Develop Reference

How to hide all items in a private void method you've created?

so I created my own private void that can create buttons
private void addButtonsToForm()
{
for (int i = 0; i < 26; i++)
{
Button currentNewButton = new Button();
currentNewButton.Size = new Size(20, 30);
currentNewButton.Location = new Point(20 + 25 * i, 420);
currentNewButton.Text = ((char)(65 + i)).ToString();
currentNewButton.Click += LetterClicked;
letters[i] = currentNewButton;
this.Controls.Add(letters[i]);
}
}
The buttons are alphabets and will be accessed when the user wants to choose a letter ... but the problem is I'm trying to figure out how to go back when the user clicked or selected a button..
Originally I wanted to do was i could just hide all the buttons created and just make the previous button visible but for some reason it only hides the only button that is clicked
//this is under private void LetterClicked(object sender, EventArgs e)
Button selectedLetter = (Button)sender;
selectedLetter.Enabled = false;
i thought of stupid codes like
addbuttonstoform().visible = false; but of course that won't work.. but you might get an idea to where i want to go.... it's a bit confusing to explain... I'm new in c# and i'm creating a guess the word game so help could be great..

Here is a working solution for your problem. See below:
using System;
using System.Drawing;
using System.Windows.Forms;
namespace Alphabets
{
public partial class Form1 : Form
{
private Button[] _letters;
public Form1()
{
InitializeComponent();
AddButtonsToForm();
}
private void AddButtonsToForm()
{
_letters = new Button[26];
for (int i = 0; i < 26; i++)
{
Button currentNewButton = new Button
{
Name = "BtnLetter"+ ((char)(65 + i)),
Size = new Size(20, 30),
Location = new Point(20 + 25 * i, 420),
Text = ((char) (65 + i)).ToString()
};
currentNewButton.Click += LetterClicked;
_letters[i] = currentNewButton;
this.Controls.Add(_letters[i]);
}
}
private void LetterClicked(object sender, EventArgs e)
{
var selectedLetter = (Button) sender;
//hide all other buttons
foreach (var letter in _letters)
{
if (letter.Text != selectedLetter.Text)
{
var buttons = this.Controls.Find("BtnLetter" + letter.Text, true);
buttons[0].Enabled = false;
}
}
}
}
}

Adding Custom Controls to a panel programatically with margin

Hello I made a custom text box with an associated label.
and I have a custom Form.
when on a form if I drag drop my custom textbox from the toolbox and set it's properties I can see that it works. However what I would like to do is when I'm on my custom control where I have a TableLayoutPanel (with 3 rows)
on row index 1(mid row) I would like to add my custom controls programatically.
when I do this the text label is somewhere else then the textbox.
My Code and the Image to my problem is below:
MyCustomTextBox:
public class MyLbTextBox : TextBox
{
#region CustomProperties
private Label AssociatedLabel = new Label();
private string _myLbText;
public string MyTextLabel
{
get => _myLbText;
set
{
_myLbText = value;
AssociatedLabel.Text = _myLbText ?? _myBindingField;
Size s = TextRenderer.MeasureText(AssociatedLabel.Text, AssociatedLabel.Font);
AssociatedLabel.Location =
new Point(Location.X - s.Width - AssociatedLabel.Padding.Right, Location.Y);
var MyMargin = this.Margin;
MyMargin.Left = 100;
this.Margin = MyMargin;
}
}
#endregion
private string _myBindingField;
public string MyBindingField
{
get { return _myBindingField; }
set
{
_myBindingField = value;
}
}
private MyJoins.MyExpressions _myExpression;
public MyJoins.MyExpressions MyExpression
{
get => _myExpression;
set => _myExpression = value;
}
public MyLbTextBox()
{
_myExpression = MyJoins.MyExpressions.Equals;
ParentChanged += MyLbTextBox_ParentChanged;
LocationChanged += MyLbTextBox_LocationChanged;
Disposed += MyLbTextBox_Disposed;
}
private void MyLbTextBox_Disposed(object sender, EventArgs e)
{
AssociatedLabel.Dispose();
}
private void MyLbTextBox_LocationChanged(object sender, EventArgs e)
{
Size s = TextRenderer.MeasureText(AssociatedLabel.Text, AssociatedLabel.Font);
AssociatedLabel.Location =
new Point(Location.X - s.Width - AssociatedLabel.Padding.Right, Location.Y);
}
private void MyLbTextBox_ParentChanged(object sender, EventArgs e)
{
AutoAddAssociatedLabel();
}
private void AutoAddAssociatedLabel()
{
if (Parent == null) return;
AssociatedLabel.Padding = new Padding(3);
Size s = TextRenderer.MeasureText(AssociatedLabel.Text, AssociatedLabel.Font);
AssociatedLabel.Location =
new Point(Location.X - s.Width - AssociatedLabel.Padding.Right, Location.Y);
Parent.Controls.Add(AssociatedLabel);
}
}
By the way, this is how I add my controls:
after adding my controls through the property grid
this is how I set them on the screen
private void _mySearchFields_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (_mySearchFields == null) return;
foreach (var searchField in _mySearchFields)
{
if (MySearchFieldsPanel.Contains(searchField.MyControl)) continue;
MySearchFieldsPanel.Controls.Add(searchField.MyControl, 1, 0);
}
var myHeight = MySearchFieldsPanel.Controls.Cast<Control>().Sum(variable => variable.Height);
MyBdPanel.RowStyles[1].Height = myHeight + 40;
}
I appreciate any help

