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Access PictureBox from Another Form C# [duplicate]

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How to access a form control for another form?
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Closed 7 years ago.
I'm using WinForms. I'm have 2 forms. In form1 i have a picturebox and in form2 i have a button that prints. I'm trying to build an application that will print the images from the picturebox in Form1 using Form2.
I first tried making a panel and testing if the pictures would print in form1, and it did, but the problem is when copied the printing code to form2, the code wouldn't let me access the picturebox in form1.
How do i access the picturebox in Form1 from Form2 so i cant print the images in the picturebox.
I receive error lines under this.pictureBox1.
Form2
private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
var bmp = new Bitmap(this.pictureBox1.Width, this.pictureBox1.Height);
this.pictureBox1.DrawToBitmap(bmp, this.pictureBox1.ClientRectangle);
e.Graphics.DrawImage(bmp, 25, 25, 800, 1050);
}

You can make your PictureBox from Form1 available to Form2 by passing a reference to it as a property.
I'm not sure how you have your forms set up for loading. But if you are using a Main form that manages Form1 and Form2 you can do something like the following. If you do not have a Main form then this should at least get you on the right track.
Form1
public PictureBox ThePicture
{
get {return this.pictureBox1; }
}
Form2
private PictureBox _thePicture;
public PictureBox ThePicture
{
set { this._thePicture = value; }
get { return this._thePicture; }
}
private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
if (this.ThePicture != null)
{
var bmp = new Bitmap(this.ThePicture.Width, this.ThePicture.Height);
this.ThePicture.DrawToBitmap(bmp, this.ThePicture.ClientRectangle);
e.Graphics.DrawImage(bmp, 25, 25, 800, 1050);
}
}
Main Form
Form1 form1 = new Form1();
Form2 form2 = new Form2();
form2.ThePicture = form1.ThePicture;

Try to do so:
//Tente fazer assim:
public Form1()
{
InitializeComponent();
}
public Image getImagePic
{
get
{
return this.pictureBox1.Image;
}
}

C# mouse event for class object

First - I'm a graphics designer - not a programmer :/
I'm trying create simple aplication (C# windows Form application) with option to add some objects (PictureBox) and allow user to drag those PicturesBoxes on form (change their positon after adding to form).
I can do it for one PictureBox, but can't add function to all dinamic created objects :/
I have something like that for standard Picturebox4
public bool moveDetect = false;
private void pictureBox4_MouseDown(object sender, MouseEventArgs e)
{
moveDetect = true;
}
private void pictureBox4_MouseUp(object sender, MouseEventArgs e)
{
if (moveDetect)
{
Point pozycja = new Point();
this.Cursor = new Cursor(Cursor.Current.Handle);
pozycja = this.PointToClient(Cursor.Position);
pictureBox4.Location = pozycja;
}
}
Does anyone know any tutorial showing how to add function like above to my simple class "myPictureBox : Picturebox"
My class is:
class myPictureBox : PictureBox
{
public bool moveDetect = false;
// constructor
public myPictureBox(int w, int h, string name)
{
this.Width = w;
this.Height = h;
this.Image = Image.FromFile("../../Resources/" + name + ".png");
Debug.WriteLine("Created ...");
}
}
Constructor works good and show "Created..." in output. Cant add function to all objects :/
Thanks and Regards ;)

If I understand correctly, your code works fine with the event handlers MouseUp and MouseDown when you are working with PictureBoxes that you create at design time using the designer.
You can add these same event handlers to controls that are created dynamically when you instantiate them:
MyPictureBox dynamicPicBox = new MyPictureBox(800, 600, "JustATest");
dynamicPicBox.MouseDown += pictureBox_MouseDown;
this adds an event handler that maps to the method pictureBox_MouseDown
private void pictureBox_MouseDown(object sender, MouseEventArgs e)
{
moveDetect = true;
}
Since your custom class is derived from PictureBox, it should recognize this type of event handler.

Display Image in picturebox [closed]

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I'm using windows forms C#, I have 2 forms the 1st form contains a menuItem and a pictureBox, when the menuItem is clicked the 2nd form appears. The 2nd form also contains a button, I want when I click the button in the second form, a bitmap image appears in the pictureBox of the 1st form.
this is the menuItem event handler, it's supposed to open the other form and load an image in the pictureBox (when the button in the 2nd form is clicked)
private void imageToolStripMenuItem_Click(object sender, EventArgs e)
{
Form3 win = new Form3();
win.ShowDialog();
pictureBox1.Image = myNormal.bmp;
// displaying.Displaybmp(pictureBox1, b);
pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
}
'myNormal' is a class which contains bitmap image.
I don't know why the pictureBox doesn't load the image.

