Summary
ContentsFor a long time I had a fairly complicated way of converting the .NET Color object to a string such as #F782AB. Since then some of you have informed me of a much easier way. I'll show you the easy way first and then include the longer method below.
Color c = Color.Red;
string strColor = System.Drawing.ColorTranslator.ToHtml(c);
Pretty simple isn't it. Don't you just love these little .NET niceties that you can never find when you want 'em?
So before I figured that out, it worked something like this. Note that lblOutput is a Label control on my ASP.NET page.
Example: How to use the conversion method
Contentspublic void TestColorToHexString()
{
Color c1 = Color.White;
Color c2 = Color.Black;
Color c3 = Color.LightGoldenrodYellow;
Color c4 = Color.Gold;
lblOutput.Text = c1.Name + " = "
+ Snippets00002.ColorToHexString(c1) + "<br>";
lblOutput.Text += c2.Name + " = "
+ Snippets00002.ColorToHexString(c2) + "<br>";
lblOutput.Text += c3.Name + " = "
+ Snippets00002.ColorToHexString(c3) + "<br>";
lblOutput.Text += c4.Name + " = "
+ Snippets00002.ColorToHexString(c4) + "<br>";
}
If you run the previous method you'll get the following output displayed in the Label control on the aspx page.
Example: Output
ContentsWhite = FFFFFF
Black = 000000
LightGoldenrodYellow = FAFAD2
Gold = FFD700
The C# Class:
Contentsnamespace Cambia.CoreLib
{
using System;
using System.Drawing;
/// <summary>
///
/// </summary>
public class Snippets00002
{
#region -- Data Members --
static char[] hexDigits = {
'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
#endregion
public Snippets00002()
{
}
/// <summary>
///
/// </summary>
/// <returns>
public static string ColorToHexString(Color color)
{
byte[] bytes = new byte[3];
bytes[0] = color.R;
bytes[1] = color.G;
bytes[2] = color.B;
char[] chars = new char[bytes.Length * 2];
for (int i = 0; i < bytes.Length; i++)
{
int b = bytes[i];
chars[i * 2] = hexDigits[b >> 4];
chars[i * 2 + 1] = hexDigits[b & 0xF];
}
return new string(chars);
}
}
}