Convert System.Drawing.Color to Rgb and Hex Value

How to create a System.Drawing.Color from its hexadecimal RGB string?

ColorTranslator.FromHtml("#FF00FF");

Convert System.Drawing.Color to RGB and Hex Value

I'm failing to see the problem here. The code looks good to me.

The only thing I can think of is that the try/catch blocks are redundant -- Color is a struct and R, G, and B are bytes, so c can't be null and c.R.ToString(), c.G.ToString(), and c.B.ToString() can't actually fail (the only way I can see them failing is with a NullReferenceException, and none of them can actually be null).

You could clean the whole thing up using the following:

private static String HexConverter(System.Drawing.Color c)
{
    return "#" + c.R.ToString("X2") + c.G.ToString("X2") + c.B.ToString("X2");
}

private static String RGBConverter(System.Drawing.Color c)
{
    return "RGB(" + c.R.ToString() + "," + c.G.ToString() + "," + c.B.ToString() + ")";
}

How to convert Hexadecimal #FFFFFF to System.Drawing.Color

string hex = "#FFFFFF";
Color _color = System.Drawing.ColorTranslator.FromHtml(hex);

Note: the hash is important!

Get System.Drawing.Color value as ARGB Hex code

The ARGB Hex code may be obtained from the Name property for known colors by converting it to ARGB and back to System.Drawing.Color struct:

using System.Drawing;

var color = Color.Red;
color = Color.FromArgb(color.ToArgb());
Console.WriteLine(color.Name);

output: ffff0000

How do I get the color from a hexadecimal color code using .NET?

I'm assuming that's an ARGB code... Are you referring to System.Drawing.Color or System.Windows.Media.Color? The latter is used in WPF for example. I haven't seen anyone mention it yet, so just in case you were looking for it:

using System.Windows.Media;

Color color = (Color)ColorConverter.ConvertFromString("#FFDFD991");

System.Drawing.Color convert FromArgb issue

Try this

System.Drawing.ColorTranslator.FromHtml("#" + "Hex value").Name

Convert Drawing.Color into HTML color value

You can't return a System.Drawing.Color object from your function because browsers only understand text. So instead, you should return the string representation of the color, be in RGB, HEX format or what have you.

Your method then should look like this:

 protected string GetRandColor()
 {
     return ColorTranslator.ToHtml(Color.Red);
 }

And you can set the background of your form as so:

<body style="background-color:<%=GetRandColor()%>;">

Converting RGB/Brush to Hexadecimal value

Firstly let me point out that, assuming that your sliders' value property returns an int, you're converting an int to a string and then back again. This is not necessary. Instead of

byte r = byte.Parse(sliderRed.Value.ToString());

all you need to do is

byte r = (byte)sliderRed.Value;

This bypasses the string conversion. Converting something to a string and then converting it back from a string to something else is a code smell that should make you stop and think if there isn't a better way.

To turn the colour into its hex code is easy, because you already have the R, G and B values. All you need is:

hexCode.Text = string.Format("#{0:X2}{1:X2}{2:X2}", r, g, b);

Formatting a number with the format string "X2" forces it to render in hexadecimal, with 2 digits. So you just do that for all three next to each other, and stick the hash symbol at the front.

edit

If you're passing colour data around between parts of your code, you should always do that with a System.Drawing.Color object, and then whenever you need to display a hex string, generate that at the time. Don't pass around the hex string and convert it back to a Color when it's needed. Remember how I said converting things to strings and back again was a code smell?

If you find you're doing it a lot then it makes sense to add an extension method to Color so that you can call it easily. Here's a class that implements that method:

static class ColorExtensions
{
    public static string ToHexString(this System.Drawing.Color color)
    {
        return string.Format("#{0:X2}{1:X2}{2:X2}", color.R, color.G, color.B);
    }
}

This will give all Color values a ToHexString() method, which in your code above you could use as follows:

var color = Color.FromArgb(255, r, g, b);
EndColor.Background = new SolidColorBrush(color);
hexcode.Text = color.ToHexString();

Convert System.Drawing.Color to Rgb and Hex Value

How to create a System.Drawing.Color from its hexadecimal RGB string?