Generic Error In GDI+ With ToolStrip In ManagerRenderMode
Jan 3, 2011I have a vb.net form with ToolStrip menu [code]My development environment is .net 4.0, VS2010, windows 7 x64; but occasionally I am getting next erro.[code]
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ToolStrip On A Databound Form - Toolstrip Buttons Don't Receive Focus In The Normal Way ?
Mar 24, 2009I really want to make use of the toolstrip and databinding but these two technologies keep conflicting with each other. I think the root cause is something to with the fact that the toolstrip buttons don't recieve focus in the normal way.
I invite you to try the following:-
1. Create a form and put some text boxes a tool strip with a save button on it.
2. Write a query or sproc to get a datatable back and bind your text boxes to the field in the datatable.
3. In the code behind your Save ToolStripButton put some code that makes an arbitrary change to a field on the dataset (it doesn't matter whther this field is bound to a text box or not). eg:-
m_DataTable.Rows(0).Item("CommissionRatePerc") = "0.0000"
4. Put a breakpoint in the save and run the form.
5. Make some changes in the text boxes. Do not leave the last text box but rather click save while a text box whose contents you have edited still has focus.
6. When your code hits the breakpoint, query the value of the data table field that is bound to the text box you were editing when you clicked save - it will still contain the unedited value. Unless you do something about it that unedited value is going to get saved back to your DB.
We did get around this problem by explicetely setting the focus to another control on the form before saving. That worked most of the time because it prompts the text box to flush it's value back to the datatable (nb EndEdit does not work, although you'd have expected it to). However, and this is the reason I suggested you add a line of code that changed a value in the underlying datatable in step 3, if you change a value in code in this way before the value from the text box get's flushed back then it doesn't seem to matter what you do, the user's current edit is simply lost. They will still show in the text box, though, leading your user to believe that the change has been committed when it hasn't. Our final solution is that we never ever change a value in the adtaset in the code behind our toolstrip buttons. That's working but it's a pretty big restriction.
Error From Custom Control & ToolStrip?
Jan 20, 2007I have created a Custom control, containing 4 masked text boxes.and most times when i build it, i get a error: "InvalidArgument=Value of '-2147483648' is not valid for row position.' What is it? i searched MSDN, it looks like one of the SQL errors. How can this happen, i didn't use SQL.Edit: i fixed this tool strip problem. seems that i put visible to false unknowingly. I also have a problem with my Tool strip. The tool strip on the top works well, but the one i placed in a table layout panel, is missing from view, it only appears in Design view when i select it from the bottom strip.
View 4 RepliesIs There A Concept Of "Generic Structure" Similar To Generic Collections, Generic Classes
Dec 16, 2009We have migrated our Vb6 application to VB.NET using a third party tool. Now we are in a process of Refactoring and introducing object oriented concepts in the application.
In VB6, we were using structures in many places. As a part of introducing object oriented programming,
1. is it a good idea of changing all Structures to Classes? or Is there a concept of "Generic Structure" similar to Generic collections, Generic classes?
2. Can some one guide me any source containing guide lines or best practices for applications that are migrated to VB.NET from VB6 and implementing object oriented programmaing.
PictureBox Image Save Give GDI+ Error On Line 2 Saying "A Generic Error Occured In GDI+"?
Jan 30, 2009I read an image from the database and displayed it in a picture box...works fine...here is the code for that...[code].....
It throws an error on line 2 saying "A Generic Error occured in GDI+."
Error: A Generic Error Occurred In GDI+
Aug 21, 2010I have 10 year old animated GIF that works fine in an internet browser, but when I set it as an image in a picture box I get the following error: "A generic error occurred in GDI+." I attached the file. Does anyone know how I can get this image to place in my vb form? If the image needs to be modified?
