ConvertTo() [1/2]

override? object System.Drawing.ColorConverter.ConvertTo ( ITypeDescriptorContext? context, CultureInfo? culture, object? value, Type destinationType )

inlinevirtual

Reimplemented from System.ComponentModel.TypeConverter.

Definition at line 53 of file ColorConverter.cs.

    {
        if (destinationType == null)
        {
            throw new ArgumentNullException("destinationType");
        }
        if (value is Color color)
        {
            if (destinationType == typeof(string))
            {
                if (color == Color.Empty)
                {
                    return string.Empty;
                }
                if (System.Drawing.ColorTable.IsKnownNamedColor(color.Name))
                {
                    return color.Name;
                }
                if (color.IsNamedColor)
                {
                    return "'" + color.Name + "'";
                }
                if (culture == null)
                {
                    culture = CultureInfo.CurrentCulture;
                }
                string separator = culture.TextInfo.ListSeparator + " ";
                TypeConverter converterTrimUnsafe = TypeDescriptor.GetConverterTrimUnsafe(typeof(int));
                int num = 0;
                string[] array;
                if (color.A < byte.MaxValue)
                {
                    array = new string[4];
                    array[num++] = converterTrimUnsafe.ConvertToString(context, culture, color.A);
                }
                else
                {
                    array = new string[3];
                }
                array[num++] = converterTrimUnsafe.ConvertToString(context, culture, color.R);
                array[num++] = converterTrimUnsafe.ConvertToString(context, culture, color.G);
                array[num++] = converterTrimUnsafe.ConvertToString(context, culture, color.B);
                return string.Join(separator, array);
            }
            if (destinationType == typeof(InstanceDescriptor))
            {
                MemberInfo memberInfo = null;
                object[] arguments = null;
                if (color.IsEmpty)
                {
                    memberInfo = typeof(Color).GetField("Empty");
                }
                else if (System.Drawing.ColorTable.IsKnownNamedColor(color.Name))
                {
                    memberInfo = typeof(Color).GetProperty(color.Name) ?? typeof(SystemColors).GetProperty(color.Name);
                }
                else if (color.A != byte.MaxValue)
                {
                    memberInfo = typeof(Color).GetMethod("FromArgb", new Type[4]
                    {
                        typeof(int),
                        typeof(int),
                        typeof(int),
                        typeof(int)
                    });
                    arguments = new object[4] { color.A, color.R, color.G, color.B };
                }
                else if (color.IsNamedColor)
                {
                    memberInfo = typeof(Color).GetMethod("FromName", new Type[1] { typeof(string) });
                    arguments = new object[1] { color.Name };
                }
                else
                {
                    memberInfo = typeof(Color).GetMethod("FromArgb", new Type[3]
                    {
                        typeof(int),
                        typeof(int),
                        typeof(int)
                    });
                    arguments = new object[3] { color.R, color.G, color.B };
                }
                if (memberInfo != null)
                {
                    return new InstanceDescriptor(memberInfo, arguments);
                }
                return null;
            }
        }
        return base.ConvertTo(context, culture, value, destinationType);
    }

References System.array, System.culture, System.Globalization.CultureInfo.CurrentCulture, System.Drawing.Color.Empty, System.ComponentModel.TypeDescriptor.GetConverterTrimUnsafe(), System.Drawing.ColorTable.IsKnownNamedColor(), and System.value.