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");

Assuming you mean the HTML type RGB codes (called Hex codes, such as #FFCC66), use the ColorTranslator class:

System.Drawing.Color col = System.Drawing.ColorTranslator.FromHtml("#FFCC66");

If, however you are using an ARGB hex code, you can use the ColorConverter class from the System.Windows.Media namespace:

Color col = ColorConverter.ConvertFromString("#FFDFD991") as Color;//or      = (Color) ColorConverter.ConvertFromString("#FFCC66") ;

If you don't want to use the ColorTranslator, you can do it in easily:

string colorcode = "#FFFFFF00";int argb = Int32.Parse(colorcode.Replace("#", ""), NumberStyles.HexNumber);Color clr = Color.FromArgb(argb);

The colorcode is just the hexadecimal representation of the ARGB value.

EDIT

If you need to use 4 values instead of a single integer, you can use this (combining several comments):

string colorcode = "#FFFFFF00";    colorcode = colorcode.TrimStart('#');Color col; // from System.Drawing or System.Windows.Mediaif (colorcode.Length == 6)    col = Color.FromArgb(255, // hardcoded opaque                int.Parse(colorcode.Substring(0,2), NumberStyles.HexNumber),                int.Parse(colorcode.Substring(2,2), NumberStyles.HexNumber),                int.Parse(colorcode.Substring(4,2), NumberStyles.HexNumber));else // assuming length of 8    col = Color.FromArgb(                int.Parse(colorcode.Substring(0, 2), NumberStyles.HexNumber),                int.Parse(colorcode.Substring(2, 2), NumberStyles.HexNumber),                int.Parse(colorcode.Substring(4, 2), NumberStyles.HexNumber),                int.Parse(colorcode.Substring(6, 2), NumberStyles.HexNumber));

Note 1: NumberStyles is in System.Globalization.
Note 2: please provide your own error checking (colorcode should be a hexadecimal value of either 6 or 8 characters)