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Repositioning element on the form

I'm building that To-Do list app and I'm trying to create a "Add New task" button.
I wanted to create a new Task (TextBox) on the button click and also move the button bellow the TextBox added. So, I tried to create multiple panels and when the button was clicked, move the "New Task" button to the second panel and add the new textbox created to the first panel. And after that if the user wanted to remove that Task (TextBox), to repositionate the button and Tasks according to that.
Can someone please help me with that??
`
private void btnNewTask_Click(object sender, EventArgs e)
{
// Creating new Textbox
TextBox txtTask = new TextBox();
btnNewTask.Location = new Point(panel2);
// txtTask parameter
txtTask.BorderStyle = BorderStyle.None;
txtTask.ReadOnly = false;
txtTask.PlaceholderText = "Input a new Task.";
txtTask.Location = new Point(panel1);
//Adding txtTask.
this.Controls.Add(txtTask);
}
`

I founded The Solution. I deleted the panels and leaved the btnNewTask on the form.
On button click I needed to create and set the txtTask location as the btnNewTask location and change the Y location of btnNewTask to move it bellow. After that check if there was any other control that had the same or less Y location than txtTask, and if there was any, add 35 to his Y location too.
There is my new Code:
int c = 0;
private void btnNewTask_Click(object sender, EventArgs e)
{
// Creating new Textbox
TextBox txtTask = new TextBox();
// txtTask parameter
Font font = new Font("Segoe UI", 10.0f);
txtTask.Name = "txtTask" + ++c;
txtTask.BorderStyle = BorderStyle.None;
txtTask.ReadOnly = false;
txtTask.PlaceholderText = "Input a new Task.";
txtTask.Size = new Size(817, 31);
txtTask.Font = font;
txtTask.Location = new Point(btnNewTask.Location.X , btnNewTask.Location.Y); // txtTask will get the "btnNewTask" Location
btnNewTask.Location = new Point(txtTask.Location.X , btnNewTask.Location.Y + 35); // That should add 35 to the Y location
foreach (Control item in this.Controls)
{
if (item.Location.Y >= txtTask.Location.Y)
{ // if there is an item that has greater Y location
item.Location = new Point(item.Location.X, txtTask.Location.Y + 35); // It should increase its value as 35 too.
}
this.Controls.Add(txtTask);
}
There's an example:
Thank for the help and ideas!

How to save state of Windows Form Application (or save data in text boxes with arrays)

I have been working a program that is used as a guide/way to memorize items when studying terms for whatever (test, exam, etc.). It generates a set amount of textboxes inside of a group box (which has the subject name set as its text property) in which you can write the term name and definition. I was wondering how I would save what was written in the text boxes after being generated. Perhaps being able to save the state of the application after pressing save and being able to set the application to its previous state when wanted (Kind of like snapshots that you use in virtual machines). Another way I thought of is to perhaps make a group of each subject somehow and within that store an array of text in each term name box and the associated term definition. Here is the code inside of the button I press to generate the text boxes. There is also a photo of the form: Photo of form Here is one of the program running: Image of Program running Edit: I am not asking for the straight up entire code. I would like just a guideline/idea of how I would go about doing this.
GroupBox groupBox1 = new GroupBox();
TextBox textTest = new TextBox();
textTest.Location = new Point(15, 40);
groupBox1.Controls.Add(textTest);
Button buttonForBoxes = new Button();
NumericUpDown numberUpDown1 = new NumericUpDown();
groupBox1.Controls.Add(buttonForBoxes);
buttonForBoxes.Location = new Point(140, 40);
buttonForBoxes.Text = "moretext";
numberUpDown1.Location = new Point(15, 15);
groupBox1.Controls.Add(numberUpDown1);
groupBox1.AutoSize = true;
var numVal = numericUpDown1.Value;
var numDo2 = 40;
var numDo1 = 120;
var inSubjectBox = subjectBox.Text;
//Makes boxes however many times you specify
for (int i = 0; i < numVal; i++)
{
numDo2 += 110;
TextBox text1 = new TextBox();
text1.Location = new Point(15, numDo1);
groupBox1.Controls.Add(text1);
numDo1 += 110;
TextBox textThing = new TextBox();
textThing.Location = new Point(15, numDo2);
textThing.Multiline = true;
textThing.Size = new System.Drawing.Size(600, 60);
groupBox1.Controls.Add(textThing);
}
// Set the Text and Dock properties of the GroupBox.
groupBox1.Text = inSubjectBox;
groupBox1.Dock = DockStyle.Top;
// Enable the GroupBox (which disables all its child controls)
groupBox1.Enabled = true;
// Add the Groupbox to the form.
this.Controls.Add(groupBox1);

