Display An Image (from MemoryStream) And Some Text And A Button?
May 21, 2009
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.
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Mar 11, 2010
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?
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Apr 17, 2009
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.
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Dec 5, 2010
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
[Code].....
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Oct 24, 2011
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
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Aug 10, 2009
I dynamically create buttons on a form and use the button text as ids so that I can pass that to an SQL query to pull saved data about that button when necessary, but I also use an image over buttons that have information saved about them. What I need to know is how do I keep the text on the button from appearing when there is an image assigned to that button? By default vb.net shows both the text and the image and no TextImageRelation values allow for the image to take precedence. I tried changing the text color to transparent, but the outline of the text is still visible through the image. Is there anyway to keep the text value as it is but just show the image on the button?
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Mar 31, 2011
I have this program that extracts ole objects from my access database and tries to save them as jpeg images. I keep getting an error on this line:
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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
[Code]...
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May 6, 2012
I need to display two images when the button is clicked. First the user will browse for the two images and after clicking the third button it should display the two images. I have this code so far. I'm a complete newbie in vb
Dim dialog As New OpenFileDialog()
If DialogResult.OK = dialog.ShowDialog Then
TextBox2.Text = dialog.FileName
End If
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Sep 12, 2009
I'm new to VB.NET BTW. I designed a form and radio buttons and a submit button with a picture box ! Every radio button selected will display the image related to it in the picture box !
So, we have
O smile
O sad
O mad
O happy
O ...etc
When pressing the submit, the selected radio button will display a face of the mood !
Here is my code.
If RadBtnSmile.Checked Then
PicBxMood.load("smile.gif")
End If
If RadBtnSad.Checked Then
PicBxMood.load("sad.gif")
[Code] .....
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Jan 6, 2011
I am building a vb.net application with VS2010. The aim of the application is to change sln. files from VS2005/2008 versions into VS2010.I am using a Form with 2 text boxes and 2 buttons. When I click the 1st button it reveals the sln file in the text box. Then i have a 'convert' button that I want to use to 'convert' the file that appears in the first text box. I have come quite far with the source code but am just a bit puzzled as to how i can retrieve the VS2005 sln files and to get the 'convert' button to display the text in the 2nd text box.[code]
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Dec 14, 2010
How can i draw text(demo demo) on exist image from top right corner to bottom left corner of exit image (on photo) in windows based applicaiton using vb.net.
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May 20, 2010
I want to display image next to the text in each row in a datagridview. I have searched the net in the past 1 hour, but no big success. I know, that I must override the cellpaint event, but how?
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Jun 28, 2011
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)
[Code]....
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Dec 13, 2010
How can i draw text with 180 degrees format on image in windows based application using vb.net.
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Mar 24, 2010
My program parses chat room text. In the room there are smileys that get displayed. What I'm trying to do is parse out the image URL, download the image and put the smiley in the correct spot between the text of the message.I can do the parsing and downloading of the image into the datagridview but this only works of the column is set as an image column. Obviously due to the nature of the program I need to be able to put both text and images into the same cell. How can I do this?
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Feb 21, 2012
ok i have image that i bind info in it and i want to read the info now from file (FileStream) its workbut i want to do it not from file so i need to use MemoryStreamhere the example that work and how i do it now how i make it work with MemoryStream (with byte = My.Resources or PictureBox1.image)
Using FS As New IO.FileStream(image, IO.FileMode.Open)
FS.Seek(0, IO.SeekOrigin.End)
While Not FS.ReadByte = Asc("|")
[code].....
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Jul 24, 2010
I have seen many programs with a little icon/image next to their text on their button. I would like to know how thats done. I dont mean to hover my button and make different effects, all I want is a little icon/image next to the text in my button.
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Apr 23, 2010
I have a DataGridView in a Winforms application containing a collection of items. Each item has an image and various other details. I know it is possible in WPF, but can you get a tooltip to display an image and a more structured set of details then just plain text?
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Dec 13, 2010
How can i display text on image with 270 degrees format in windows based application using vb.netv
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Jan 23, 2010
Simple question I couldn't find in the book or online. I have a Button which needs to have permanent text set to 'Calculate' and 'Section' on separate lines. The 'Multiline' option I have seen mentioned does not appear in my properties. I can't 'show the code' as I think it is a properties setting.