This line is a reason of all problems:
Parent.Controls.Add(AssociatedLabel);
This is bad idea if you are creating composite controls (composite = consisting from several real controls). That will cause layout problems you have experienced and more.
Instead consider either:
Utilize UserControl to create composition.
Create custom control (like you do) but without more controls. If you need label - draw it as text in OnPaint while allocating some space: fixed with margin, adjustable with some property or dynamic with measuring text.

Grouping different things together so that they will all be activated/deactivated all at once with minimum code

I don't know much about C# so I apologize in advance if my question has been answered elsewhere. I don't know what to search for.
I'm making a tic tac toe game in windows forms. I've set it up like this: each cell has 2 buttons(x and o) and two labels (X and O). Clicking one of the buttons will change the corresponding label's visible property to true while at the same time disabling (enable=false) the opposite button from being selected. There are 9 cells total. I also have a menu button (reset) that when clicked will enable all buttons and hide all labels so that the game may be re-played.
I'm looking for a way to reset all the items I want without having to individually type code for each item. Is there a way to group the items together so that they can all be fired at once with a minimum of code?
Source code is incomplete as I am still writing the program. I've posted the code for three cells.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Tick_Tack_Toe
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void xButton1_Click(object sender, EventArgs e)
{
xLabel1.Visible = true;
oButton1.Enabled = false;
}
private void oButton1_Click(object sender, EventArgs e)
{
oLabel1.Visible = true;
xButton1.Enabled = false;
}
private void xButton2_Click(object sender, EventArgs e)
{
xLabel2.Visible = true;
oButton2.Enabled = false;
}
private void oButton2_Click(object sender, EventArgs e)
{
oLabel2.Visible = true;
xButton2.Enabled = false;
}
private void resetToolStripMenuItem_Click(object sender,
EventArgs e)
{
xButton1.Enabled = true;
oButton1.Enabled = true;
xButton2.Enabled = true;
oButton2.Enabled = true;
xButton3.Enabled = true;
oButton3.Enabled = true;
xLabel1.Visible = false;
oLabel1.Visible = false;
xLabel2.Visible = false;
oLabel2.Visible = false;
xLabel3.Visible = false;
oLabel3.Visible = false;
}
}
}

One way you can do this is to loop through the controls collection. Since you seem to have a standard on the naming of the controls, you can first narrow the collection down to only those whose name begins with 'o' or 'x'. Then, you can look at the type of control, and if it's a label you can hide it, and if it's a button you can enable it:
private void ResetControls()
{
foreach (Control control in this.Controls)
{
// Only look at controls whose names begin with 'o' or 'x'
if (control.Name.StartsWith("o") ||control.Name.StartsWith("x"))
{
// Hide it if it's a label
if(control.GetType() == typeof(Label))
{
control.Visible = false;
}
// Enable it if it's a button
else if (control.GetType() == typeof(Button))
{
control.Enabled = true;
}
}
}
}
You mentioned that all your button and labels are inside their own panel control, which has it's own control collection. So you can modify the code above to first search for panel controls, then search the panel control's control collection for buttons and labels:
private void ResetControls()
{
foreach (Control control in this.Controls)
{
if (control is Panel)
{
var panel = control as Panel;
foreach (Control panelControl in panel.Controls)
{
// Only look at controls whose names begin with 'o' or 'x'
if (panelControl.Name.StartsWith("o") || panelControl.Name.StartsWith("x"))
{
// Hide it if it's a label
if (panelControl is Label)
{
panelControl.Visible = false;
}
// Enable it if it's a button
else if (panelControl is Button)
{
panelControl.Enabled = true;
}
}
}
}
}
}
Note that this is just one possible solution to get you going, but certainly not the best. Normally the controls would be created at runtime, added to a collection of some sort (usually an array called GameBoard or something like that), and placed on the form all by code. Their click events would all be hooked up to the same method, which would do the right thing based on either control name or some data in the Tag field.

