Coding image change

[ibanezFreak87]

How would one make a button_Click make the background image change to a different jpeg?

 

[JuggaloBrotha]

it'll depend on how you want the images to be handled (imagelists or openfiledialog) but to change the form's image simply use the backgroundimage property but i think you're talking about the user's desktop background in which case i couldn't tell ya, but i do know a simple google search should lead you to the answer in a short amount of time maybe i'll do a quick search when i get the chance

 

[ibanezFreak87]

Yeah I tryed to google it, but i'm a beginner and i'm just codeing for a 101 class I'm taking in school - So i didn't really understand most of the code but what I want to do is have the program run - then the user click a button - and for the background image to change.

 

[vis781]

As juggalo Brotha just queried, what do you want to change the background image of.. i.e The button, the form, the desktop etc...

 

[ibanezFreak87]

Oh sorry, I want the click of a button to change the form's background image

 

[vis781]

In the click event of the button..

Me.BackgroundImage = image.fromfile(the file path to the image you want to display)

or if in an imagelist...

me.backgroundimage = imagelist.images(the index of the image you want to rtrieve)

or if an embedded resource...

dim Bmp as new bitmap = system.reflection.assembly.getexecutingassembly.
getmanifestresourcestream(filename)
 
me.backgroundimage = bmp

 

[ibanezFreak87]

I tryed all the codes and I can't get it to work. What I want is to make a button on form1 -after the button is clicked- I want the form1 to take an certain image I have on the computer's harddrive to be displayed as the backround. Is that possible?

thank you

by the way, the image I want is a jpeg. if that matters.

 

[vis781]

Try calling Me.Invalidate after the code i've shown you, This wil force a repaint of the form.

 

[ibanezFreak87]

unfortuantly, still doesn't work

 

[vis781]

I don't understand, what exactly is happening? Is it throwing an exception? Can you post the code for me to take a look at?

 

[ibanezFreak87]

The code I input in the program is :
Me.BackgroundImage = Image.FromFile(C:\kosherdelight.jpeg)
the program underlines "C" and "\"

 

[JuggaloBrotha]

sorry i havent been around the past few days here to continue helping

when dealing with strings you need to have the double quotes at the beginning and end of the string contents, so change this line:

[SIZE=2][COLOR=#0000ff]Me[/COLOR][/SIZE][SIZE=2].BackgroundImage = Image.FromFile(C:\kosherdelight.jpeg)[/SIZE]

to:

[SIZE=2][COLOR=#0000ff]Me[/COLOR][/SIZE][SIZE=2].BackgroundImage = Image.FromFile("C:\kosherdelight.jpeg")[/SIZE]

and of course if you want it to be more flexible you can use an OpenFileDialog to pick the location of the image and set it as the form's background:

Dim ofd As New OpenFileDialog
With ofd
  .Filter = "Jpeg (*.jpg)|*.jpg|GIF (*.gif)|*.gif"
  .FileName = "C:\"
  .Title = "Locate Image"
  If .ShowDialog() <> DialogResult.Cancel Then Me.BackgroundImage = Image.FromFile(.FileName)
End With

 

[Pozi]

Is there a way to locally load the image into the form so a file path is not needed for loading the new background image??

 

[JuggaloBrotha]

a file path is always needed (this is true for all programming languages) but with VB if the full path is not specified, it'll look to the same folder as the executable (or dll) that's looking for it

 

[vis781]

You could also embed this image in your resources file then access it at anytime using reflection. No file path needed at all.