OpenFileDialog showing a blank surface

Israel

Hi!

I put on my form the "openFileDialog", a "textBox", a "pictureBox" and a "Button". What I need? When I click on my button its shows all directories and files. Then I can select one foto and its put it on the "pictureBox". Until there its working well. But what I realize?

After to see everything working correctly... Without closing my current form when I realize its not the right image to put. What I do? I want to change it. Then when I click another time on my button... I see my "openFileDialog" showing me a blank surface without directories and fotos as before. Then I have to close it again completly my form to do the same process to show correctly.

Please look on my code (Its works well just that problem as I explaned):

private void btnOpenFile_Click(object sender, EventArgs e)

{

if (OpenFileDialog.ShowDialog() != DialogResult.Cancel)

txtSource.Text = OpenFileDialog.FileName;

else

txtSource.Text = "";

OpenFileDialog.Title = "Open Image";

OpenFileDialog.Filter = "jpg files (*.jpg)|.jpg";

//if (OpenFileDialog.ShowDialog() == DialogResult.OK)

//{

pictureBox1.Image = Image.FromFile(OpenFileDialog.FileName);

}

8 Replies

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Vulpes12y ago
Accepted answer
Try:

private void btnOpenFile_Click(object sender, EventArgs e)
{
OpenFileDialog.Title = "Open Image";
OpenFileDialog.Filter = "jpg files (*.jpg)|.jpg";
OpenFileDialog.RestoreDirectory = true;

if (OpenFileDialog.ShowDialog() == DialogResult.OK)
{
if (OpenFileDialog.FileName == txtSource.Text) return;
txtSource.Text = OpenFileDialog.FileName;
if (pictureBox1.Image != null) pictureBox1.Image.Dispose();
pictureBox1.Image = Image.FromFile(OpenFileDialog.FileName);
}
}
Vulpes12y ago
You need to set the PictureBox's SizeMode property to either StretchImage or Zoom.

You said before that this didn't work but that may have been because you were creating a new PictureBox rather than using the original one.
Israel12y ago
oooooooh, my God! Its working now Vulpes. You know what's the problem? It's was in the properties as you told me before last time. I put this line in the InitialDirectory = "jpg files (*.jpg)|*.jpg" But now how the image can be resized automatically in the pictureBox when loaded?
Vulpes12y ago
I have tried it but it's working fine for me (VS 2010).

It sounds to me as though there's some sort of bug.

I did a search and found this thread:

http://www.vbforums.com/showthread.php?620646-RESOLVED-Openfiledialog-now-blank

The suggestion there was to re-install VS so I'd do that.
Israel12y ago
Not I didnt set the OpenFileDialog. I am not sure why its happening like that. If you can just try it then you will see.
Vulpes12y ago
Have you set the OpenFileDialog.InitialDirectory property anywhere?
Israel12y ago
@vulpes
Thanx for your codes. But its still shows the blank surface in the OpenFileDialog and I cant see directories and files.

@Dipankar Biswas
This your codes:
When the OpenFileDialog it's open I can see all directories and files. But when the pictureBox receive the image without resizing himself inside in the box. I try to choose in the properties SizeMode = StrechImage. But nothing!

using (OpenFileDialog dlg = new OpenFileDialog())
{
dlg.Title = "Open Image";
dlg.Filter = "jpg files (*.jpg)|*.jpg";

if (dlg.ShowDialog() == DialogResult.OK)
{
PictureBox PictureBox1 = new PictureBox();

// Create a new Bitmap object from the picture file on disk,
// and assign that to the PictureBox.Image property
pictureBox1.Image = new Bitmap(dlg.FileName);
Dipankar Biswas12y ago
pls... ck it....