They are grouped together in the Controls array of the form. Here is a simple example of how you can cycle through them:
private void doReset()
{
foreach (Control c in this.Controls)
{
if (c.GetType() == typeof(Button))
{
c.Enabled = true;
}
else if (c.GetType() == typeof(Label))
{
c.Visible = false;
}
}
}
You can do some more intelligent logic in there for the specific controls if you like. Something like adding a tag to each button if it gets picked up by the method or, naming each button in a certain way if it is to get picked up by the method.

Let's try following idea:
List<Button> buttons = new List<Button>();
List<Label> labels = new List<Label>();
buttons.Add(xButton1)
buttons.Add(oButton1)
buttons.Add(xButton2)
buttons.Add(oButton2)
...
labels.Add(xLabel1)
labels.Add(oLabel1)
labels.Add(xLabel2)
labels.Add(oLabel2)
...
foreach(var ctr in buttons)
{
ctr.Enabled = true;
}
foreach(var ctr in labels)
{
ctr.Enabled = true;
}

This is how I always do it. If you give each button a different text value inside the click event you can do different things depending on the text value.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Tick_Tack_Toe
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
MyButton.buttons = new List<MyButton>() {
new MyButton() { button = xButton1, label = xLabel1},
new MyButton() { button = xButton2, label = xLabel2},
new MyButton() { button = xButton3, label = xLabel3},
new MyButton() { button = oButton1, label = oLabel1},
new MyButton() { button = oButton2, label = oLabel2},
new MyButton() { button = oButton3, label = oLabel3}
};
foreach (MyButton button in MyButton.buttons)
{
button.button.Click += new EventHandler(Button_Click);
}
}
private void Button_Click(object sender, EventArgs e)
{
MyButton button = sender as MyButton;
button.label.Visible = true;
button.button.Enabled = false;
switch (button.button.Text)
{
case "X":
//enter your code here
break;
case "Y":
//enter your code here
break;
}
}
private void resetToolStripMenuItem_Click(object sender,
EventArgs e)
{
foreach (MyButton button in MyButton.buttons)
{
button.button.Enabled = true;
button.label.Visible = false;
}
}
}
public class MyButton
{
public static List<MyButton> buttons { get; set; }
public Button button { get; set; }
public Label label { get; set; }
}
}

