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How to add spacing dynamically on unity gameObject added to scrollView?

I was trying to add text elements on scrollview each having its own space.
For the code below after creating object added to the empty gameObject that is child of scrollview. Now if I add manually hight and width it works but if the string size grows it will become zagged again. So need to know what its previous elements height is or add space/padding to the top.
Heres the code from other question to create and adding those textObjects:
void CreateText(GameObject canvas, string text)
{
//Create Canvas Text and make it child of the Canvas
GameObject txtObj = new GameObject("myTextGO");
txtObj.transform.SetParent(canvas.transform, false);
//Attach Text,RectTransform, an put Font to it
Text txt = txtObj.AddComponent<Text>();
txt.text = text;
Font arialFont = Resources.GetBuiltinResource<Font>("Arial.ttf");
txt.font = arialFont;
txt.lineSpacing = 1;
txt.color = new Color(50 / 255, 50 / 255, 50 / 255, 255 / 255);
//requriing a solution like this only dynamically.
txt.GetComponent<RectTransform>().sizeDelta = new Vector2(100f, 200f);
}
How can I add spacing dynamically here for following loop? So that they are readable as different text objects.
for (i;i<10;i++)
//CreateText(canvas, UserText+" Hello there! "+i);
CreateText(canvas, "Hello there! "+i);
Require the text object to increase size automatically which is not achieved with content fitter attached to the empty gameObject. Default GridLayoutGroup cell and col size is 100x100, need to increase it dynamically.
Thanks.

How to create a smooth animated text marquee?

I know that there are lot of different threads about horizontal text animation/text scrolling, but unfortunately none of them give smooth scrolling with repeatable text. I have tried double/thickness animation using various WPF controls containing text. Also tried animating with visual brush which gives me by far the most elegant scrolling compared to other approaches (for e.g. playing with Canvas.Left property etc.) but that too goes blur the text, if the text length or the animation speed is too high.
I'm over to a pure DirectX C# implementation using SharpDX library. Should also mention that I'm a beginner with DirectX programming. Here is the code:
public void RunMethod()
{
// Make window active and hide mouse cursor.
window.PointerCursor = null;
window.Activate();
var str = "This is an example of a moving TextLayout object with no snapped pixel boundaries.";
// Infinite loop to prevent the application from exiting.
while (true)
{
// Dispatch all pending events in the queue.
window.Dispatcher.ProcessEvents(CoreProcessEventsOption.ProcessAllIfPresent);
// Quit if the users presses Escape key.
if (window.GetAsyncKeyState(VirtualKey.Escape) == CoreVirtualKeyStates.Down)
{
return;
}
// Set the Direct2D drawing target.
d2dContext.Target = d2dTarget;
// Clear the target.
d2dContext.BeginDraw();
d2dContext.Clear(Color.CornflowerBlue);
//float layoutXOffset = 0;
float layoutXOffset = layoutX;
// Create the DirectWrite factory objet.
SharpDX.DirectWrite.Factory fontFactory = new SharpDX.DirectWrite.Factory();
// Create a TextFormat object that will use the Segoe UI font with a size of 24 DIPs.
textFormat = new TextFormat(fontFactory, "Verdana", 100.0f);
textLayout2 = new TextLayout(fontFactory, str, textFormat, 2000.0f, 100.0f);
// Draw moving text without pixel snapping, thus giving a smoother movement.
// d2dContext.FillRectangle(new RectangleF(layoutXOffset, 1000, 1000, 100), backgroundBrush);
d2dContext.DrawTextLayout(new Vector2(layoutXOffset, 0), textLayout2, textBrush, DrawTextOptions.NoSnap);
d2dContext.EndDraw();
//var character = str.Substring(0, 1);
//str = str.Remove(0, 1);
//str += character;
layoutX -= 3.0f;
if (layoutX <= -1000)
{
layoutX = 0;
}
// Present the current buffer to the screen.
swapChain.Present(1, PresentFlags.None);
}
}
Basically it creates an endless loop and subtracts the horizontal offset. Here are the challenges: I need repeatable text similar to HTML marquee without any gaps, Would probably need to extend it to multiple monitors.
Please suggest.

