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The size of picturebox is different than what was initialized as

Just for testing I have created a new windows forms project with a picturebox on the form and changed the size of it to 100x100. This is the InitializeComponents function:
private void InitializeComponent()
{
this.pictureBox1 = new System.Windows.Forms.PictureBox();
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
this.SuspendLayout();
//
// pictureBox1
//
this.pictureBox1.Location = new System.Drawing.Point(13, 13);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(100, 100);
this.pictureBox1.TabIndex = 0;
this.pictureBox1.TabStop = false;
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(9F, 20F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(800, 450);
this.Controls.Add(this.pictureBox1);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
this.ResumeLayout(false);
}
This is my From1_Load function:
private void Form1_Load(object sender, EventArgs e)
{
MessageBox.Show(pictureBox1.Size.ToString());
}
And this is what I get when I run the app:
Why do I get width=67 height= 65 when it is clear in init that it was meant to be 100x100?
My monitor res is 3840x2160 with change of size of text as 125% Tweaking these settings do not change the result.

Add an image reference.
pictureBox1.Image = Properties.Resources.myImage;
See what happens then, I just need more information to help...

Transparent child form in parent form with transparency and background

I have a form with background image and transparency key.
In that form I put child form which must be fully transparent to show bakground of the parent form. If I set another transparency key to child form - it do not get transparency at all, and if i set transparency key of parent form - child cut through parent form's background image.
I need to use form - not user control so thats an issue. And i dont want to set dublicate background image to child form.
Im working visually. Here's code from designer:
That is my parent
//
// Main
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.BackColor = System.Drawing.Color.DarkRed;
this.BackgroundImage = global::NWN_Tsuki.Properties.Resources.Book;
this.BackgroundImageLayout = System.Windows.Forms.ImageLayout.None;
this.ClientSize = new System.Drawing.Size(800, 665);
this.Controls.Add(this.tableLayoutPanel1);
this.Controls.Add(this.CloseBtn);
this.DoubleBuffered = true;
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
this.KeyPreview = true;
this.MaximumSize = new System.Drawing.Size(800, 665);
this.MinimumSize = new System.Drawing.Size(800, 665);
this.Name = "Main";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "Header";
this.TransparencyKey = System.Drawing.Color.DarkRed;
this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.Main_KeyDown);
this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Main_MouseDown);
this.tableLayoutPanel1.ResumeLayout(false);
this.ResumeLayout(false);
That is how I insert child into parent's panel:
private void LeftPanel_Paint(object sender, PaintEventArgs e) {
ToC toc = new ToC();
toc.TopLevel = false;
toc.AutoScroll = true;
this.LeftContent.Controls.Add(toc);
toc.FormBorderStyle = FormBorderStyle.None;
toc.Dock = DockStyle.Fill;
toc.Show();
}
Here is my Child:
//
// ToC
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.BackColor = System.Drawing.Color.Silver;
this.ClientSize = new System.Drawing.Size(428, 396);
this.Controls.Add(this.Ch7Btn);
this.Controls.Add(this.Ch6Btn);
this.Controls.Add(this.Ch5Btn);
this.Controls.Add(this.Ch4Btn);
this.Controls.Add(this.Ch3Btn);
this.Controls.Add(this.Ch2Btn);
this.Controls.Add(this.Ch1Btn);
this.Controls.Add(this.label1);
this.Name = "ToC";
this.Text = "ToC";
this.TransparencyKey = System.Drawing.Color.Silver;
this.ResumeLayout(false);
Thats the situation when child is Silver inside parent now matter that it has transparency key Silver.
If i set this.BackColor = System.Drawing.Color.DarkRed; to Child - it will pierce parent's background.
Here's some images of what i mean.
Child with other then parent transparency key
Child with same as parent transparency

I am not sure why your child form's background is piercing the main form.
There are two things you might try.
try setting both to a different color which your are most likely not going to use. Like Color.Magenta. (Altough I understand that you might have tried this already)
You should be able to set the Back color to transparent here
Button1.BackColor = Color.Transparent;

