Re: how to change the colour of buttons through timer in c# window application - C# Discussion Boards

how to change the colour of buttons through timer in c# window application

11-Feb-11 22:22

Reported as spam in sugs&bugs: he posted the same in the Java forum as well...

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aeman11-Feb-11 20:22

Re: how to change the colour of buttons through timer in c# window application

11-Feb-11 20:22

I am working in c# i want to apply the timer on the buttons or want to change their colour randomly from green to red after certain time.I dont want all the buttons to change the color from green to red at the same time i.e if there are three buttons then then they can change colour from green to red at different time periods. Is there any function to do this???

DaveyM6911-Feb-11 22:11

Re: how to change the colour of buttons through timer in c# window application

11-Feb-11 22:11

Subclass Button and wrap a Timer exposing the properties and methods of it that you need.
Something like this - just set ColorA, ColorB and Interval then call Start.

using System;
using System.Drawing;
using System.Windows.Forms;

public class ColoredButton : Button
{
    public static readonly Color DefaultColorA = Color.Red;
    public static readonly Color DefaultColorB = Color.Green;
    public const int DefaultInterval = 1000;

    public event EventHandler Tick;

    private Color colorA;
    private Color colorB;
    private Timer timer;

    public ColoredButton()
    {
        colorA = DefaultColorA;
        colorB = DefaultColorB;
        BackColor = colorA;
        timer = new Timer();
        timer.Interval = DefaultInterval;
        timer.Tick += TimerTick;
    }

    public Color ColorA
    {
        get { return colorA; }
        set { colorA = value; }
    }
    public Color ColorB
    {
        get { return colorB; }
        set { colorB = value; }
    }
    public int Interval
    {
        get
        {
            if (timer != null)
                return timer.Interval;
            else
                return DefaultInterval;
        }
        set
        {
            if (timer != null)
                timer.Interval = value;
        }
    }

    protected override void Dispose(bool disposing)
    {
        if (disposing && timer != null)
        {
            timer.Dispose();
            timer = null;
        }
        base.Dispose(disposing);
    }
    protected virtual void OnTick(EventArgs e)
    {
        EventHandler eh = Tick;
        if (eh != null)
            eh(this, e);
    }
    public void Start()
    {
        if (timer != null)
            timer.Start();
    }
    public void Stop()
    {
        if (timer != null)
            timer.Stop();
    }
    private void TimerTick(object sender, EventArgs e)
    {
        if (BackColor == colorA)
            BackColor = colorB;
        else
            BackColor = colorA;
        OnTick(EventArgs.Empty);
    }
}

Dave

Binging is like googling, it just feels dirtier.
Please take your VB.NET out of our nice case sensitive forum.
Astonish us. Be exceptional. (Pete O'Hanlon)

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aeman11-Feb-11 22:34

Re: how to change the colour of buttons through timer in c# window application

11-Feb-11 22:34

Thanks. But where should i put this code. i have a form and have placed button on it. So i want that whenever i run the program this code should work

DaveyM6911-Feb-11 23:04

Re: how to change the colour of buttons through timer in c# window application

11-Feb-11 23:04

You would create a new class called ColoredButton and place this code in there.
Build the application, then replace the buttons with these - a ColoredButton control will have appear in the toolbox.

aeman12-Feb-11 0:08

Re: how to change the colour of buttons through timer in c# window application

12-Feb-11 0:08

I have creadted a class and when build its giving errors
Here is the code

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Windows.Forms;

namespace ClassLibrary1
{
public class ColoredButton 
    {
        public static readonly Color DefaultColorA = Color.Red;
        public static readonly Color DefaultColorB = Color.Green;
        public const int DefaultInterval = 1000;

        public event EventHandler Tick;

        private Color colorA;
        private Color colorB;
        private Timer timer;

        public ColoredButton()
        {
            colorA = DefaultColorA;
            colorB = DefaultColorB;
            BackColor = colorA;
            timer = new Timer();
            timer.Interval = DefaultInterval;
            timer.Tick += TimerTick;
        }

        public Color ColorA
        {
            get { return colorA; }
            set { colorA = value; }
        }
        public Color ColorB
        {
            get { return colorB; }
            set { colorB = value; }
        }
        public int Interval
        {
            get
            {
                if (timer != null)
                    return timer.Interval;
                else
                    return DefaultInterval;
            }
            set
            {
                if (timer != null)
                    timer.Interval = value;
            }
        }