Create the Interface first to invoke the method in form1.
public interface IMyForm
{
void ShowImage(Image image);
}
Then implement that interface in your Form1 and assign the image to the picture box in implemented method ShowImage(Image).
public class Form1 : Form, IMyForm
{
public void ShowImage(Image image)
{
this.PictureBox1.Image = image;
}
private void menuitem_Click(object sender, EventArgs e)
{
Form2 frm2 = new Form2()
frm2.Show(this); //Assign the owner as current form
}
}
Now, write some code to invoke the method in Form1. Create the object of IMyForm and assign the value from this.owner property.
//Form2
private void button1_Click(object sender, EventArgs e)
{
IMyForm frm = (IMyForm)this.owner;
frm.ShowImage(new Bitmap(#"D:\myImage.jpg"));
}
If you don't wish to you Form.Show(owner) method then you can get the available form object in button click event by Application.OpenForms[] Form Collection.
IMyForm frm = (IMyForm)Application.OpenForms("Form1");
frm.ShowImage(new Bitmap(#"D:\myImage.jpg"));

Here is a sample from msdn :
private Bitmap MyImage ;
public void ShowMyImage(String fileToDisplay, int xSize, int ySize)
{
// Sets up an image object to be displayed.
if (MyImage != null)
{
MyImage.Dispose();
}
// Stretches the image to fit the pictureBox.
pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage ;
MyImage = new Bitmap(fileToDisplay);
pictureBox1.ClientSize = new Size(xSize, ySize);
pictureBox1.Image = (Image) MyImage ;
}
looks like you need to also provide value for ClientSize property.
please refer here:
http://msdn.microsoft.com/en-us/library/system.windows.forms.picturebox(v=vs.110).aspx

PictureBox disappears after resize my Form

I have a MainForms.cs with Ribbon, I want to put a transparent PictureBox on the top right of the ribbon (The PictureBox represent my logo).
This is what I have tried:
I put the PictureBox on the top right of the Ribbon
I set BackColor to Transparent.
I load a PNG image (Containe transparence)
I set the parent of the image to be the ribbon (and like that the PictureBox will be transparent relative to Ribbon)
Code :
InitializeComponent();
pictureBox1.Parent = ribbon1;
Until here all is working great.
My Problem :
When I resize my Form, the PictureBox disappears.
On the OnPaint fonction i reset all setting like that :
protected override void OnPaint(PaintEventArgs pe)
{
this.Activate();
pictureBox1.Visible = true;
pictureBox1.Show();
pictureBox1.BringToFront();
}
But nothing makes the Picturebox appear. Please, can you tell me what i missed.

I downloaded the DLL that you are using and created a small test example. What I noticed is the Parent property of the PictureBox was set to null. By adding the Parent back to the Picturebox in the OnPaint event I was able to get it working if the size of the Form was growing, but would disappear when the Form size was reduced. When I put the same code in the OnResize EventHandler it works like you would expect.
public partial class Form1 : Form
{
PictureBox pictureBox1 = new PictureBox();
public Form1()
{
InitializeComponent();
pictureBox1.Image = Image.FromFile(#"C:\temp\test.jpg");
pictureBox1.Parent = ribbon1;
pictureBox1.Location = new Point(this.Width-pictureBox1.Width,10);
}
protected override void OnResize(EventArgs e)
{
base.OnResize(e);
if (pictureBox1.Parent == null)
{
pictureBox1.Parent = ribbon1;
pictureBox1.Visible = true;
pictureBox1.Location = new Point(this.Width - pictureBox1.Width, 10);
}
}
}

C# WinForm redirect draw to bitmap, nothing to screen

I'm wondering if there is any way to disable screen-drawing for a winform and only draw to a bitmap. What I'm actually trying to achieve is to create a "live image" based on a form but without having to actually having the form visible.
I tried DrawToBitmap while the form was minimized, but this was highly unstable, didn't work and finally crashed.

Ok so I ended up solving this in a bit different way. Following code gets you a Live Messenger-like taskbar thumbnail by drawing you hidden UserControl to a Bitmap and using that as the thumbnail.
Holding your mouse over the taskbar icon still gets you some small thing in the upper left corner. Doesn't bother me but please tell me if you know how to get rid of it!
Make sure you have the Windows API Code Pck from Microsoft to run this http://archive.msdn.microsoft.com/WindowsAPICodePack/Release/ProjectReleases.aspx?ReleaseId=4906
namespace AndreasCoroiu.Controls
{
public partial class TaskbarThumbnail : UserControl
{
TaskbarForm taskbarForm;
public TaskbarThumbnail()
{
InitializeComponent();
if (!DesignMode)
{
taskbarForm = new TaskbarForm();
TabbedThumbnail preview = new TabbedThumbnail(taskbarForm.Handle, taskbarForm.Handle);
TaskbarManager.Instance.TabbedThumbnail.AddThumbnailPreview(preview);
preview.TabbedThumbnailBitmapRequested += (o, e) =>
{
Bitmap bmp = new Bitmap(Width, Height);
DrawToBitmap(bmp, new Rectangle(new Point(0, 0), bmp.Size));
preview.SetImage(bmp);
e.Handled = true;
};
}
}
public void Show()
{
taskbarForm.Show();
}
private class TaskbarForm : Form
{
public TaskbarForm()
: base()
{
FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
}
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
Size = new System.Drawing.Size(0, 0);
}
}
}
}