Microsoft VSrollBar behavior or bug with touch screen - windows forms

I found a strange behavior with VScrollBar (vertical scrollbar available in Visual Studio tool box). The problem is "if I swipe down on the scrollbar, it moves up. If I swipe up, it moves down".
Steps to replicate Bug or behavior - 1
1) Add VScrollBar as a child to any user control.
2) Swipe up or down on the user control (not on scrollbar). Vertical scrollbar moves in opposite direction even if there isn't any programmatical connection between content and VScrollBar
Steps to replicate Bug or behavior - 2
1) Add VScrollBar as a child to any user control.
2) Swipe on scrollbar, it will move up during swipe up and down during swipe down (correct behavior)
3) Swipe up or down on the user control. Vertical scrollbar moves in opposite direction
4) Now swipe up or down on the vertical scrollbar. Vertical scrollbar starts moving in opposite direction (Buggy behavior, happens only after bug no: 1)
Simple control with vertical scrollbar to replicate this behavior
public class QuickViewer : Control
{
public QuickViewer()
{
// Designer generated code
// Copy pasted for illustration alone
this.vScrollBar1 = new System.Windows.Forms.VScrollBar();
this.SuspendLayout();
//
// vScrollBar1
//
this.vScrollBar1.Location = new System.Drawing.Point(420, 4);
this.vScrollBar1.Name = "vScrollBar1";
this.vScrollBar1.Size = new Size(this.vScrollBar1.Width, 292);
//
// QuickViewer
//
this.Controls.Add(this.vScrollBar1);
this.Name = "QuickViewer";
this.Size = new System.Drawing.Size(441, 296);
this.vScrollBar1.Value = 5;
this.ResumeLayout(false);
}
protected override void OnPaint(PaintEventArgs e)
{
//My actual control is different. I prepared a simple control to replicate the buggy behavior of VScrollBar
//Control border
Pen borderPen = new Pen(Color.LawnGreen, 5);
e.Graphics.DrawRectangle(borderPen, ClientRectangle);
borderPen.Dispose();
//View area
Rectangle rect = new Rectangle(ClientRectangle.Location, ClientRectangle.Size);
rect.Inflate(-25, -10);
e.Graphics.FillRectangle(Brushes.White, rect);
e.Graphics.DrawRectangle(Pens.Black, rect);
this.Font = new System.Drawing.Font("Segoe UI", 12, FontStyle.Bold);
StringFormat format = new StringFormat() { Alignment = StringAlignment.Center };
e.Graphics.DrawString("Quick viewer", this.Font, Brushes.Black, rect, format);
string content = "This is a control created to illustrate the bug in VScrollBar." +
"\n Control area refers to the area with white background" +
"\n Control and Vertical Scrollbar are not programatically connected with each other."
+ "But still VScrollBar moves if you swipe on control area";
Font font = new System.Drawing.Font("Segoe UI", 12, FontStyle.Italic);
rect.Y += 20;
e.Graphics.DrawString(content, font, Brushes.Black, rect, format);
font.Dispose();
format.Dispose();
base.OnPaint(e);
}
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
private System.Windows.Forms.VScrollBar vScrollBar1;
}
Question:
Is there any way to overcome this behavior or bug ? I want the scrollbar to move down while swiping down and move up while swiping up. There should not be any scrolling when swiping over the content