        protected override void Dispose(bool disposing)
        {
            if (disposing && timer != null)
            {
                timer.Dispose();
                timer = null;
            }
            base.Dispose(disposing);
        }
        protected virtual void OnTick(EventArgs e)
        {
            EventHandler eh = Tick;
            if (eh != null)
                eh(this, e);
        }
        public void Start()
        {
            if (timer != null)
                timer.Start();
        }
        public void Stop()
        {
            if (timer != null)
                timer.Stop();
        }
        private void TimerTick(object sender, EventArgs e)
        {
            if (BackColor == colorA)
                BackColor = colorB;
            else
                BackColor = colorA;
            OnTick(EventArgs.Empty);
        }
    }
}

Errors:

Error 1 The type or namespace name 'Drawing' does not exist in the namespace 'System' (are you missing an assembly reference?) C:\Documents and Settings\XPPRESP3\Local Settings\Application Data\Temporary Projects\ClassLibrary1\ColoredButton.cs 4 14 ClassLibrary1

Error 2 The type or namespace name 'Windows' does not exist in the namespace 'System' (are you missing an assembly reference?) C:\Documents and Settings\XPPRESP3\Local Settings\Application Data\Temporary Projects\ClassLibrary1\ColoredButton.cs 5 14 ClassLibrary1

Error 3 The type or namespace name 'Color' could not be found (are you missing a using directive or an assembly reference?) C:\Documents and Settings\XPPRESP3\Local Settings\Application Data\Temporary Projects\ClassLibrary1\ColoredButton.cs 15 32 ClassLibrary1

DaveyM6912-Feb-11 0:20

Re: how to change the colour of buttons through timer in c# window application

12-Feb-11 0:20

The errors give you the answer!

In your ClassLibrary1 project, in Solution Explorer, right click on References, choose Add Reference and under the .NET tab click System.Drawing and click OK. Repeat for System.Windows.Forms.

There is no need to post the same reply twice by the way D'Oh! | :doh:

aeman12-Feb-11 1:02

Re: how to change the colour of buttons through timer in c# window application

12-Feb-11 1:02

Thanks a lot. A class has been successfully created but when i create a from and the colored button control does not appear in the tool box.

aeman12-Feb-11 0:06

how to insert values in text box at run time in c# and assign it to int

12-Feb-11 0:06

I have created the class but its giving me errors when i build the application:
here is the code

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Windows.Forms;

namespace ClassLibrary1
{
public class ColoredButton 
    {
        public static readonly Color DefaultColorA = Color.Red;
        public static readonly Color DefaultColorB = Color.Green;
        public const int DefaultInterval = 1000;

        public event EventHandler Tick;

        private Color colorA;
        private Color colorB;
        private Timer timer;

        public ColoredButton()
        {
            colorA = DefaultColorA;
            colorB = DefaultColorB;
            BackColor = colorA;
            timer = new Timer();
            timer.Interval = DefaultInterval;
            timer.Tick += TimerTick;
        }

        public Color ColorA
        {
            get { return colorA; }
            set { colorA = value; }
        }
        public Color ColorB
        {
            get { return colorB; }
            set { colorB = value; }
        }
        public int Interval
        {
            get
            {
                if (timer != null)
                    return timer.Interval;
                else
                    return DefaultInterval;
            }
            set
            {
                if (timer != null)
                    timer.Interval = value;
            }
        }

        protected override void Dispose(bool disposing)
        {
            if (disposing && timer != null)
            {
                timer.Dispose();
                timer = null;
            }
            base.Dispose(disposing);
        }
        protected virtual void OnTick(EventArgs e)
        {
            EventHandler eh = Tick;
            if (eh != null)
                eh(this, e);
        }
        public void Start()
        {
            if (timer != null)
                timer.Start();
        }
        public void Stop()
        {
            if (timer != null)
                timer.Stop();
        }
        private void TimerTick(object sender, EventArgs e)
        {
            if (BackColor == colorA)
                BackColor = colorB;
            else
                BackColor = colorA;
            OnTick(EventArgs.Empty);
        }
    }
}

Errors:

