GDI+ Error When Saving PictureBox Image To MemoryStream
Jun 22, 2010
I'm getting GDI+ error when saving picturebox image to the database. My database is sql server with image datatype. Ideally when I browse image file to the picturebox then save using following code
How come this doesn't work when I try to press a button to save a picturebox to a file?
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click PictureBox1.Image.Save("C:Test.png", System.Drawing.Imaging.ImageFormat.Png)
I am having a bit of difficulty saving an image from a picture box through vb.net.Basically when user clicks the save button, it saves the picture in the picturebox to the C drive, Here is my code so far:
Private Sub SaveImageButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveImageButton.Click PictureBox1.Image.Save("C:\Drawingce.
Im trying to save the image from my picturebox to a file. Ultimately im looking to use a save file dialog but im just testing at this point. Im working with the following line of code.
I have some problem about image sizing, citing the process: I've create 2 button and picture box. The button1 load opendialog to load image then the image will be viewed at picturebox and the button2 will save to sql table. My problem is how could I resize the image before saving to sql table.
My code: Button1_click Picturebox1.image=image.fromfile(opendialog.filename) end Button2_click --before saving dim myImage as Image=Picturebox.image How could I resize the actual dimension of image?
I have a form containing a listbox showing a list of image names. It's bound to the database table. When an image name is clicked it shows the image and imagename in a picturebox and textbox respectively. When no image is selected in the listbox, a new record can be inserted by browsing a new image in the picturebox by an openfiledialog, writing the imagename in the textbox and pressing the OK button. When an image is already selected, the record can be updated by pressing the same OK button. The data is saved into MSSQL Server 2005. Corresponding table fields are Keycode int autono, logoname nvarchar(50), logo image.Now the problem, when I insert a new data with an image everything goes fine but whenever I try to update an existing data with an image it throws an exception- 'A generic error occurred in GDI+.' at the following line- 'pic.Image.Save(ms, pic.Image.RawFormat)'. Surprisingly when I update an existing data without any image in the picturebox no exception is generated. I have crossed checked it and seems that the problem is just at one point- 'Updating the image from the picturebox'. My code to insert/update the data by OK button and to populate it by listbox doubleclick follows:
Code: Private ms As MemoryStream Private arrImage() As Byte Private conn As SqlConnection
I have a form containing a listbox showing a list of image names. It's bound to the database table. When an image name is clicked it shows the image and imagename in a picturebox and textbox respectively. When no image is selected in the listbox, a new record can be inserted by browsing a new image in the picturebox by an openfiledialog, writing the imagename in the textbox and pressing the OK button. When an image is already selected, the record can be updated by pressing the same OK button. The data is saved into MSSQL Server 2005. Corresponding table fields are Keycode int autono, logoname nvarchar(50), logo image.Now the problem, when I insert a new data with an image everything goes fine but whenever I try to update an existing data with an image it throws an exception- 'A generic error occurred in GDI+.' at the following line- 'pic.Image.Save(ms, pic.Image.RawFormat)'. Surprisingly when I update an existing data without any image in the picturebox no exception is generated. I have crossed checked it and seems that the problem is just at one point-
I have a form containing a listbox showing a list of image names. It's bound to the database table. When an image name is clicked it shows the image and imagename in a picturebox and textbox respectively. When no image is selected in the listbox, a new record can be inserted by browsing a new image in the picturebox by an openfiledialog, writing the imagename in the textbox and pressing the OK button. When an image is already selected, the record can be updated by pressing the same OK button. The data is saved into MSSQL Server 2005. Corresponding table fields are Keycode int autono, logoname nvarchar(50), logo image.Now the problem, when I insert a new data with an image everything goes fine but whenever I try to update an existing data with an image it throws an exception- 'A generic error occurred in GDI+.' at the following line- 'pic.Image.Save(ms, pic.Image.RawFormat)'. Surprisingly when I update an existing data without any image in the picturebox no exception is generated. I have crossed checked it and seems that the problem is just at one point- 'Updating the image from the picturebox'.My code to insert/update the data by OK button and to populate it by listbox doubleclick follows:
When i use the code above and chack the picture after save it shows me the "x" picture just before the picture is loaded i have had a look at picture.waitonload
What my app is doing is converting a text to image,using this [code]...