I don't know neither how to use DirectX nor sharpdx, but if you want you can consider this solution
I had a similar problem a while ago, but with the text inside a combobox. After a bounty i got what i was looking for. I'm posting the relevant piece of code as an example, but you can check the complete answer here
Basically, whenever you have a textblock/textbox that contain a string that cannot be displayed completely, cause the length exceed the textblock/box lenght you can use this kind of approach. You can define a custom usercontrol derived from the base you need (e.g. SlidingComboBox : Combobox) and define an animation for you storyboard like the following
_animation = new DoubleAnimation()
{
From = 0,
RepeatBehavior = SlideForever ? RepeatBehavior.Forever : new RepeatBehavior(1), //repeat only if slide-forever is true
AutoReverse = SlideForever
};
In my example i wanted this behaviour to be active only when the mouse was on the combobox, so in my custom OnMouse enter i had this piece of code
if (_parent.ActualWidth < textBlock.ActualWidth)
{
_animation.Duration = TimeSpan.FromMilliseconds(((int)textBlock.Text?.Length * 100));
_animation.To = _parent.ActualWidth - textBlock.ActualWidth;
_storyBoard.Begin(textBlock);
}
Where _parent represent the container of the selected item. After a check on the text lenght vs combobox lenght i start the animation and end it at the end of the text to be displayed
Note that in the question i mentioned there are also other soltions. I'm posting the one that worked for me

Textblock margin causes out of bounds text

I'm currently trying to create a visual component to have scrolling text (left to right and right to left) - pretty much an html marquee.
I have a grid divided in several columns & rows, and I want to place my component inside one of the grid slots.
The grid (named UIGrid) is generated like this :
for (int i = 0; i < xDivisions; i++)
{
ColumnDefinition newColumn = new ColumnDefinition();
UIGrid.ColumnDefinitions.Add(newColumn);
}
for (int i = 0; i < yDivisions; i++)
{
RowDefinition newRow = new RowDefinition();
UIGrid.RowDefinitions.Add(newRow);
}
The component I'm adding is just a border with a textblock as a child. I place the border inside the Grid like this :
border = new Border();
Grid.SetColumn(border, xPosition);
Grid.SetRow(border, yPosition);
textBlock = new TextBlock();
border.Child = textBlock;
textBlock.Text = "Scrolling text from left to right";
UIGrid.Children.Add(border);
I'm using a timer to increment the textblock margin, here's the timer callback simplified body :
textBlock.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
double textWidth = textBlock.DesiredSize.Width;
double visibleWidth = componentBase.ActualWidth;
double targetMargin = textWidth < visibleWidth ? visibleWidth : textWidth;
if (margin.Left == targetMargin)
{
margin.Left = -textWidth;
} else
{
margin.Left++;
}
When the text slides from left to right, it behaves nicely :
https://s10.postimg.org/p0nt7vl09/text_good.png
Text "leaving" the grid slot is hidden.
However, when I set the textblock's margin as negative so it may come back inside the viewable area from the left, the text is visible even though it's outside its allocated slot :
https://s10.postimg.org/pownqtjq1/text_bad.png
I've tried using padding instead, but I can't set a negative padding. I've tried a few other things, but I feel like I've encountered a roadblock.
What could I do to get a nicely scrolling text ?

If you want nicely scrolling text ListView might be a better option. It is dynamic and you can bind it to your object. It would take a lot of this guess work out.

Ed Plunkett led me in the right direction with the Clip property. The idea is to do this :
border.Clip = new RectangleGeometry
{
Rect = new Rect(0, 0, border.ActualWidth, border.ActualHeight)
};
Of course, that doesn't work if the border hasn't been rendered yet (and of course it isn't when my code is running). You can force the measurement to take place using 'Measure' as I did to measure the text length in pixels, but it behaved strangely on my border. I wouldn't get the correct size at all.
In the end, I simply subscribed to the border's SizeChanged event :
border.SizeChanged += OnSizeComputed;
When that event is fired, I create the RectangleGeometry using ActualWidth & ActualHeight.

Create Objects in panel and arrange objects the new in first not in end

I want create manually PictureBox and Label on horizontal Panel, The count of PictureBox and Label on panel Unknown maybe 200 or more or less, I use the below code to do that but i face two troubles first one:
I want add the new object created in the first not in the end for example if i created items "A B C D E" want it add on Panel "E D C B A" want always the new come to first.
Note: Panel width "230" Height "710"
Second trouble:
Currently when i use Panel scroll bar to go down than add new objects find happen big free space between the last object created and the new and if i used scroll again to go down and created new object on panel happen more big free space.
int Right = 50, Top = 0;
// Create Image + Text
PictureBox pbox = new PictureBox();
pbox.Size = new Size(140, 80);
pbox.Location = new Point(Right, Top);
pbox.Image = Image.FromFile("");
Panel1.Controls.Add(pbox);
// Create label
Label lblPlateNOBAR = new System.Windows.Forms.Label();
lblPlateNOBAR.Text = lblPlateNO.Text;
lblPlateNOBAR.Location = new Point(Right + 20, Top + 80);
Panel1.Controls.Add(lblPlateNOBAR);
Top = Top + 150;