The type or namespace name 'Color' could not be found (are you missing a using directive or an assembly reference?) C:\Documents and Settings\XPPRESP3\Local Settings\Application Data\Temporary Projects\ClassLibrary1\ColoredButton.cs 40 16 ClassLibrary1

Error 1 The type or namespace name 'Drawing' does not exist in the namespace 'System' (are you missing an assembly reference?) C:\Documents and Settings\XPPRESP3\Local Settings\Application Data\Temporary Projects\ClassLibrary1\ColoredButton.cs 4 14 ClassLibrary1

aeman11-Feb-11 19:16

Re: how to insert values in text box at run time in c# and assign it to int

11-Feb-11 19:16

i m working in c#.How to insert values in text box at run time in window application and compare it with the int.can any one tell me.any help will be appreciated.
Thamks

OriginalGriff11-Feb-11 20:23

Re: how to insert values in text box at run time in c# and assign it to int

11-Feb-11 20:23

Your question isn't 100% clear: are you asking how to move values from a number (say an int) to a TextBox, and then back from a TextBox to a number again?

If so, then:

int i = 12;
double d = 12.776;
textBoxIntegerValue.Text = i.ToString();
textBoxDoubleValue.Text = d.ToString();

You can apply formatting information in the ToString method if you need to. See MSDN[^] for more info.

To go back to a number:

int i;
double d;
i = int.Parse(textBoxIntegerValue.Text);
d = double.Parse(textBoxDoubleValue.Text);

aeman11-Feb-11 21:08

Re: how to insert values in text box at run time in c# and assign it to int

11-Feb-11 21:08

Thanx.But i want that how to insert values at run time in text box after debugging the program not defining a variable and inserting values in text box.Is there any function??

Anubhava Dimri11-Feb-11 21:19

Anubhava Dimri

11-Feb-11 21:19

First Ur question is not appropriate

For Inserting Values into the textbox is Textbox.Text

If you can think then I Can.

Re: how to insert values in text box at run time in c# and assign it to int

aeman11-Feb-11 21:36

Re: how to insert values in text box at run time in c# and assign it to int

11-Feb-11 21:36

But i want to put the values in text box after running the program.Whenever i run the program i can put any value in text box that should be assigned to any other variable.I donont want to assign the values to text box as:
Textbox.text="good";

Not like this but to insert values at run time and convert it to int and assign it to any variable,

Anubhava Dimri11-Feb-11 21:44

Anubhava Dimri

11-Feb-11 21:44

if u want to assign value in textbox then use Textbox.Text
but if you want to assign value in variable then use String s = textbox.text

if u want to convert value from string to int then use Int32.Parse("string value")

Best Regard

If you can think then I Can.

Re: how to insert values in text box at run time in c# and assign it to int

OriginalGriff11-Feb-11 21:26

Re: how to insert values in text box at run time in c# and assign it to int

11-Feb-11 21:26

Sorry, but that doesn't make a lot of sense to me - it is probably a language translation problem.
Could you try to explain in more detail?

Try breaking it up into stages:
"I have a TextBox on my form called textBox1"
"I want to put a value into textBox1 so I can read it"
"I want to get the value from..."

And so on?

aeman11-Feb-11 21:33

Re: how to insert values in text box at run time in c# and assign it to int

11-Feb-11 21:33

Actaully i have put text box on form in window application. Now what i want to do that whenever program is run i can give any value in the text box.The value that i insert that time in the text box after running the program should be assigned to int. I donont want to assign the values to text box as:
Textbox.text="good";

Not like this but to insert values at run time and convert it to int and assign it to any variable,

OriginalGriff11-Feb-11 21:45

Re: how to insert values in text box at run time in c# and assign it to int

11-Feb-11 21:45

Ah! I think you mean:
"I want to let the user type a value into the text box, and then convert it to a number in a variable in my program"

You can convert the TextBox content to a number at any time:

int i = int.Parse(textBox1.Text);

Will convert the content to an integer and store it in the variable i.

Why is this causing a problem? What do I still not understand about your problem?

DaveyM6911-Feb-11 22:15

Re: how to insert values in text box at run time in c# and assign it to int

11-Feb-11 22:15

Do you mean you want your code to place a random number in the text box?

aeman11-Feb-11 22:39