So the image appears in the picturebox,but when I try to save it as .jpg or .png i get the GDI error.Can someone give me a working code for the most of the imaging formats? I mean .jpg,.png,.gif,the pixar format and all that stuff.
Ive a picture box on a webform. I want to load a picture into from a memorystream. The code im using :
If Me.ComboBox1.SelectedValue.ToString.Trim <> "System.Data.DataRowView" Then Dim bmpTmp As Drawing.Bitmap = Drawing.Bitmap.FromFile(Me.ComboBox1.SelectedValue.ToString.Trim)
[Code]....
What I'm trying to do is convert a tiff image to a gif and display it in a picturebox on a webform. The source file is deffinatly be found as the commented out line which saves the file to the c: drive works perfectly. However I cant seem to get the picturebox to load with the memory stream.
I wrote a piece of code that grabs a fileupload, puts it into a memory stream, converts the main pic, and thumbnail pic, then saves them as jpegs, then updates the database.
Everything works fine, except one little glitch. If the DPI is above 300 then the image doesn't save right. It get's pixelated and blury.
here is the code.
Dim fileLen As Integer # Dim myStream As System.IO.Stream # Dim ImgContentType As String
I use WPF and my program has images in a DLL resource file. I have this well working way to read in images from disk:
Private Function GetImageFromFile(ByVal fileName As String) As BitmapImage Dim buffer As Byte() = IO.File.ReadAllBytes(fileName) Dim memoryStream As New IO.MemoryStream(buffer)
[Code]....
Now, how can I get images in this MemoryStream-way from a DLL resource?
The basic problem: If I use simply the "bitmap.UriSource = whatever uri" way and load many images in sequence like an animation it builds up the memory. I tried with the above memorystream way and it worked perfectly fine, but then I store my images in a dll and I don't know how to do this trick. If anybody knows how to read many images from a managed dll without building up the memory
The Clipboard class has very handy methods to check contents, like 'ContainsImage' and 'ContainsText'.How do I check if a MemoryStream contains an image or a text?
I have a picturebox that displays an image on a form. The image thats displayed is from an image folder and has 8000+ images. The images pull in just fine and change as the text in the me.txtPartNo.text changes.[code]...
I wanna make an application to monitoring lan PC webcams,i have a appwinstyle.hide application that acess to webcam and copies a frame from it 'gets a frame to clipboard
i tried to save image into my database, it saves without error but when i tried to check if it saves in mysql, the data about my picture id save, but the image i save return a value of 0.
This is interesting. We've spent the last day attempting to patch a problem with the following (legacy) code that continues to grow its process size. This is done in Visual Studio 2003.We have a form on which we display an image (from MemoryStream) and some text and a button. Nothing fancy. Looks something like this: Protected Overrides Sub OnLoad(ByVal e As System.EventArgs)
[Code]...
Now. We've tried very numerous things. We've discovered that Disposing does nothing, and, indeed, the IDisposable interface doesn't actually touch memory. If we don't create a new CJ5Form_PTOperatorAcknowledgement form each time, the process size does NOT grow. But loading a new image into that form still causes the process size to continually grow.
I 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.
I'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.
I'm searching for a solution to resize image(jpg) being passed in from an array in Picturebox Control on .NETCF 2.0 in VB.NET without resorting to using the opennetcf library, is it possible?
I have tried to realign the image by down and right one pixel, but still only part of the first row and column are visible when zoomed.I can't find exactly what I'm looking for online.
My computer is an HP-Pavillion dv9600 Notebook PC.
OS: Windows Vista SP2 32-bit
The following code reproduces the problem:
Public Class PictureBug Dim pxlColor As Color Dim img As Bitmap = New System.Drawing.Bitmap(My.Resources.TestBug[code]......
Any thoughts on what might cause a thread error like this?Error:InvalidOperationException was unhandledCross-thread operation not valid: Control 'Form1' accessed from a thread other than the thread it was created on.
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i have an image in an bytearray. I convert thiy bytearray to an image an do a resize on it which works fine. But after that i want to convert it back to a bytearray and then i get a "Value Cannot be null Parameter name: encoder" Exception when trying to do a IMG.SAVE(MEMORYSTREAM, IMAGE.RAWFORMAT)
I drew an image in a picturebox with the image height as picturebox height and image width as picturebox width. The image is placed somewhere on the center of the picturebox. My intention is to scale the image to fit to the picturebox.