In order to make the objects insert into the panel, you'd need to move the controls which already exist in the panel:
int right = 50;
// Create Image + Text
PictureBox pbox = new PictureBox();
pbox.Size = new Size(140, 80);
pbox.Location = new Point(right, 0);
pbox.Image = Image.FromFile("");
// Create label
Label lblPlateNOBAR = new System.Windows.Forms.Label();
lblPlateNOBAR.Text = lblPlateNO.Text;
lblPlateNOBAR.Location = new Point(right + 20, 80);
foreach(var control in Panel1.Controls)
{
control.Top = control.Top + 150;
}
Panel1.Controls.Add(pbox);
Panel1.Controls.Add(lblPlateNOBAR);

I know it might seem that I'm not answering your question, but you can take little time to know my suggestion too. I don't know what you wanna achieve, but when you want to make such a sophisticated program, it's a better practice that you do all the work needed yourself, not relying on Windows Forms Controls. Trying to add, remove, change location of lots of controls will reduce the application performance very much. I suggest that you draw, for example your pictures, yourself, using Graphics and Image objects and Paint event. Also handle things like clicking and selecting pictures by MouseEvents. It might seem a little hard at first, but after you've done this you have far better performance and flexibility. This becomes more important considering you mentioned you wanna place 200 pictures in the panel. This also prevents trouble of flickering that appears when you change position of many controls. It's good to mention that to do scrolling in this case, you can place a Panel inside of a Parent Panel and use AutoScroll feature only for the parent panel to handle scrolling. This way you don't have to care about the scrolling anymore.

Label with an Image on the left - preventing the text to come over the picture?

I want to report status of an operation in a WinForm application written in C#.
To make it more user-friendly, I want to show an icon on the left depending on the status.
Animated GIF during the process
Ok or Error icon depending on the result.
I wanted to use the native WinForms Label control which works well with animated GIFs and looks as standard as it can get.
My problem however is that text comes is written over the picture.
There does not seem to be any property to set a margin for the text.
I tried the most obvious thing, which is to prefix it with spaces, which works, except when the text wraps to the next line, as shown below.
I would prefer not spend too much time writing/testing/debugging derived control for this if possible...
I could put a quick and dirty user-control, with a picturebox on the left of a label, but it doesn't feel very clean.
Is there any trick to get around this quickly and elegantly, or can someone point me to a Label derived class supporting this that is relatively lightweight? (I had a look at CodeProject but couldn't find much).
Thank you.

A simple alternative is to use a Button instead of a Label, as shown below:
By using the following properties, you can style the Button to look just like a Label, whilst also having the option to keep the image and text aligned next to eachother:
FlatAppearance ↴
BorderSize = 0
MouseDownBackColor = Control
MouseOverBackColor = Control
FlatStyle = Flat
Image = [Your image]
ImageAlign = MiddleLeft
Text = [Your text]
TextAlign = MiddleLeft
TextImageRelation = ImageBeforeText
A simple way to achieve the desired effect; no user controls!

The quick-and-dirty usercontrol with an image and a separate label is your best option. Just add a public string property to set the label's text and you're pretty much done.

Here's a different solution that I find less hacky than the "styled button" approach. It also allows you to set the distance (spacing) between the image and the text.
class ImageLabel : Label
{
public ImageLabel()
{
ImageAlign = ContentAlignment.MiddleLeft;
}
private Image _image;
public new Image Image
{
get { return _image; }
set
{
const int spacing = 4;
if (_image != null)
Padding = new Padding(Padding.Left - spacing - _image.Width, Padding.Top, Padding.Right, Padding.Bottom);
if (value != null)
Padding = new Padding(Padding.Left + spacing + value.Width, Padding.Top, Padding.Right, Padding.Bottom);
_image = value;
}
}
protected override void OnPaint(PaintEventArgs e)
{
if (Image != null)
{
Rectangle r = CalcImageRenderBounds(Image, ClientRectangle, ImageAlign);
e.Graphics.DrawImage(Image, r);
}
base.OnPaint(e); // Paint text
}
}

One alternative to a UserControl would be to use a TableLayoutPanel with two columns and one row, placing the image control in one cell and the text control in the other.

Its an old question, but maybe someone will look here just like I got here...
You can use the Align on the Image and on the text:
label.TextAlign = ContentAlignment.MiddleRight;
label.ImageAlign = ContentAlignment.MiddleLeft;

nameoftextlabel.hidden=1
That should work.