :
this.graphicsBo x.Image.Save(fs ,
System.Drawing. Imaging.ImageFo rmat.Jpeg);
break;

case 2 :
this.graphicsBo x.Image.Save(fs ,
System.Drawing. Imaging.ImageFo rmat.Bmp);
break;

case 3 :
this.graphicsBo x.Image.Save(fs ,
System.Drawing. Imaging.ImageFo rmat.Gif);
break;
}

fs.Close();
}
}
=============

The graphic I'm trying to save is always a jpg, and thus the error
always occurs in the Case1 save statement.

Does anyone know what I'm doing wrong?

(please let me know if I haven't supplied enuff/relevant info, i'll be
glad to provide it...)

thx for any insights,

cdj

[cdj]

"AlexS" <sa***********@ SPAMsympaticoPL EASE.ca> wrote in message news:<en******* *******@TK2MSFT NGP10.phx.gbl>. ..

Can you do image.Load for same jpeg w/o error? Are you creating image
yourself or using precereated one?
Hm. Never trid to do an image.load..... that's because the image is
being generated by another program (Mathematica), and being fed into
the picturebox. The image displays perfectly in the picturebox
everytime without fail.
You might try to find some special way to save such problematic images. E.g.
like bitmaps, which you convert later using some other tools.
o - so it might just be a problem with jps? i'll give gif and bmp a
try i guess.... i just figured i was making some kinda stupid coding
mistake.....
HTH
Alex

we'll see.... but i really appreciate your taking the time to
answer...

cdj