WebBrowser (win form) opacity

I have a system windows forms web browser on top of another control. The web browser has an image set.
On top of the web browser control is an inherited panel where I can control the opacity.
If I make this transparent, it doesn't show the web browser image, it shows the back colour of the control under the web browser.
Ie
Layer1 control. Back colour is blue
Layer2 web browser with image as HTML
Layer3 transparent panel
Layer3 when transparent shows layer1 not layer2
How can I make the web browser opaque so layer3 shows through to layer2 (webbrowser) ?
I have tried setting SetStyles to control opacity on the web browser.
Thanks

Short Answer:
You can't.
Real World Solution:
Have you looked into WPF?
Long Answer:
Opacity is a trick that WinForms does.
When a control is marked to be displayed transparent (or semi transparent), WinForms queries the parent object's visuals to ask "What would you have printed here had my control not existed?". From this result WinForms either displays the pixel of the control, the pixel of the parent, or a combination of the two (if semi transparent).
This becomes really apparent in a simple example:
Create a new winforms project
Create 2 labels, place them over top of each other (slighty offset)
Set both labels backgrounds to Color.Transparent
You'll see immediately that transparency takes a chunk out of the label underneath.
Example Code (All in one file, compile and run):
using System;
using System.Windows.Forms;
using System.Drawing;
namespace WindowsFormsApplication5
{
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new MainForm());
}
}
public class MainForm : Form
{
private Random random = new Random();
private Button btnRandomBackgroundColor;
private Label lblBackgroundLabel;
private Label lblTransparent;
public MainForm()
{
InitializeComponent();
}
private void button_Click(object sender, EventArgs e)
{
BackColor = Color.FromArgb(random.Next(0, 255),
random.Next(0, 255),
random.Next(0, 255));
}
private void InitializeComponent()
{
this.btnRandomBackgroundColor = new System.Windows.Forms.Button();
this.lblBackgroundLabel = new System.Windows.Forms.Label();
this.lblTransparent = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// btnRandomBackgroundColor
//
this.btnRandomBackgroundColor.Location = new System.Drawing.Point(12, 12);
this.btnRandomBackgroundColor.Name = "btnRandomBackgroundColor";
this.btnRandomBackgroundColor.Size = new System.Drawing.Size(144, 23);
this.btnRandomBackgroundColor.TabIndex = 0;
this.btnRandomBackgroundColor.Text = "Randomize Background Color";
this.btnRandomBackgroundColor.UseVisualStyleBackColor = true;
this.btnRandomBackgroundColor.Click += button_Click;
//
// lblBackgroundLabel
//
this.lblBackgroundLabel.AutoSize = true;
this.lblBackgroundLabel.BackColor = System.Drawing.Color.Transparent;
this.lblBackgroundLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 21.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.lblBackgroundLabel.Location = new System.Drawing.Point(41, 49);
this.lblBackgroundLabel.Name = "lblBackgroundLabel";
this.lblBackgroundLabel.Size = new System.Drawing.Size(184, 33);
this.lblBackgroundLabel.TabIndex = 1;
this.lblBackgroundLabel.Text = "Simple Label";
//
// lblTransparent
//
this.lblTransparent.AutoSize = true;
this.lblTransparent.BackColor = System.Drawing.Color.Transparent;
this.lblTransparent.Font = new System.Drawing.Font("Microsoft Sans Serif", 21.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.lblTransparent.Location = new System.Drawing.Point(61, 63);
this.lblTransparent.Name = "lblTransparent";
this.lblTransparent.Size = new System.Drawing.Size(251, 33);
this.lblTransparent.TabIndex = 2;
this.lblTransparent.Text = "Transparent Label";
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.BackColor = System.Drawing.Color.White;
this.ClientSize = new System.Drawing.Size(341, 114);
Controls.Add(this.lblTransparent);
this.Controls.Add(this.lblBackgroundLabel);
this.Controls.Add(this.btnRandomBackgroundColor);
this.Name = "Form1";
this.Text = "MainForm";
this.ResumeLayout(false);
this.PerformLayout();
}
}
}