View 4 RepliesA Generic Error Occured In GDI+
Mar 18, 2009I have some code that takes a screen capture of my monitor. This code seems to work perfectly OK and can take multiple screen captures, apart from when I do a Print Screen using the keyboard or open SnagIT 8, when I then try to run my code again I get an error "A generic error occured in GDI+" I am at a bit of a loss, I have had a look on the internet, but everything I seem to find appears to be related to web apps. and access permissions. This is a window based application and therefore can not seem to find an answer.[code]
View 1 RepliesA Generic Error Occured In Gdi?
Aug 19, 2010I've got the coding below to make a screenshot and store it in a jpg file`.. this works fine on my computer with vb.net installed. However when I tried running it on an other computer it gave me this exception:
'a generic error occured in gdi'
'the coding
PHP
Dim screenImage As New Bitmap(My.Computer.Screen.Bounds.Width, My.Computer.Screen.Bounds.Height)
Dim g As System.Drawing.Graphics = System.Drawing.Graphics.FromImage(screenImage)
[Code]....
I've read on internet that this is a write permission issue or it has something to do with the stream. Anyway I dunno how to alter the coding so that every user can make a screenshot.
A Generic Error Occurred In GDI+
Jun 22, 2009I am writing a VB.NET application which captures an image from a webcam and saves it as a jpeg. I have a button which captures the image and successfully saves the image. However when I click the button again to save the image as the same file I get the following GDI error[code]....
View 4 RepliesA Generic Error Occurred In GDI+?
Apr 7, 2012i save the PictureBox Image to the Sql using the following code
Private Function convertPicBoxImageToByte(ByVal pbImage As Image) As Byte()
Dim ms As New System.IO.MemoryStream()
pbImage.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg)
[code]....
Generic Error In Program.net
Jan 9, 2012How do I fix this error with the code below in visual basic.net using visual basic express?[code]...
View 1 RepliesGeneric Error Occured In Gdi+?
Nov 18, 2011i try to save image to a folder on a server. i load the image from a fileupload control, resize it and save to the folder. this works fine when i run from Visual studio. But when i deployed to the server, i get the error: "Generic Error Occured in gdi+". In trying to solve this, i give network service and asp.net accounts permissions to the folder.
Public Function SaveEntityImage() As Boolean
If fuEntity.PostedFile IsNot Nothing AndAlso fuEntity.PostedFile.FileName <> "" Then
[code]....
Generic Error Occurred In GDI
Jan 12, 2010I need to save an image after opening it in from an OFD.
[code]...
Generic Error Occurred In GDI+
Aug 20, 2009I have a problem with this code. If i start the program and click on save.The program saves the picture. If i reload the picturebox and save it again i get the error :A generic error occurred in GDI+.I think the problem is that the File is being used by another process.So i think i can't rewrite the bmp file. Is it possible to release it from the process so i can write it again? [code]
View 11 RepliesA Generic Error Occurred In GDI+ While Saving
Jun 2, 2011My app has an image in it in a picture box. I need the end user to be able to change it. So the code I added below should do that. However, I get the "A generic error occurred in GDI+. while saving".I understand it as this- possibly an error saving it to C:?? Because when I save it to a folder such as MyPictures or Pictures it saves A-ok. [code]
View 4 RepliesGeneric Error Handling Class?
Jan 10, 2012We are developing an application for our shop floor. This program will be tracking material through the shop and we need to capture any errors the program generates, but we don't need to stop the program for all errors. I have some code to do a screen capture and put it in a database with exception.tostring data for debugging.
What we would like to do, is create an exception from the base class, but provide additional properties to allow us to set a severity and a user friendly error message. I would like to encapsulate this in a class that we would call in the catch of a try/catch, set the properties on the class, have the class record the data to the database, then raise the exception to the main program to display only the user friendly message and severity. The main program would then determine the severity and based on the severity stop the program or just display a discreet msg and continue to process.
Does anyone have an example of a custom exception class derived from exception that does something similar, or if I heading in the wrong direction, does anyone have a better solution?
VS 2008 A Generic Error Occurred In GDI+
Jul 17, 2009I did post this in my thread about webcam but its nothing to do with webcam issues, the code for the webcam is working perfectly now I am instead now having an issue saving an image file from a picture box.