I want the scrollbar to move down while swiping down and move up while swiping up.
As per Hans Passants comment its just a system setting (in the form of a registry key):
The answer is actually over at SuperUser:
https://superuser.com/questions/310681/inverting-direction-of-mouse-scroll-wheel
In C# as you wanted:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Microsoft.Win32;
using System.Diagnostics;
using System.Security.Principal;
namespace WindowsFormsApplication1 {
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
}
private Flippable[] flippable;
private void Form1_Load(object sender, EventArgs e) {
WindowsPrincipal pricipal = new WindowsPrincipal(WindowsIdentity.GetCurrent());
bool hasAdministrativeRight = pricipal.IsInRole(WindowsBuiltInRole.Administrator);
if (!hasAdministrativeRight) {
RunElevated(Application.ExecutablePath);
this.Close();
Application.Exit();
}
//probably only want to flip mice.
flippable = getFlippable("hid.mousedevice");
dgv_flippable.DataSource = flippable;
foreach (var col in dgv_flippable.Columns.OfType<DataGridViewCheckBoxColumn>()) {
col.TrueValue = true;
col.FalseValue = false;
col.IndeterminateValue = null;
}
}
private static bool RunElevated(string fileName)
{
//MessageBox.Show("Run: " + fileName);
ProcessStartInfo processInfo = new ProcessStartInfo();
processInfo.UseShellExecute = true;
processInfo.Verb = "runas";
processInfo.FileName = fileName;
try
{
Process.Start(processInfo);
return true;
}
catch (Win32Exception)
{
//Do nothing. Probably the user canceled the UAC window
}
return false;
}
private Flippable[] getFlippable(string filter) {
List<Flippable> flips = new List<Flippable>();
using (RegistryKey hid = Registry.LocalMachine.OpenSubKey(#"SYSTEM\CurrentControlSet\Enum\HID\",false)) {
foreach (string devicekn in hid.GetSubKeyNames()) {
using (RegistryKey device = hid.OpenSubKey(devicekn,false)) {
foreach (string devicekn2 in device.GetSubKeyNames()) {
using (RegistryKey device2 = device.OpenSubKey(devicekn2,false)) {
using (RegistryKey devparam = device2.OpenSubKey("Device Parameters",true)) {
if (devparam != null) {
flips.Add(new Flippable(new string[] { devicekn, devicekn2 }, device2, devparam, tmr_popup));
}
}
}
}
}
}
}
if (filter != null) {
return flips.Where(f=>f.name.Contains(filter)).ToArray();
}
return flips.ToArray();
}
private void dgv_flippable_MouseUp(object sender, MouseEventArgs e) {
dgv_flippable.EndEdit();
}
private void button1_Click(object sender, EventArgs e) {
flippable = getFlippable(null);
dgv_flippable.DataSource = flippable;
}
private void btn_flip_Click(object sender, EventArgs e) {
foreach (var f in flippable) {
f.vertical = true;
f.horizontal = true;
}
dgv_flippable.DataSource = null;
dgv_flippable.DataSource = flippable;
}
private void btn_normal_Click(object sender, EventArgs e) {
foreach (var f in flippable) {
f.vertical = false;
f.horizontal = false;
}
dgv_flippable.DataSource = null;
dgv_flippable.DataSource = flippable;
}
private void tmr_popup_Tick(object sender, EventArgs e) {
tmr_popup.Enabled = false;
notifyIcon1.ShowBalloonTip(99999999);
}
}
public class Flippable {
public Flippable(string[] keyPath, RegistryKey deviceKey, RegistryKey devparam, Timer timer) {
this._keyPath = keyPath;
IEnumerable<bool?> flipValues = Flippable.valueNames
.Select(v => onlyIntBool(devparam.GetValue(v, null)));
this.name = (string)deviceKey.GetValue("DeviceDesc");
this._vertical = flipValues.ElementAt(0);
this._horizontal = flipValues.ElementAt(1);
this._timer = timer;
}
private bool? onlyIntBool(object value) {
try {
return value == null ? null : (bool?)(((int)value) != 0);
} catch {
return null;
}
}
public static string[] valueNames = new string[] { "FlipFlopWheel", "FlipFlopHScroll" };
public string name { get; private set; }
private string[] _keyPath;
private bool? _vertical;
private bool? _horizontal;
Timer _timer;
public bool? vertical { set { flip(Flippable.valueNames[0], value); _vertical = value; } get { return _vertical; } }
public bool? horizontal { set { flip(Flippable.valueNames[1], value); _horizontal = value; } get { return _horizontal; } }
public void flip(string valueName, bool? value) {
using (RegistryKey hid = Registry.LocalMachine.OpenSubKey(#"SYSTEM\CurrentControlSet\Enum\HID\", false)) {
using (RegistryKey device = hid.OpenSubKey(_keyPath[0], false)) {
using (RegistryKey device2 = device.OpenSubKey(_keyPath[1], false)) {
using (RegistryKey devparam = device2.OpenSubKey("Device Parameters", true)) {
if (value == null) {
devparam.DeleteValue(valueName);
} else {
devparam.SetValue(valueName, value == true ? 1 : 0);
_timer.Enabled = true;
}
}
}
}
}
}
}
}
REF: https://github.com/jamie-pate/flipflop-windows-wheel/blob/master/Form1.cs
Disclaimer: normally this question would get closed as a duplicate but because there is a bounty on it and the duplicate is over at SuperUser I've chosen to share that answer here. Full credit to the original author: https://superuser.com/users/108033/richard and https://superuser.com/users/132069/jamie-pate

I think what you want is a ViewPort.
Essentially you put a Control inside a PictureBox. The Control has a larger height than the PictureBox making it a ViewPort.
Before
You'll need to change the form designer code to get the control inside the PictureBox:
'
'PictureBox1
'
Me.PictureBox1.Location = New System.Drawing.Point(96, 87)
Me.PictureBox1.Name = "PictureBox1"
Me.PictureBox1.Size = New System.Drawing.Size(231, 195)
Me.PictureBox1.TabIndex = 0
Me.PictureBox1.TabStop = False
'
'VScrollBar1
'
Me.VScrollBar1.Location = New System.Drawing.Point(330, 88)
Me.VScrollBar1.Name = "VScrollBar1"
Me.VScrollBar1.Size = New System.Drawing.Size(34, 194)
Me.VScrollBar1.TabIndex = 2
'
'TextBox1
'
Me.TextBox1.Location = New System.Drawing.Point(0, 0)
Me.TextBox1.Multiline = True
Me.TextBox1.Name = "TextBox1"
Me.TextBox1.Size = New System.Drawing.Size(211, 251)
Me.TextBox1.TabIndex = 3
'
'Form1
'
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(522, 392)
Me.Controls.Add(Me.VScrollBar1)
Me.Controls.Add(Me.PictureBox1)
'======= THIS IS THE CRITICAL CHANGE =======
PictureBox1.Controls.Add(Me.TextBox1)
After
Then manually place a ScrollBar to the right of the PictureBox and facilitate the behaviour yourself, eg:
//set the VScroll the difference
VScroll.Max = Textbox.Height - PictureBox.Height;
In the VScroll event:
TextBox.Top = -VScroll.Value;
This will save you from mucking around with system settings in order to produce a QuickViewer custom control.
You can add smarts to it like programming PictureBox drag events to set the ScrollBar (and subsequently the inside controls Top). For most inside controls you'll just need to work out the Height which is easy using a for loop, eg:
foreach(var ctrl in PictureBox.Controls) {
// tally up the controls height
...
For inside Textbox controls you can work out the Height based on Fontsize and number of lines. There are plenty of examples online showing how to do that. Since you're doing Textbox's with graphics, eg e.Graphics.DrawString it should be easy enough having the inside control as a innerPictureBox.
To swap the scroll/swipe direction set the VScroll default starting Value to its Max value and set the inside controls Top = VScroll.Value (no minus sign needed)

