public class SubColor
{
public static Color FromArgb(string color) {
int[] a =new int[4];
int[] b =new int[8];
string rg1 = "#[a-fA-F0-9]{8}";
Regex r1 = new Regex(rg1);
if (r1.IsMatch(color))
{
for (int i = 0; i < 8; i++)
{
switch (color.Substring(i + 1, 1))
{
case "a":
case "A": b[i] = 10; break;
case "b":
case "B": b[i] = 11; break;
case "c":
case "C": b[i] = 12; break;
case "d":
case "D": b[i] = 13; break;
case "e":
case "E": b[i] = 14; break;
case "f":
case "F": b[i] = 15; break;
default: b[i] = int.Parse(color.Substring(i + 1, 1)); break;
}
}
}
else
{
string rg2 = @"^[A-Fa-f0-9]{8}";
Regex r2 = new Regex(rg2);
if (r2.IsMatch(color))
{
for (int i = 0; i < 8; i++)
{
switch (color.Substring(i, 1))
{
case "a":
case "A": b[i] = 10; break;
case "b":
case "B": b[i] = 11; break;
case "c":
case "C": b[i] = 12; break;
case "d":
case "D": b[i] = 13; break;
case "e":
case "E": b[i] = 14; break;
case "f":
case "F": b[i] = 15; break;
default: b[i] = int.Parse(color.Substring(i, 1)); break;
}
}
}
}
a[0] = b[0] *16+b[1];
a[1] = b[2] *16+b[3];
a[2] = b[4] *16+b[5];
a[3] = b[6] *16+b[7];
return Color.FromArgb((byte)a[0], (byte)a[1], (byte)a[2], (byte)a[3]);
}
}
这样就可以使用了
testb.Color = SubColor.FromArgb("#FF000000");
teste.Color = SubColor.FromArgb("FFA9CCF2");
本人正则表达式比较烂，还望高人指点