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How to have a fixed line spacing in a textbox?

I am creating a software for note-taking. I created an image of a notebook with the lines, and etc. Now, I want to create a textbox (or rich text box, or whatever element that works) that will add the text exactly on top of each line.
However, as the user types more than a few lines, the texts gets shifted a little bit on each line, ending up very weird.
I looked through many forums and questions in trying to have this fixed. Nothing helped. I'm developing it in Visual Studio, WPF project, C#. I want to add this control to the C# code, no XAML.

Try Setting the LineStackingStrategy property.
p.LineStackingStrategy = LineStackingStrategy.BlockLineHeight;
If you need some spacing before the line also, like on starting of a paragraph then you can try setting the property as:
p.LineStackingStrategy = LineStackingStrategy.MaxHeight;
Check this Post: WPF- "LineSpacing" in a TextBlock

The following should work for line height or paragraph margins:
RichTextBox rtb = new RichTextBox();
Paragraph p = rtb.Document.Blocks.FirstBlock as Paragraph;
p.LineHeight = /* Your height here */;
p.Margin = new Thickness(/* Your height here */);

Stacking different elements in a Windows.Forms.Button

I am developing a windows forms application in c#. I am creating a large amount of buttons in loops, and I wish for both an image (icon), and text to be displayed on a button. I have experimented with alignment, but I require the image to be on the very top of the Button, and the text to be below the image. My current code is:
button1.Image = im;
button1.ImageAlign = ContentAlignment.TopCenter;
button1.Text = "CS: GO";
button1.TextAlign = ContentAlignment.MiddleCenter;
This produces this image, which is clearly not what I want:
I cannot resize the Button, as the text is user defined, and subject to change in length.

Try the following:
button1.TextAlign = ContentAlignment.BottomCenter;
if this doesn't fit your needs there's another Property:
button1.TextImageRelation = TextImageRelation.ImageAboveText;
if I am right this will override some of your alignments.

Change Label Font Size Dynamically Not Updating On Screen

Am trying to change a label font size depending on screen resolution. Have tried when the form is loading, shown and also in the form constructor, but on screen the font size is the same as design time.
Rectangle resolution = Screen.PrimaryScreen.Bounds;
if (resolution.Width == 1024 && resolution.Height == 768)
{
this.labelEnterRegistration.Font = new Font(this.labelEnterRegistration.Font.FontFamily, 40f);
}
I've added a double click event to the label to check the font size, and it says it's 40 in a message box (MessageBox.Show(this.labelEnterRegistration.Font.ToString());), so why doesn't the form display reflect this?
I have tried the label Invalidate()but that didn't work either.

Have fixed it. As it was done before it was setting the fonts emSize, I did the following so it changes the pixel size:
FontStyle style = this.labelEnterRegistration.Font.Style;
this.labelEnterRegistration.Font = new Font(this.labelEnterRegistration.Font.FontFamily, 40f, style, GraphicsUnit.Pixe
And now keeps the same font style as well!!
Thanks for the comments #HEPİMİZYARBAYMEHMETALKANIZ, made me think about it some more.

Prevent combobox from resizing on font change

I have a combo box that has a list of font families in it. As you can guess I'm making a toolstrip for editing fonts in a rich text box control. The problem is when I change fonts it's resizing my combobox.
scrolling through different fonts causes the combo box to become "jumpy" and some fonts have a huge height which is causing for some hilarious problems.
Exhibit A:
Exhibit B:
Yeh... I'll show the code that I have so far... by the way the combobox is just bound to the font families collection.
void box_SelectedIndexChanged(object sender, EventArgs e)
{
String text = ((Font)box.SelectedItem).Name;
Font font = (Font)box.SelectedItem;
BeginInvoke(new Action(() => box.Text = text));
BeginInvoke(new Action(() => box.Font = font));
}
Anyone have any ideas, if I can't find a solution I can just stop the font from changing and just display the name in the default font.

Using a ToolStripComboBox is the problem here I think. The .NET 2.0 ToolItem classes have a lot of residual, erm, features that never got addressed. WPF sucked the resources away. The tool strip is obviously not handling the resize very well. Nor does it make the rest of the form move down when it gets bigger which is by design.
The canonical font combobox uses owner draw to display the fonts in the dropdown list in their regular style. Without changing the font of the box itself. You really don't want the toolstrip to resize, that's just not a great UI.

The only way I can think of doing it is by creating a custom combobox control and deriving from said control. This will give you access to the variable ownerdraw which gives us a little more flexibility without having to mess around with the ItemHeight property. Hooking into one of the events, which dictate that the value of the control has changed.
You could then have a function like the following to calculate the new layout size:
using (Font font = new Font(this.Font.FontFamily, (float)this.PreviewFontSize))
{
Size textSize;
textSize = TextRenderer.MeasureText("yY", font);
_itemHeight = textSize.Height + 2;
}

I tried all these approaches with little success sadly. However I didn't realize it until today when I looked at how microsoft office implements it. They actually use the same font in the combo box for the selected item no matter what font is selected. So as much as I want to make it more custom I'm just going to use a uniform font for whatever font is shown in the selected index.

C# Printing Inconsistent

I have a form on which I have a number of textboxes. I wish to print the text from these textboxes in the locations they are on the form. It is printing at the moment using the code below. However, the text prints differently on different printers (on some it prints just right, on some too high, etc). It is being printed on a pre-printed form with spaces for the text so it needs to be fairly exact. What am I missing to make it print the same on every printer?
public void printDocument_PrintPage(object sender, PrintPageEventArgs e)
{
Panel curPanel = this.FormPanel;
Graphics g = (Graphics)e.Graphics;
Pen aPen = new Pen(Brushes.Black, 1);
// Cycle through each control. Determine if it's a checkbox or a textbox and draw the information inside
// in the correct position on the form
int xLocation, yLocation;
for (int j = 0; j < curPanel.Controls.Count; j++)
{
// Check if its a TextBox type by comparing to the type of one of the textboxes
if (curPanel.Controls[j] is TextBox)
{
// Unbox the Textbox
TextBox theText = (TextBox)curPanel.Controls[j];
// Draw the textbox string at the position of the textbox on the form, scaled to the print page
xLocation = theText.Bounds.Left;
yLocation = theText.Bounds.Top;
g.DrawString(theText.Text, theText.Font, Brushes.Black, xLocation, yLocation);
}
}
}

The problem is that you ignoring how the text is aligned inside the control. Default alignment is roughly equal to StringFormat.Alignment = StringAlignment.Center, it can be changed for buttons and check boxes with their TextAlign property. You'll need to use the DrawString() overload that takes a Rectangle and a StringFormat. Note that TextBox is tricky, you might still be off by a few pixels.
Take a look at Control.DrawToBitmap() for a completely different approach.

I'm wondering if maybe the problem is discrepencies in how different printers pull in the paper. The text is off by a maximum of half an inch between printers. I was hoping this wasn't the case because if so I will just have to tailor my application to the client's particular printer (not ideal). Has anyone else run into this situation?

This is most likely a combination of two things:
You need to explicitly set up the page margins/boundaries. Various printers will have default margin and page size settings. Use a PageSetupDialog to help you out. If you want consistent printing, you can make the margins constant, but page size should be the responsibility of the user (and then check to make sure your margins actually fit on the page!).
The text needs to be placed on the page in relation to the page boundaries. I know your comment says that it will be, but it doesn't look like that it is actually implemented in your code. Setting the OriginAtMargins (on your PrintDocument control) to true helps immensely with this.