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path: root/Xamarin.Forms.Core/ThicknessTypeConverter.cs
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using System;
using System.Globalization;

namespace Xamarin.Forms
{
	public class ThicknessTypeConverter : TypeConverter
	{
		public override object ConvertFromInvariantString(string value)
		{
			if (value != null)
			{
				double l, t, r, b;
				string[] thickness = value.Split(',');
				switch (thickness.Length)
				{
					case 1:
						if (double.TryParse(thickness[0], NumberStyles.Number, CultureInfo.InvariantCulture, out l))
							return new Thickness(l);
						break;
					case 2:
						if (double.TryParse(thickness[0], NumberStyles.Number, CultureInfo.InvariantCulture, out l) && double.TryParse(thickness[1], NumberStyles.Number, CultureInfo.InvariantCulture, out t))
							return new Thickness(l, t);
						break;
					case 4:
						if (double.TryParse(thickness[0], NumberStyles.Number, CultureInfo.InvariantCulture, out l) && double.TryParse(thickness[1], NumberStyles.Number, CultureInfo.InvariantCulture, out t) &&
							double.TryParse(thickness[2], NumberStyles.Number, CultureInfo.InvariantCulture, out r) && double.TryParse(thickness[3], NumberStyles.Number, CultureInfo.InvariantCulture, out b))
							return new Thickness(l, t, r, b);
						break;
				}
			}

			throw new InvalidOperationException(string.Format("Cannot convert \"{0}\" into {1}", value, typeof(Thickness)));
		}
	}
}