I don't mind how its done or whether its bmp/jpg (jpg would be better for te compression) but This orginally did work now I keep getting this error that I have never come across before and can't find much information on the error.Error Message:A generic error occurred in GDI+.
[Code]...
VS 2008 A Generic Error Occurred In GDI+?
Jul 8, 2011i just encounterd an error gdi+ when saving same image back to database.im using this code to get image from db
'Stream object containing the binary data
Dim ms As MemoryStream
ms = New MemoryStream(CType(Me.DataGridSearchView.SelectedCells(10).Value, Byte()))
frm.Picture1 = Image.FromStream(ms)
ms.Close()
frm.Picture1 is a property of image type from another class.and this my code to update image back to db
If Not Me.PictureBox1.Image Is Nothing Then
Dim custPic as Byte() = Nothing
Dim ms As MemoryStream = New MemoryStream
[code]....
there is no problem if i changed the image before saving it back to db,it gives error if you will not change the image before saving it back to database..
Why Does Code Throw A Generic Error In GDI+
Jul 28, 2011I'm trying to convert a batch of .pngs to .jpgs, as in this question:
[Code]....
The call to jpg.Save, however, with a "generic error" in GDI+. Originally outside of the innermost Using statement, I moved the call inwards as per this answer, but it didn't change anything. I have verified that newfile contains a valid path, and that the program has write access to the directory. What am I missing?
.net - Generic Error In GDI+ When Calling Bitmap.getHBitmap()?
Feb 18, 2010I'm writing an application which as part of it draws an image on a Logitech G15v2 keyboard's LCD. For the most part the function works fine, but after a while of running, one of the lines throws a "Generic Error in GDI+" The problem, according to a stack trace, is in Bitmap.GetHbitmap():
at System.Drawing.Bitmap.GetHbitmap(Color background)
at System.Drawing.Bitmap.GetHbitmap()
at CSCI171_TermProject.G15.Tick(Single Interval) in C:UsersSukasaCSCI171Term ProjectCSCI171-TermProjectG15.vb:line 45"
I've read a few threads mentioning this error, but that was in the context of saving a file, not getting its associated HBitmap. Would anyone with more experience with GDI+?For better reference, here's the full code module:
Public Module G15
Private G15 As New G15Lib.G15Interface
Private G15BaseImage As New Bitmap("GFXG15-BGImg.png")
Private G15Minimap As New Bitmap(43, 43, Imaging.PixelFormat.Format32bppArgb)
[code]....
C# - Generic Method Overloading Compilation Error In VB?
Aug 5, 2009I have a problem with the VB.NET compiler failing to compile a class (in a separate C# assembly) which contains two overloads of a method with generic arguments. The equivalent code in C# compiles against the same assembly with no errors. Here are the two method signatures:
protected void SetValue<T>(T newValue, ref T oldValue)
protected void SetValue<T>(T? newValue, ref T? oldValue) where T : struct
Here is the code to three assemblies that demonstrate the problem. The first is the C# assembly with a Base class that implements the generic methods. The second is a C# class derived from Base and calls both overloads of SetValue correctly. The third is a VB class also derived from Base, but fails to compile with the following error message:
[Code]...
Am I doing something wrong in the VB code, or are C# & VB different when it comes to generic overload resolution? If I make the method arguments in Base non-generic then everything compiles correctly, but then I have to implement SetValue for every type that I wish to support.
Generic Was Used With Wrong Number Of Arguments Error?
Feb 12, 2010Does anyone know what on earth this is? i can't get it to go away.model {"The generic type 'System.Web.Mvc.ViewUserControl`1' was used with the wrong number of generic arguments in assembly 'System.Web.Mvc...it happens when i call a newly constructed model that i pass to a partial view, and try using/calling some methods of it in the view.
View 1 RepliesGeneric Error Occurred In GDI+" Trying To Import HBITMAP From Dll?
Dec 11, 2011I'm trying to import an HBITMAP created in an external dll. The dll is written in C++. What happens is that I get a non-null handle returned from the dll, but when converting to Image using FromHBitmap I get an unhandled exception as shown in the thread title.