Maybe you can try to save the textbox info into Settings.
First, go to Project -> Properties -> Settings and add new items(type of StringCollection) in Settings.
Then, modify the code like this(save the location of the TextBox in the format of "x;y"):
private void Addtextbox_Click(object sender, EventArgs e)
{
Properties.Settings.Default.text1Collection.Clear();
Properties.Settings.Default.textThingCollection.Clear();
var numVal = 2;
// code omitted
// ...
for (int i = 0; i < numVal; i++)
{
numDo2 += 110;
TextBox text1 = new TextBox();
text1.Location = new Point(15, numDo1);
groupBox1.Controls.Add(text1);
// save info to Settings
Properties.Settings.Default.text1Collection.Add(String.Format("{0};{1}", text1.Location.X, text1.Location.Y));
numDo1 += 110;
TextBox textThing = new TextBox();
textThing.Location = new Point(15, numDo2);
textThing.Multiline = true;
textThing.Size = new System.Drawing.Size(600, 60);
groupBox1.Controls.Add(textThing);
// save info to Settings
Properties.Settings.Default.textThingCollection.Add(String.Format("{0};{1}", textThing.Location.X, textThing.Location.Y));
// call Save()
Properties.Settings.Default.Save();
}
// code omitted
// ...
}
private void LoadtextboxFromSettings_Click(object sender, EventArgs e)
{
foreach (string text1str in Properties.Settings.Default.text1Collection)
{
TextBox text1 = new TextBox
{
Location = new Point(Convert.ToInt32(text1str.Split(';')[0]), Convert.ToInt32(text1str.Split(';')[1]))
};
groupBox1.Controls.Add(text1);
}
foreach (string textThingstr in Properties.Settings.Default.textThingCollection)
{
TextBox textThing = new TextBox
{
Multiline = true,
Location = new Point(Convert.ToInt32(textThingstr.Split(';')[0]), Convert.ToInt32(textThingstr.Split(';')[1])),
Size = new Size(600, 60)
};
groupBox1.Controls.Add(textThing);
}
}
Besides, if you get the exception System.NullReferenceException: 'Object reference not set to an instance of an object.', try to add a default value for each "setting".
Update:
The way to set Settings default value.

I used to do something similar when storing the positions of forms and the size of some controls on them. Then it was necessary for the application to open on restart in the same form as it was last used.
All forms and controls data I saved to XML file, when closing application. When then application has been started I read this XML file and set positions of forms and controls.

Reset focus to default after Popup LostFocus

I'm observing that when the Popup control loses focus it returns focus back to the object that initiated the Popup. So basically this sequence of events.
Textbox GotFocus fires and I open the popup
When finished with the Popup user clicks anywhere outside Popup to activate LostFocus
LostFocus activates, but immediately after GotFocus for the object in step 1 (Textbox) executes - relaunching the popup.
My question, is there a way to reset focus to whatever the default is when you first start an app? I want to prevent it from returning focus back to the control that launched the popup.
EDIT: I removed LostFocus event because I found it wasn't necessary in order to remove the popup from view when user taps away.
Popup p;
public MainPage()
{
this.InitializeComponent();
this.NavigationCacheMode = NavigationCacheMode.Required;
p = new Popup();
p.IsLightDismissEnabled = true;
//p.LostFocus += p_LostFocus;
}
private void m_GotFocus(object sender, RoutedEventArgs e)
{
if (p.IsOpen != true)
{
// Create some content to show in the popup. Typically you would
// create a user control.
Border border = new Border();
border.BorderBrush = new SolidColorBrush(Colors.Black);
border.BorderThickness = new Thickness(0);
StackPanel panel1 = new StackPanel();
panel1.FlowDirection = Windows.UI.Xaml.FlowDirection.LeftToRight;
panel1.Background = new SolidColorBrush(Color.FromArgb(255, 30, 30, 30));
Button button1 = new Button();
button1.Content = ".";
button1.Margin = new Thickness(5.0);
button1.BorderThickness = new Thickness(0);
button1.Background = new SolidColorBrush(Color.FromArgb(255, 90, 90, 90));
button1.Click += new RoutedEventHandler(Feedback_Click);
TextBlock textblock1 = new TextBlock();
textblock1.Text = "";
textblock1.TextWrapping = TextWrapping.WrapWholeWords;
textblock1.Margin = new Thickness(5.0);
panel1.Children.Add(textblock1);
panel1.Children.Add(button1);
border.Child = panel1;
// Set the Child property of Popup to the border
// which contains a stackpanel, textblock and button.
p.Child = border;
// Set where the popup will show up on the screen.
p.VerticalOffset = 400;
p.HorizontalOffset = 100;
// Open the popup.
p.IsOpen = true;
}
}