Referencing a newly created control

If i create a control on the fly, as below
private void button10_Click(object sender, EventArgs e)
{
CheckedListBox CheckedListBox1 = new CheckedListBox();
CheckedListBox1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(224)), ((System.Byte)(192)));
CheckedListBox1.ItemHeight = 16;
CheckedListBox1.Location = new System.Drawing.Point(12, 313);
CheckedListBox1.Name = "CheckedListBox1";
CheckedListBox1.Size = new System.Drawing.Size(168, 244);
CheckedListBox1.TabIndex = 0;
Controls.Add(CheckedListBox1);
Button button12 = new Button();
button12.Location = new Point(900, 500);
button12.Size = new Size(75, 23);
button12.Click += new System.EventHandler(button12_Click);
button12.Name = "button12";
button12.Text = "Toggle All";
Controls.Add(button12);
}
what is the best way to reference that control from a function outside of the local scope? would it be best creating a static class to somehow hold a reference to the control that can be accessed outside the local scope or is there a findcontrol function for winforms ( i think findcontrol is just for web).
i want
private void button12_Click(object sender, EventArgs e)
{
for (int i = 0; i <= (CheckedListBox1.Items.Count - 1); i++)
{
if (CheckedListBox1.GetItemCheckState(i) == CheckState.Checked)
{
CheckedListBox1.SetItemCheckState(i, CheckState.Indeterminate);
}
else if (CheckedListBox1.GetItemCheckState(i) == CheckState.Indeterminate)
{
CheckedListBox1.SetItemCheckState(i, CheckState.Checked);
}
}
}
to be able to work but im going wrong because of scope? pls help a newbie
thanks

I'm assuming the two functions button12_Click and button10_Click are members of a From class. In this case, your should make your CheckListBox1 and button12 members of the From class. That way, the button12_Click will be able to reference the controls you will have created.
public partial class Form1 : Form
{
CheckedListBox CheckedListBox1 = null;
Button button12 = null;
private void button10_Click(object sender, EventArgs e)
{
CheckedListBox1 = new CheckedListBox();
CheckedListBox1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(224)), ((System.Byte)(192)));
CheckedListBox1.ItemHeight = 16;
CheckedListBox1.Location = new System.Drawing.Point(12, 313);
CheckedListBox1.Name = "CheckedListBox1";
CheckedListBox1.Size = new System.Drawing.Size(168, 244);
CheckedListBox1.TabIndex = 0;
Controls.Add(CheckedListBox1);
button12 = new Button();
button12.Location = new Point(900, 500);
button12.Size = new Size(75, 23);
button12.Click += new System.EventHandler(button12_Click);
button12.Name = "button12";
button12.Text = "Toggle All";
Controls.Add(button12);
}
private void button12_Click(object sender, EventArgs e)
{
for (int i = 0; i <= (CheckedListBox1.Items.Count - 1); i++)
{
if (CheckedListBox1.GetItemCheckState(i) == CheckState.Checked)
{
CheckedListBox1.SetItemCheckState(i, CheckState.Indeterminate);
}
else if (CheckedListBox1.GetItemCheckState(i) == CheckState.Indeterminate)
{
CheckedListBox1.SetItemCheckState(i, CheckState.Checked);
}
}
}
}

When there is only one CheckedListBox make it a class variable. But when you have always only one CheckedListBox - why do you create it dynamically?

If you're adding the controls to the page's Controls collection, just go look there. If you know the index of the control you can reference it that way. if you're adding the control to some container's Control's collection (say, a panel), look for it there