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Jan 28, 2010
Using XP and VB 2008 Express for development of Widows Forms App.I am setting a button's .text to "" and then assigning a bitmap with some text written on it to the button's .image. Everything looks great on the development compter, but is almost unreadable on test computers using Vista and Windows 7. This despite trying a number of different combinations of (standard?) font family and size (including Arial, Verdana, Microsoft Sans Serif). Why?
Details....I have a button on a form (32 pixels x 32 pixels).I set the button.text field to "". I create a bitmap a little smaller than the button, and DrawText on it (I can't simply use the button.text field because I want to place text in different areas of the button and draw special characters.I use the following code to create the bitmap:
m_bmpDrawingSurface = New Bitmap(30, 30, Drawing.Imaging.PixelFormat.Format32bppArgb)
Dim objGraphics As Graphics
objGraphics = Graphics.FromImage(m_bmpDrawingSurface)[code]...
I wonder if somehow fonts are being anti-aliased or otherwise cleaned up by the system on the development computer, but not on the other computers. I also wonder if I should be creating just a simple 30 pixel x 30 pixel bitmaps, or perhaps should be trying somehow to get the buttons 'device context' or something. Or, is there an alternative to DrawString that draws text more intelligently than just setting the nearest pixel either black or transparent, which is what seems to be happening (ie, no anti-aliasing or creation of shades of gray). Maybe another pen? Is there an "anti-aliasing" pen?
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Oct 1, 2010
i have a class where are code the methode that i have to use in my form. i want to display on a button with a if statement a text value depending of the requirement are met. i put the code of the class here:
[Code]...
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Nov 14, 2009
I have a question regarding radio buttons. I am creating a little prog that has three separate radio button groups. After selecting one button in each group, I would like a text box to display a value. The text box value will be a number between 50 and 350 or so.
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Feb 25, 2012
form1 have four buttons, i want to set a label text in form2 according to which of the button on form1 is clicked.below is what i tried so far.on form1 each of the button click event i made it focus
Private Sub Answerbtn3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Answerbtn3.Click
Me.Focus()
Form2.Show()
and on form 2 load event i have
Private Sub FinalAnswer_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Main1.Answerbtn1.Focus Then
Label2.Text = "You choosed option '
[code]....
the above code displays only the first condition ("You choosed option 'A'"") on the label when any of the button is clicked?
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Feb 7, 2009
i wan to display the text from combobox into the textbox and clear the combobox text when click on the button.But when i select another text from the combobox and click the button, the textbox display and overwrite the previous text.How can i do so that when click, textbox display text from combobox and clear combobox text. Then click again, display the new text at 2nd line of the textbox without deleting the previous text?
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May 11, 2010
i am using vb.net 2005, in my window form i have textbox as txtbox1 and txtbox2. if i entered any text in txtbox1 and press my tab button the txtbox2 should display the same text as txtbox1 .
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Jun 6, 2011
I am here by to ask help on enhancing messageboxs. How is the way to Display a picture(like a JPG file) inside a messagebox along with text when a button is clicked?
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Nov 13, 2011
the task is to have an image move up and down when a number is entered in the text box and the start button pressed. now ive managed to get the image to move up but not to sure how id get it to go back down.the code ive used so far is
Private Sub btnJump_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnJump.Click
While picFrog.Top > 0
picFrog.Top = picFrog.Top - Val(txtSpeed.Text)
[code]....
but it comes up with a error. can someone point me in the right direction of what kind of code i should be using?
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Mar 23, 2010
I'm looking to create a simple program with 1 text field, 1 button, and an area to display what is happening and if there were any errors.My goal is to be able to delete user profiles stored on a network drive by simply putting in the users ID and hitting the button.I'll use my own id as an example:If I put mdesieno in the txt box and hit the button, I'll need the button to map to the network drive and delete mdesieno.corp and mdesieno.v2 I would like the bottom half of the window to display text like:
"Deleting User Profile mdesieno.corp" SUCCESSFUL
"Deleting User profile mdesieno.V2" SUCCESSFUL
To me this seems pretty simple, but as I said, I do not know VB yet. Is there code out there that is already written to do something like this?
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