How do get reference to the error image that is laoded by default if there is no image when using imagelocation I am trying to build an IF statement to only do something if picbox is not = error image
If PictureBox1.Image <> Image.error.system.drawing.Bitmap Then
I'd like to verify if an image control has an image loaded . If it does , I want to unload that image (and load no image) , but if the image control has no image loaded , I want to load an image . Is it possible ?
If ImageMY.Image.Equals(Nothing) Then
ImageMY.Image = System.Drawing.Image.FromFile("C:ImageBlaBlaBla.jpg")
Else
[code].....
i currently have 2 pictureboxes, 1 textbox, 1 timer .picturebox1 is at location 0,0, picturebox2 is at location 200,0..by using the following code, i can paste a url from a image in the textbox and have it display properly in my picturebox1, set to zoom ..
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
PictureBox1.BackgroundImageLayout = ImageLayout.Zoom
Timer1.Start()
End Sub[code]......
Here is the code:
'Add images column to DataTable.
ds.Tables(0).Columns.Add("Image", GetType(BitmapImage))
'Create array of image paths.
Dim currentDir As String
[code]....
I am a little bit confused about PictureBox.ImageLocation and PictureBox.Image = Image.FromFile().
The problem: If I use PictureBox.Image = Image.FromFile() then I am not able to do something with the file unless I dispose the PictureBox (which I most likely don't want to do).
If I use PictureBox.ImageLocation instead, I get the same result but I am still able to delete / move / overwrite the picture file.
So, just to get confused entirely: What are the differences between PictureBox.ImageLocation and Image.FromFile? When should I use the first, when should I use the second?Listing SPEC's is not a review !!! :-)
I'd like to hide the contents of a picturebox while still preserving it's imagelocation, width, height, borderstyle, top, left, and sizemod properties. Is this possible?
View 2 RepliesExecute the default image viewer when i pass the path of the image.
View 2 RepliesI am trying to make visual basic click a pop-up with a image as a reference and while using a loop so that it will repeat the clicker so that if the program were to close again and the pop-up came up again it would automatically click the image and loop so on and so forth
View 5 RepliesI m dynamically assigning data to the ToolstripButton like its Text & Image. At one stage i want it to be cleared i.e. ToolstripButton.Text="" and ToolStripButton.Image = To its default image (The image which
is available on design time or ToolStripButtons default image byVS2008)..
Now I have inserted a picturebox and now I have to get the color value of a pixel of the image which I load to it.
View 5 Repliescode which brightens an image loaded into a picture box.
The form has two picture boxes, one for unprocessed image and the other for processed image.
A track bar is to be used to increase the brightness and darkness.
when i upload image then 2 enteries can loaded. 1 is image entry and 1 is blank entry. i dnt know why blank entry is loaded.
[Code]...
I am trying to read a 16bit binary file (tif image) and pixel values of the image ranges from 1200 to 4500. I tried to use BinaryReader using ReadUInt16 but I get EndOfStreamException Unhandled error. ReadByte method works fine with an 8bit tif file. I do not know how to read a 16bit image file using binaryReader. Shouldn't I use ReadUInt16 since values of pixels range from 1200 to 4500?
[Code]....
I tried to use the codes below to retrieve Image Width programmatically, but it did not work. [code]...
View 3 RepliesI am trying to verify that an image has been loaded into the picturebox1. I am loading the image from the web and need to verify it has arrived before I can save it to disk. If I save it to soon I will save nothing and that will crash the app. I have tried to use 'if PictureBox1.image = nothing then' ... 'End If', but that isn't a valid check. I can obviously not check picturebox1.image if it is empty or has an image.
So the question is, how do I verify that the file has finished loading?
A) can i set the minimum width of a new created tab ?
B) can i replace the default tab shape with an image?
C) is there a simple why to drag tabs to change their orders in the tab list like most modern application do or i have to code it ?
I made one application form in vb.net and access as database,in this form there is a imagebox field where i can upload the images.i put one default image when the form gets loaded. i want to save this default image if i dont upload an image.And another problem i'm facing is i want to deploy my project on another system but when i'm deploying my project, the database is not connecting so i've to add database separately on the other system even though i'm adding database during setup.May be i'm going somewhere wrong.how should i add database while setup and save the default image.
View 4 RepliesWhat value should I put as a default value for Image Data type field on a record?
View 4 RepliesDoes we have a good & full image processing function in vb.net? If not. what is best reference for image processing in vb.net?
View 2 RepliesI've got a little problem. I'm trying to choose a background for the program based on Settings, but I'm getting a Null Reference Exception and I don't know what I'm doing wrong. Here's the
[Code]...
Public Class Form1
Dim x As Integer, y As Integer
Dim img As Bitmap
Dim pixelColor As Color
Public Function getpixel(ByVal x As Integer, ByVal y As Integer) As Color End Function Private Sub find_img_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles find_img.Click
[Code]...
whenever i load the image, i have to load it a second time to get the colour, or if i load a new one, i get the colour from the previous image, any ideas as to why?
How to save image from webbrowser loaded page to hdd (after loading save to hdd)?
View 2 RepliesIf i type this in:
CODE:
I get an error: Error 1 Operator '=' is not defined for types 'System.Drawing.Image' and 'System.Drawing.Bitmap'.
I have also used 'is' instead of '=' but that doesn't work either.
I created a new cursor (it works properly, I tried it in windows 7) but is not working for me in the program.I took the Windows cursor (aero_helpsel_xl, from C:WindowsCursors) and it appears to me the same error.i use with this code:
Me.Cursor = New Cursor("Patch..")
The problem say:: "{"Image format is not valid. Image file may be corrupted.
Parameter name: stream "}"
edit: I realized what the problem ... It can read only cur files with 24-bit color and lower - but it shows only two colors: black and white.
I have an app that loads a jpg into a picyure box, then updates exif data in exifworks classThe problem is that when I save the image(from image used for picture box) or class (to save exif data) then try to delete, sometimes I get success, others it won't allow delet I have gone to the trouble of using gc.collect, do events, put the delete in a timer & wait for the delete before continuing & still get the problem
View 7 RepliesWith a button click event, how do I make a picture box image property switch to a random image from the resources folder?
View 1 Repliesi want to save image in ms access 2000 database & i want retrive it in a crystal report in vb.net 2005
View 8 RepliesI've been searching for hours tonight searching existing posts, other websites and all i can find are examples of how to capture a image from a webcam.Does anyone have any code that simple talks to the camera device via WIA, and then saves every image found on the device to a hard drive?I found this code below. Credit i cant tell you as i have a bunch of different flavors of code, but this only saves the file as a tmp file, and not the actual image file i expected after selecting?
Imports System.Drawing
Imports System.Runtime.InteropServices
Imports WIALib
[code].....
In VB6 you could BITBLT things around before refreshing the screen. In .NET, I'm aware of DrawImage, but that can only be done on a paint event rather than before anything gets painted. The issue I have is, I need to open several files with image data in them and then build a bigger image with those smaller images. Before I could open them, BITBLT them to a Buffer. As far as I can tell .NET offers no way to do this as the only function I've been able to find (DrawImage) only works within the paint event. Is there still a way to do this in VS08 or no?
View 6 RepliesI am using ITextSharp and am trying to set the alignment of an image.
In C# (as per all the examples) it is:
code:
I cannot work out the equivalent of the "|" in VB.