Windows Forms Textbox Enter key

I have a TextBox, but I can't find any source explaining how to call a function when a button is pressed down.
public Simple()
{
Text = "Server Command Line";
Size = new Size(800, 400);
CenterToScreen();
Button button = new Button();
TextBox txt = new TextBox ();
txt.Location = new Point (20, Size.Height - 70);
txt.Size = new Size (600, 30);
txt.Parent = this;
button.Text = "SEND";
button.Size = new Size (50, 20);
button.Location = new Point(620, Size.Height-70);
button.Parent = this;
button.Click += new EventHandler(Submit);
}
Some sources tell me to use a function, but I don't understand how it is going to get called.

If I understood correctly you want to call a method when users press Enter while typing anything in textbox? If so, you have to use the KeyUp event of TextBox like this:
public Simple()
{
Text = "Server Command Line";
...
TextBox txt = new TextBox ();
txt.Location = new Point (20, Size.Height - 70);
txt.Size = new Size (600, 30);
txt.KeyUp += TextBoxKeyUp; //here we attach the event
txt.Parent = this;
Button button = new Button();
...
}
private void TextBoxKeyUp(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
//Do something
e.Handled = true;
}
}

you already have a button as well like this
button.Click += new EventHandler(Submit);
if you want to call this function you can do this
button.PerformClick(); //this will call Submit you specified in the above statement

How to create windows forms dialog with dynamic number of buttons?

I need to create a sort of a dialog box or something like a popup screen. I have this array of items and then I need to create a buttons for each of them on the dialogbox so that i could navigate with a button click.
Whats the best way to do it in C#? can someone guide me on this please

If you are using winforms, then place FlowLayoutPanel on your form. Then add all controls to it at runtime.
foreach(var item in items)
{
Button button = new Button();
// setup button properties
// subscribe to events
flowLayoutPanel.Controls.Add(button);
}
FlowLayoutPanel will arrange your controls automatically.

Consider that you Dialog or similar parent element is called sp and ar is the array of elements that you want to use to create the buttons:
for(YourObject obj : ar)
{
System.Windows.Controls.Button newBtn = new Button();
newBtn.Content = obj.YourProperty;
newBtn.Name = "Button" + obj.YourProperty;
sp.Children.Add(newBtn);
}

I was playing with some concepts and one part of it seem to be exactly example of creating dynamic dialog. You can add dynamic button creation to it, combine it and properly format it using table or flow layout panel
DialogResult result;
using (var popup = new Form())
{
popup.Size = new Size(1000, 500);
popup.Location = new Point(Convert.ToInt32(this.Parent.Width / 2) - 500, Convert.ToInt32(this.Parent.Height / 2) - 250);
popup.FormBorderStyle = FormBorderStyle.FixedDialog;
popup.MinimizeBox = false;
popup.MaximizeBox = false;
popup.Text = "My title";
var lbl = new Label() { Dock = DockStyle.Top, Padding = new Padding(3), Height = 30 };
lbl.Font = new Font("Microsoft Sans Serif", 11f);
lbl.Text = "Do you want to Continue?";
// HERE you will add your dynamic button creation instead of my hardcoded
var btnYes = new Button { Text = "Yes", Location = new Point(700, 400) };
btnYes.Click += (s, ea) => { ((Form)((Control)s).Parent).DialogResult = DialogResult.Yes; ((Form)((Control)s).Parent).Close(); };
var btnNo = new Button { Text = "No", Location = new Point(900, 400) };
btnNo.Click += (s, ea) => { ((Form)((Control)s).Parent).DialogResult = DialogResult.No; ((Form)((Control)s).Parent).Close(); };
popup.Controls.AddRange(new Control[] { lbl, btnYes, btnNo });
result = popup.ShowDialog(this);
}
if (result == DialogResult.Yes)
{
// do this
}
else
{
// do that
}
This was example of how to create dynamic dialog with dialog result output.