Panel scroll vertically

I have a winform app in which I have a panel control.
I want to be able to scroll inside the panel and place controls vertically more then the current height of the control and then have a scroll which will help me to see all the controls, how can I achieve that?
This is the designer code as well, in case someone wants to take a look at the code:
private void InitializeComponent()
{
this.panel1 = new System.Windows.Forms.Panel();
this.SuspendLayout();
//
// panel1
//
this.panel1.AutoScroll = true;
this.panel1.BackColor = System.Drawing.SystemColors.ControlLightLight;
this.panel1.Location = new System.Drawing.Point(12, 12);
this.panel1.Name = "panel1";
this.panel1.Size = new System.Drawing.Size(267, 365);
this.panel1.TabIndex = 0;
//
// Form2
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(456, 410);
this.Controls.Add(this.panel1);
this.Name = "Form2";
this.Text = "Form2";
this.ResumeLayout(false);
}

Since you have AutoScroll = true, you shouldn't have to do anything. Any control that you place in the panel that is below the visible boundary will automatically create the appropriate scroll distance in the panel.
If you want to manually override that, set AutoScroll = false and set the size of the canvas yourself using the AutoScrollMinSize property, example:
panel1.AutoScrollMinSize = new Size(0, 1200);
You might want to consider anchoring the panel to the four sides of the form as well, or dock-fill, since it looks like a resizable form. Again, the panel will handle the scrollbar size for you.

Try this out for loading other forms in panels of MDIForm. It works perfectly.
myForm.TopLevel = false;
myForm.AutoScroll = true;
main_panel.Controls.Clear();
main_panel.Controls.Add(myForm);
main_panel.AutoScrollMinSize = new Size(0, myForm.Height);
myForm.Show();

Positioning winform to the center screen does not work

I have an issue regarding the location of the window in my Winforms application.
I need to position the window in the center of the screen during start up. I tried the following but that didn't work. The form always opens at the top left corner.
I tried these in the load event:
this.CenterToScreen();
this.Location = new Point((Screen.PrimaryScreen.WorkingArea.Width - this.Width) / 2,
(Screen.PrimaryScreen.WorkingArea.Height - this.Height) / 2);
Update: i have given the form maximum and minimum size as 1090,726.
my designer file has this code:
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.BackColor = System.Drawing.SystemColors.GrayText;
this.ClientSize = new System.Drawing.Size(1074, 688);
this.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
this.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
this.MaximizeBox = false;
this.MaximumSize = new System.Drawing.Size(1090, 726);
this.MinimumSize = new System.Drawing.Size(1090, 726);
this.Name = "Mail_Remainder";
this.RightToLeftLayout = true;
this.SizeGripStyle = System.Windows.Forms.SizeGripStyle.Hide;
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "Remainder";
this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
this.Load += new System.EventHandler(this.Mail_Remainder_Load);
this.Resize += new System.EventHandler(this.Mail_Remainder_Resize);
this.ResumeLayout(false);
this.PerformLayout();
Any other way to do this?
Please help.

Give a look at the following:
Form1.StartPosition = FormStartPosition.CenterScreen;
Form1.Show();
Edit:
The line
this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
is the one causing the decentering.
If you comment it:
private void InitializeComponent()
{
this.SuspendLayout();
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.BackColor = System.Drawing.SystemColors.GrayText;
this.ClientSize = new System.Drawing.Size(1074, 688);
this.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
this.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
this.MaximizeBox = false;
this.MaximumSize = new System.Drawing.Size(1090, 726);
this.MinimumSize = new System.Drawing.Size(1090, 726);
this.Name = "Mail_Remainder";
this.RightToLeftLayout = true;
this.SizeGripStyle = System.Windows.Forms.SizeGripStyle.Hide;
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "Remainder";
// this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
this.Load += new System.EventHandler(this.Mail_Remainder_Load);
this.Resize += new System.EventHandler(this.Mail_Remainder_Resize);
this.ResumeLayout(false);
this.PerformLayout();
}
the window appears on the center of the screen.

Just set the StartPosition property of your form to be CenterScreen .....

I had a similar problem; after CenterToScreen () the form was off-center. Then I noticed I was doing this BEFORE InitializeComponent (). I moved it after InitializeComponent and it worked fine.