I reduced the failure down to a barebones example. Here is the core part of the exporthbm.dll:
[Code]...
C# - Nullable(of Guid) With Generic Delegate Causes Weird (hidden) Error?
Jun 6, 2011Scroll to the bottom, EDIT 19 onwards. See @Chris's comments also for good examples
[code]...
It's all gone quiet since Edit 19ish and @Chris reinforcing the issue with a good example (thank you Chris). I'll make the question a little easier (and attempt to tidy up all of the above), can anyone prove this is not an MS bug or similar? It seems to be something under the hood is not correctly wired up for VB.Net with regards to Nullable Structures and Events? However, all other cases using the Nullable Structures does appear to work?
Typecasting Generic Parameters - Error Value Of Type 'String' Cannot Be Converted To 'T'
May 23, 2010Using the following code:
[Code]...
.net - Can A Generic Version Of A Derived Class Override A Base Method Using The Generic Type
Apr 13, 2012Consider:
Public MustInherit Class Column
Public ReadOnly Property ReturnSomethingUseful() As Object
Get
'return something useful
[code]....
But this gives the following error:
Public Overrides Function ParseValue(sValue As String) As Boolean'
cannot override 'Public Overridable Function ParseValue(sValue As String) As Object'
because they differ by their return types.
I accept that you can't do this, but I'd like to be able to preserve the semantics of what I'm. trying to do, which is to have an untyped version that deals with Object, but a typed version in derived classes that knows about the specific type T.
Interface And Graphics :: Saving An Image To A Folder (A Generic Error Occurred In GDI+)?
Jun 24, 2011I have a problem when trying to save a picture box image ( I am using vb2008 express edition)When i load my windows form I create a folder called images and the current date (eg images 24062011) using the following code.
Code:
Dim fold As String = "images" & " " & Format(Now(), "ddMMyyyy")
If My.Computer.FileSystem.DirectoryExists("C:usersmickdesktop" & fold) Then
MsgBox(" file exists")
[code].....
this works fine and creates the folder on my desktop. I then load an image into a picturebox and try to save it using the following code which is where the problem starts.
Code:
Dim filename As String = Format(Now(), "ddMMyyyy")
Dim imagename As String = "image"
Dim fileext As String = Drawing.Imaging.ImageFormat.Bmp.ToString
[code].....
so my problem is why does the 1st statement give me the error as surely as I have declared that fold = the folder name then that path should be correct, as the program is set to save the image automatically, not using the savefiledialogue I don't want to have to manually type in the folder name every time I use the program.
VS 2008 Generic Error Occurred In GDI+" - Saving Image From Picture Box?
Apr 3, 2009I've written a simple application to encrypt an image (jpeg file) based on a password as a challenge to a mate of mine who reckons he's an ace hacker.I can encrypt the image no problem but when I try to save it using
[Code]...
I get "a generic error occurred in GDI+" raised. Googling reveals a few hits for this problem but seemingly mostly related to using databases rather than the file system.
Has anyone come across this? I don't want to paste all my code here in case my nemesis is watching, however basically I'm getting a reference to the PictureBox's Image property and manipulating the pixels using GetPixel and SetPixel, and then setting the picturebox's image property = my modified bitmap.
I understand that the error is generally related to the bitmap not being ready to be saved - is there anything specific I need to do to "close" the bitmap so it can be saved?The strange thing is that I'm sure this was working earlier today and now seems to have arbitrarily stopped working.
.net - Determining A Generic Type At Runtime In Non-Generic Class
Aug 14, 2010I have a Journal that records entries for different types: Journal(Of ParentT)
[Code]....
Construct A Generic Interface Class With Generic Functions
Nov 25, 2011I am trying to construct a generic interface class with generic functions. My goal was to use this to implement multiple worker classes for database interaction that have the same basic functionality. Each class will deal with different object for example, category, product or supplier but unless the the functions in the interface are generic that this won't work.This is the interface code that I have but I don't know if I have done it correctly. [code]
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