Using Oxyplot in my dictionary, I want my user to have the option to choose colors. To fill the corresponding combobox with all Oxycolors I have the following function:
...
public Dictionary<string, OxyColor> AllOxyColors { get; set; }
...
/// <summary>
/// Creates a Dictionary from the fields of the OxyColorsclass
/// </summary>
private void InitializeAllOxyColors()
{
var colorsValues = typeof(OxyColors)
.GetFields(BindingFlags.Static | BindingFlags.Public)
.Where(f => f.FieldType == typeof(OxyColor))
.Select(f => f.GetValue(null))
.Cast<OxyColor>()
.ToList();
var colorsNames = typeof(OxyColors)
.GetFields(BindingFlags.Static | BindingFlags.Public)
.Where(f => f.FieldType == typeof(OxyColor))
.Select(f => f.Name)
.Cast<string>()
.ToList();
AllOxyColors = colorsNames.Zip(colorsValues, (k, v) => new { k, v }).ToDictionary(x => x.k, x => x.v);
AllOxyColors.Remove("Undefined");
AllOxyColors.Remove("Automatic");
// Manually added colors for colorblind colleagues
AllOxyColors.Add("#DE1C1C", OxyColor.Parse("#DE1C1C"));
AllOxyColors.Add("#13EC16", OxyColor.Parse("#13EC16"));
AllOxyColors.Add("#038BFF", OxyColor.Parse("#038BFF"));
// ordering doesn't seem do anything on the dictionary here:
//AllOxyColors.OrderBy(c => c.Key);
}
As you can see there is a section where I manually add three colors, that where requested by color blind colleagues. The problem is, that for some reason, the first two colors are added to the top of the list, the third color is added at the end of the list. Using OrderBy() also doesn't seem to have any effect on the dictionary.
What is the reason for this behavior?
OrderBy returns IOrderedEnumerable<TSource> it won't sort your existing dictionary, so you have to do something like
AllOxyColors = AllOxyColors.OrderBy(x => x.Key).ToDictionary(pair => pair.Key, pair => pair.Value);