Red-Green light indicators in C# .NET Form

What's the quickest way to show a red/green light indicator on a C# form?

I originally thought about using radio buttons, but not sure how to set the color of the dot, only the foreground/background text.

Then I thought about drawing a circle. Couldn't find a toolbox shape for that, and didn't want to write code just to draw the circle.

Basically, I'm writing a little application specific monit开发者_开发问答or, that shows a red light if certain services are down, or certain web services are not responding.

This is what I have so far using a square button instead of a circle. The code is just what I want, I just want a round shape.

        if (allGood)
        {
            btnIISIndicator.BackColor = Color.Green; 
        }
        else
        {
            btnIISIndicator.BackColor = Color.Red; 
        }

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This is simple, just use System.Windows.Shapes for the object and System.Windows.Media.Brushes for the colors.

For a circle you can do the following:

System.Windows.Shapes.Ellipse circle = new System.Windows.Shapes.Ellipse();
circle.Height = 20; //or some size
circle.Width = 20; //height and width is the same for a circle
circle.Fill = System.Windows.Media.Brushes.Red;

Then you can make a function to do your check for red and green.

Also, you can use hex values for the colors as well:

circle.Fill = new System.Windows.Media.SolidColorBrush((Color)ColorConverter.ConvertFromString("#RRGGBB"));

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Not exactly related to the question at hand, but your code could be shortened somewhat using the ternary operator as such:

btnIISIndicator.BackColor = allGood ? Color.Green : Color.Red;

But that all depends on your (or your organization's) definition of readability and maintainability.

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I would just make a panel or PictureBox and set the Background image to that of a red/green light. Either make the images in PhotoShop/PaintShop/MS Paint or download some stock images off the web.

Whenever the status changes, just swap the image out.

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just try this it works for me.

SolidColorBrush solidColor=new SolidColorBrush();
  solidColor.Color=Colors.Red;
 ellips_circle.Fill=solidColor;

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Use an image, but theres some great icons available here so you dont have to actually make some.

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Create red and green bitmaps and use the PictureBox control to show the bitmaps.

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I just use some standard images and put them in a picturebox. works great on our apps.

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I simply used a non enabled button as indicator since I did not manage to install the WinUI for shapes. Same suggestion as question but simplified.

    indicatorButton.Enabled = false;

    ...

    if (allGood)
    {
        indicatorButton.BackColor = Color.Green;
        indicatorButton.Text = "On";
    }
    else
    {
        indicatorButton.BackColor = Color.Red;
        indicatorButton.Text = "Off";
    }